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Description。The PQ12 series of micro linear actuators are ideal for applications requiring precise positioning and compact size. Weighing in at just 22 grams， the PQ12 is incredibly light as well as compact. The affordably-priced PQ12 is the most powerful actuator of it's size. This is why it has become a popular choice for OEM manufacturers as well as Arduino and RC hobbyists. Some industries where the PQ12 are in use include：prosthetics， robotics， medical， simulation.。The PQ12-R series of linear servos operate as a direct replacement for standard rotary servos. They use the same standard 3 wire connector， ground power and control. Regardless of how you drive your servos， be it with an RC receiver， an Arduino board， or a VEX micro-controller， the PQ12-R servo will function in place of a regular servo， but with the added benefit of providing linear motion. The PQ12-R is available in a 20mm stroke coupled with gear ratio options of 30：1， 63：1 and 100：1 cover a large variety of applications.。The PQ12-100-6-R has：a 100：1 gear ratio for maximum lifting force； 6VDC operating voltage； and a servo(PWM)interface. This powerful little actuator can lift 50N(～5kg)!。The datasheet doesn't mention a minimum operating voltage， but we've tested this actuator at 5VDC and it seems to work just fine. The maximum force and movement speed are reduced of course.。Features。Gearing Option：100：1。Peak Power Point：40N @ 6mm/s。Peak Efficiency Point：20N @ 8mm/s。Max Speed(no load)：10mm/s。Max Force(lifted)：50N。Max Side Load：10N。Back Drive Force：35N。Stroke：20 mm。Input Voltage：6 VDC。Stall Current：550mA @ 6V。Mass：22g。Operating Temperature -10℃ to +50℃。Positional Repeatability：±0.1mm。Mechanical Backlash：0.25 mm。Audible Noise：55dB @ 45cm。Ingress Protection：IP-54。Maximum Duty Cycle：20%。PWM(Servo)signal：Fully retracted：2.0ms @ 50Hz。Fully extended：1.0ms @ 50Hz

Description。The SparkFun Inventor's Kit for micro：bit v2 Lab Pack includes 10 complete micro：bit v2 Inventor's Kits， an SIK Refill Pack and 25 AAA-sized batteries to get your students started in the world of electronics. The SIKs inside the Lab Pack have everything you need， including micro：bit v2s， connector breakouts， breadboards and all the cables and accessories to hook up all the projects listed in our online Experiment Guide.。The kit does not require any soldering and is recommended for all users， from beginners to engineering students. We have provided a complete Experiment Guide in the Documents tab for you to check out now! If you are new to teaching electronics or have taught with the original SparkFun Inventor's Kit and are looking for something new， the SIK for micro：bit v2 is the perfect kit for you!。SparkFun packages everything educators need to get started with this platform in a variety of classroom and makerspace settings with diverse student populations. The hardware boards， cables and extra parts come pre-packaged， and our online support materials --- including an online Experiment Guide(to be updated)--- help you bring the power of the open source community to your classroom. Examples and curriculum materials are available from SparkFun and Arduino， as well as from other educators involved in this growing maker movement.。The micro：bit is a pocket-sized computer that lets you get creative with digital technology. Between the micro：bit and our shield-like bit boards you can do almost anything while coding， customizing and controlling your micro：bit from almost anywhere! You can use your micro：bit for all sorts of unique creations， from robots to musical instruments and more. At half the size of a credit card， this versatile board has vast potential!

。Description。This is SparkFun Beefy 3 FTDI Basic Breakout for the FTDI FT231X USB to serial IC. The pinout of this board matches the FTDI cable to work with official Arduino and cloned 3.3V Arduino boards. It can also be used for general serial applications. Built upon the same foundation as our 3.3V SparkFun FTDI Basic Breakout， the Beefy 3 is equipped with an AP2112K voltage regulator making this FTDI basic breakout board capable of handling a current load of up to 600 mA! With the addition of a more "Beefy" voltage regulator your will now be able to power a 3.3V project directly from the FTDI. The pinout of this board matches the FTDI cable to work with official Arduino and cloned 3.3V Arduino boards.。This board brings out the DTR pin as opposed to the RTS pin of the FTDI cable. The DTR pin allows an Arduino target to auto-reset when a new Sketch is downloaded. This is a really nice feature to have and allows a sketch to be downloaded without having to hit the reset button. This board will auto reset any Arduino board that has the reset pin brought out to a 6-pin connector. The pins labeled BLK and GRN correspond to the colored wires on the FTDI cable. The black wire on the FTDI cable is GND， green is DTR. Use these BLK and GRN pins to align the FTDI basic board with your Arduino target.。There are pros and cons to the FTDI Cable vs the FTDI Basic. This board has TX and RX LEDs that allow you to actually see serial traffic on the LEDs to verify if the board is working， however this board now requires a Micro-B USB cable. The FTDI Cable is well protected against the elements， but is large and cannot be embedded into a project as easily. The FTDI Basic uses DTR to cause a hardware reset where the FTDI cable uses the RTS signal.。This board was designed to decrease the cost of Arduino development and increase ease of use(the auto-reset feature rocks!). Our Arduino Pro and LilyPad boards use this type of connector.

Description。If you're ready to step your Arduino game up from older 8-bit/16MHz microcontrollers， the SparkFun SAMD21 Dev Breakout is a great landing spot. The SparkFun SAMD21 Dev Breakout is an Arduino-sized breakout for the Atmel ATSAMD21G18， a 32-bi

。Description。Arduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements the Processing/Wiring language. Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer(e.g. Flash， Processing， MaxMSP). The open-source IDE can be downloaded for free(currently for Mac OS X， Windows， and Linux).。The Arduino Mega is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins(of which 14 can be used as PWM outputs)， 16 analog inputs， 4 UARTs(hardware serial ports)， a 16 MHz crystal oscillator， a USB connection， a power jack， an ICSP header， and a reset button. It contains everything needed to support the microcontroller； simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.。Never fear for accidental electrical discharge， either since since the Mega also includes a plastic base plate to protect it!。The Mega 2560 R3 also adds SDA and SCL pins next to the AREF.。In addition， there are two new pins placed near the RESET pin. One is the IOREF that allow the shields to adapt to the voltage provided from the board.。The other is a not connected and is reserved for future purposes.。The Mega 2560 R3 works with all existing shields but can adapt to new shields which use these additional pins.。Not sure which Arduino or Arduino-compatible board is right for you? Check out our Arduino Buying Guide!。Features。ATmega2560 microcontroller。Input voltage - 7-12V。54 Digital I/O Pins(14 PWM outputs)。16 Analog Inputs。256k Flash Memory。16Mhz Clock Speed

Description。The RFM69HCW uses an SPI(Serial Peripheral Interface)to communicate with a host microcontroller， and several good Arduino libraries are available. It supports up to 256 networks of 255 nodes per network， features AES encryption to keep y

Description。Introducing the SparkFun FT231X Breakout board， complete with the full UART hardware handshake feature! The pin-out of this board matches the FTDI cable to work with official Arduino and cloned Arduino boards. It can also be used for general serial applications.。This board still brings out the DTR pin as opposed to the RTS pin of the FTDI cable. The DTR pin allows an Arduino target to auto-reset when a new Sketch is downloaded. This is a really nice feature to have and allows a sketch to be downloaded without having to hit the reset button. This board will auto-reset any Arduino board that has the reset pin brought out to a 6-pin connector.。The coolest thing about the FT231X Breakout is that we have broken out ALL the pins for your use， making this board all the more hackable! It also uses a common microUSB jack.。One of the features of this board is a jumper on the back， which allows the VCC output to be configured to either 3.3V or 5V. This board ships default to 5V， but you can cut the default trace and add a solder jumper if you need to switch to 3.3V. It should be noted that the max input of the FT231X is only 3.3V， but it can operate down to 1.8V with external pull-ups and is also 5V tolerant.

。Description。Think of the RedBoard Artemis as just another Arduino... That has BLE. And one megabyte of flash. And runs at less than 1mA. Oh， and it can run TensorFlow models. Ya， that too. The RedBoard Artemis takes the incredibly powerful Artemis module from SparkFun and wraps it up in an easy to use and familiar Uno footprint. We've written an Arduino core from scratch to make programming the Artemis as familiar as。Serial.begin(9600)。. Time-to-first-blink is less than five minutes.。The RedBoard Artemis has the improved power conditioning and USB to serial that we've refined over the years on our RedBoard line of products. A modern USB-C connector makes programming easy. A Qwiic connector makes I2C easy. The RedBoard Artemis is fully compatible with SparkFun's Arduino core and can be programmed easily under the Arduino IDE. We've exposed the JTAG connector for more advanced users who prefer to use the power and speed of professional tools. We've added a digital MEMS microphone for folks wanting to experiment with always-on voice commands with TensorFlow and machine learning. We've even added a convenient jumper to measure current consumption for low power testing.。With 1MB flash and 384k RAM you'll have plenty of room for your sketches. The on-board Artemis module runs at 48MHz with a 96MHz turbo mode available and with Bluetooth to boot!。The SparkFun RedBoard Artemis is a great platform to 'kick the tires' of this amazing module. If you're interesting in testing out the full capabilities of the SparkFun Artemis module or if you're looking for more compact solution， be sure to checkout our ATP and Nano versions of the Artemis line.。Get Started With the SparkFun Artemis RedBoard Guide。Features。Arduino Uno R3 Footprint。1M Flash / 384k RAM。48MHz / 96MHz turbo available。24 GPIO - all interrupt capable。21 PWM channels。Built in BLE radio。10 ADC channels with 14-bit precision。2 UARTs。6 I2C buses。4 SPI buses。PDM Interface。I2S Interface。Qwiic Connector

Description。The SparkFun LTE CAT M1/NB-IoT Shield equips your Arduino or Arduino-compatible microcontroller with access to data networks across the globe. This shield adds wireless， high-bandwidth cellular functionality to your IoT project while maintaining low power consumption and small footprint. The SparkFun LTE CAT M1/NB-IoT Shield is based off the Arduino R3's footprint that allows you to easily incorporate it with favorite Arduino-based device.。At the heart of the LTE Cat M1/NB-IoT shield is u-blox SARA-R410M-02B LTE Cat M1/NB-IoT modem. Cat M1(Category M1)and NB-IoT(Narrowband IoT)are both Low Power Wide Area Network(LPWAN)technologies that are designed to provide cellular communication to small IoT devices. They operate on LTE network bands just like most smartphones， and should be supported by most cellular network carriers. The u-blox SARA-R4 module communicates over UART via simple AT command set. We've provided library to help you get started with everything from sending SMS text messages to communicating with servers over TCP/IP connection. Additionally， both the module and library support an I2C GPS interface via Qwiic connector， so you can plug in u-blox GPS module and start remotely tracking your project.。Each SparkFun LTE CAT M1/NB-IoT Shield also includes ceramic， Molex 1462000001 SMD antenna. The antenna has gain of 3.8dBi around 1.7GHz to 2.7GHz. However， if you would prefer to use an external antenna， we have provided U.FL connector that can be utilized by simply slicing through jumper with hobby knife.。Please be aware that there are few extra parts required to get this shield fully functioning， other than an Arduino-based device. First， you'll need to supply your own SIM card， such as this one from Hologram(we do also offer this shield with an included one as well)and your own headers which will need to be soldered on.。Note：。Be sure to check the。Hardware Overview。section in the Hookup Guide for compatible GPS modules. The onboard Qwiic connector is only designed to support u-blox-based GPS modules. It does not support any other GPS modules or sensors. We are continuing to add more modules so be sure to check back every so often to find out more!。Need custom board?。This component can be found in SparkFun's La Carte board builder. You can have custom design fabricated with this component and your choice of hundreds of other sensors， actuators and wireless devices delivered to you in just few weeks.。Get Started with the SparkFun LTE CAT M1/NB-IoT Shield Guide。Documents。Schematic。Eagle Files。Hookup Guide。Datasheets。SARA-R4。Ceramic Antenna。SARA-R4 AT Command Set。Arduino Library。GitHub

Description。The SparkFun LTE CAT M1/NB-IoT Shield with Hologram SIM Card equips your Arduino or Arduino-compatible microcontroller with access to data networks across the globe without needing to provide your own subscriber identity module. This shield adds wireless， high-bandwidth cellular functionality to your IoT project while maintaining low power consumption and a small footprint. The SparkFun LTE CAT M1/NB-IoT Shield is based off the Arduino R3's footprint that allows you to easily incorporate it with favorite Arduino-based device.。At the heart of the LTE Cat M1/NB-IoT shield is a u-blox SARA-R410M-02B LTE Cat M1/NB-IoT modem. Cat M1(Category M1)and NB-IoT(Narrowband IoT)are both Low Power Wide Area Network(LPWAN)technologies that are designed to provide cellular communication to small IoT devices. They operate on LTE network bands just like most smartphones， and should be supported by most cellular network carriers. The u-blox SARA-R4 module communicates over a UART via a simple AT command set. We've provided a library to help you get started with everything from sending SMS text messages to communicating with servers over a TCP/IP connection. Additionally， both the module and library support an I2C GPS interface via a Qwiic connector， so you can plug in a u-blox GPS module and start remotely tracking your project.。Each SparkFun LTE CAT M1/NB-IoT Shield also includes a ceramic， Molex 1462000001 SMD antenna. The antenna has a gain of 3.8dBi around 1.7GHz to 2.7GHz. However， if you would prefer to use an external antenna， we have provided a U.FL connector that can be utilized by simply slicing through a jumper with a hobby knife.。Please be aware that you will need to supply and solder on your own headers before attaching it to your Arduino based device. Also， if you already have your own SIM， we also offer this shield without a card included.。Note：。Be sure to check the。Hardware Overview。section in the Hookup Guide for compatible GPS modules. The onboard Qwiic connector is only designed to support u-blox-based GPS modules. It does not support any other GPS modules or sensors. We are continuing to add more modules so be sure to check back every so often to find out more!。Get Started with the SparkFun LTE CAT M1/NB-IoT Shield Guide

。Description。The SparkFun ESP8266 Thing Starter Kit is a great place to start learning about the Internet of Things(IoT)! Inside this kit you will find a ESP8266 Thing， a Serial Basic Breakout to program it(and USB cable)， jumper wires， breadboard， LEDs， and plenty of headers. We've also included a pair of stackable 10-pin headers as well as 40 regular headers to connect your Serial Basic Breakout to the Thing or breadboard. If you have ever been interested in learning about IoT， Arduino， and wireless solutions， the SparkFun ESP8266 Thing Starter Kit is a perfect place to start!。The SparkFun ESP8266 Thing is a breakout and development board for the ESP8266 WiFi SoC - a leading platform for Internet of Things(IoT)or WiFi-related projects. The Thing is low-cost and easy to use， and Arduino IDE integration can be achieved in just a few steps. We've made the ESP8266 easy to use by breaking out all of the module's pins， adding a LiPo charger， power supply， and all of the other supporting circuitry it requires.。Why the name? We lovingly call it the "Thing" due to it being the perfect foundation for your Internet of Things project. The Thing does everything from turning on an LED to posting data with datastream， and can be programmed just like any microcontroller. You can even program the Thing through the Arduino IDE by installing the ESP8266 Arduino addon.。Note：You may want to either use a second USB cable to power the board while programming or connect the solder jumper on the back of the board to provide power over the FTDI port.。Get Started with the SparkFun ESP8266 Thing Guide。Features。All module pins broken out。On-board LiPo charger/power supply。802.11 b/g/n。Wi-Fi Direct(P2P)， soft-AP。Integrated TCP/IP protocol stack。Integrated TR switch， balun， LNA， power amplifier and matching network。Integrated PLLs， regulators， DCXO and power management units。Integrated low power 32-bit CPU could be used as application processor。+19.5dBm output power in 802.11b mode

Description。The Elektor MIT App Inventor Bundle is a kit built to help learn about developing apps for Android compatible mobile devices using the MIT App Inventor online development environment. MIT App Inventor projects can be in either standalone mode or use an external processor. In standalone mode， the developed application runs only on the mobile device(e.g. Android). In external processor-based applications， the mobile device communicates with an external microcontroller-based processor， such as Raspberry Pi， Arduino， ESP8266， ESP32， etc.。The kit comes with a book and a selection of parts that correspond with a number of projects. Check out the features and Includes tab for more information.。Features。Projects Include：Using the text-to-speech component。Intonating a received SMS message。Sending SMS messages。Making telephone calls using a contacts list。Using the GPS and Pin-pointing our location on a map。Speech recognition and speech translation to another language。Controlling multiple relays by speech commands。Projects for the Raspberry Pi， ESP32 and Arduino using Bluetooth and Wi-Fi。MIT APP Inventor and Node-RED projects for the Raspberry Pi

Description。The SparkFun MP3 Player Shield is an awesome MP3 decoder with the capabilities of storing music files onto a run-of-the-mill microSD card， thus giving you the ability toadd music or sound effects to any project. With this board you can pull MP3 files from an microSD card and play them using only one shield， effectively turning any Arduino into a fully functional stand-alone MP3 player! The MP3 Shield utilizes the VS1053B MP3 audio decoder IC to decode audio files. The VS1053 is also capable of decoding Ogg Vorbis/MP3/AAC/WMA/MIDI audio and encoding IMA ADPCM and user-loadable Ogg Vorbis.。The VS1053 receives its input bitstream through a serial input bus(SPI). After the stream has been decoded by the IC， the audio is sent out to both a 3.5mm stereo headphone jack， as well as a 2-pin 0.1" pitch header.。This shield comes populated with all components as shown in the images and schematic； but it does not come with headers installed. We recommend the Arduino R3 Stackable Header Kit.。Features。3.5mm audio out jack。0.1" spaced header for speaker out。microSD card slot

。Description。The SparkFun Level Shifting microSD Breakout is quite similar to the SparkFun microSD Transflash Breakout， but with the included level shifting hardware， this board allows you to utilize a microSD card at Arduino's SD library's top speed on a 5V system. With this small breakout board， that is not much bigger than your fingernail， adding mass storage to your project will never be easier.。This breakout is also a bit unique in that it level translates all of its outputs back to the level of the hardware it's connected to.。Get Started with the SparkFun Level Shifting microSD Guide

Description。The Arducam 5MP Plus OV5642 Mini provides an easy to use camera solution for those working with low-cost microcontrollers such as those used with Arduino and the RP2040 from Raspberry Pi. It's a general purpose 5MP camera module that's SPI enabled reducing the complexity of controlling the camera. It's a step up in performance from it's predecessor， the Arducam-M-5MP. The most impressive aspect being that it's possible to control more than one of these from the same microcontroller. It features a M12 mount or CS-Mount lens holder with the ability to change lenses. Best of all， there's code libraries for Arduino， STM32， Chipkit， Raspberry Pi， and BeagleBone Black.。The Arducam 5MP Plus OV5642 Mini supports JPEG compression mode， single and multiple shoot mode， short movie recording， one-time capture multiple read operation， burst read operation， and low power mode.。Features。Power supply 3.3V～5V。Active array size：2592×1944。SPI speed：Max 8MHz。Shutter：rolling shutter。Frame buffer：8MByte。Pixel Size：1.4μm×1.4μm。Default M12 Lens：55°。Resolution support：5MP， 1080p， 720p， VGA， QVGA。Format support：RAW， YUV， RGB， JPEG。Size：34×24 mm。Weight：20g。Temperature Range：-10℃～+55℃。Lens Specification：sensor size：1/4″； EFL：4.9mm； F/N：2.2； BFL：1.2mm； HFOV：60 degree(SKU：U6067)

Description。Are you low on I/O? No problem! The SX1509 Breakout is 16-channel GPIO expander with an I2C interface that means with just two wires， your microcontroller can interface with 16 fully configurable digital input/output pins. But the SX1509 can do so much more than just simple digital pin control. It can produce PWM signals， so you can dim LEDs. It can be set to blink or even breathe pins at varying rates. This breakout is similar to multiplexer or "mux，" in that it allows you to get more IO from less pins. And， with built-in keypad engine， it can interface with up to 64 buttons set up in an 8x8 matrix.。Two headers at the top and bottom of the breakout board function as the input and control headers to the board. This is where you can supply power to the SX1509， and where your I2C signals SDA and SCL will terminate. GPIO and power buses are broken out in every-which direction， and configurable jumpers cover most of the rest of the board.。Since the I/O banks can operate between 1.2V and 3.6V(5.5V tolerant)independent of both the core and each other， this device can also work as level-shifter. The SX1509 breakout makes it easy to prototype so you can add more I/O onto your Arduino or I/O limited controller. We've even spun up an Arduino Library to get you started!。Features。Enable Direct Level Shifting Between I/O Banks and Host Controller。5.5V Tolerant I/Os， Up to 15mA Output Sink on All I/Os。Integrated LED Driver with Intensity Control。On-Chip Keypad Scanning Engine Supports Up to 8x8 Matrix(64 Keys)。16 Channels of True Bi-directional Style I/O。400kHz I2C Compatible Slave Interface

Description。The SparkFun Artemis Development Kit is the latest board to be released around the SparkFun Artemis Module and it allows access to more software development features than previous Artemis based boards. This Kit includes the SparkFun Artemis DK board as well as the accessories(Himax camera USB-C cable)needed to get started right away. Recommended software used to program the Artemis DK are the Arduino IDE， Arm(R)Mbed(TM)OS(Studio and CLI)， and AmbiqSDK. An updated USB interface(MKL26Z128VFM4 Arm(R)Cortex(R)-M0+ MCU， from NXP)allows the Artemis Dev Kit to act as：Mass Storage Device(MSD)：Used to provide drag and drop programming to the Artemis Module.。Human Interface Device(HID)：Used for the debugging interface to the Artemis Module.。Communication Port(COM)：Used to provide a serial communication UART between the Artemis and the USB connection(PC).。The Artemis Module provides a Cortex(R)-M4F with BLE 5.0 running at 48MHz with an available 96MHz turbo mode and power as low as 6uA per MHz(less than 5mW). The SparkFun Artemis Module is fully FCC/IC/CE certified with 1M flash and 384k RAM you'll have plenty of room for your code. The flexibility of the Artemis module starts with our Arduino core. You can program and use the Artemis module just like you would an Uno or any other Arduino. Additional functionality stems from the ability of the Artemis Dev kit to run RTOS such as the Arm Mbed OS， or the AmbiqSDK.。Attached to the。"Qwiic"。I2C bus， we've added a LIS2DH12TR MEMS accelerometer(for things like gesture recogntion)， a digital MEMS microphone， and an edge camera connector for the Himax CMOS imaging camera to experiment with always-on voice commands， and image recognition with TensorFlow and machine learning. All of the Artemis Development Kit pins are broken out to 0.1" spaced female headers(i.e. connectors). There are also two rows of breakout pins with 0.1" pitch spacing for headers； and a 0.08" pitch spacing to clip on IC-hooks， used by most logic analyzers. Additionally the Silk on the back of the Artemis DK acts as a chart to show pins by functionality(peripherals， ADC， PWM， UART0， UART1)and act as an aid while developing software. The board is powered programmed via USB-C， and includes a Qwiic connector to make I2C easy and is fully compatible with SparkFun's Arduino core to be programmed under the Arduino IDE.。Get Started With the SparkFun Artemis Development Kit Guide。Features。Artemis Dev Kit。Compatible with Arduino， Mbed(TM)OS， and AmbiqSDK Development Programs。Power：5V Provided Through the USB-C Connector。1.8V， 3.3V， and 5V Available on Power Header。Interface Chip(MKL26Z128VFM4 ARM(R)Cortex(R)-M0+ MCU)：Drag and Drop Programming。SWD Interface。JTAG Programming PTH。Artemis Module：Apollo3 ARM(R)Cortex(R)-M4F MCU。BLE 5.0 with FCC Certification。24 Breakout I/O Pins。Eight 14-bit ADC Pins。Eighteen 16-bit PWM Pins。Two Independent UART Ports。Three Peripheral I2C/SPI Buses。JTAG Programming PTH。Sensors：3-axis Accelerometer(LIS2DH12)。PDM Microphone(SPH0641LM4H-1)。Camera Connector(for the Himax HM01B0 Camera)。Qwiic Connector。On Primary I2C Bus。Himax HM01B0 Camera。Image Sensor。Ultra Low Power Image Sensor(ULPIS)designed for Always On vision devices and applications。High sensitivity 3.6μ BrightSenseTM pixel technology。320×320 active pixel resolution with support for QVGA window， vertical flip and horizontal mirror readout。Programmable black level calibration target， frame size， frame rate， exposure， analog gain(up to 8x)and digital gain(up to 4x)。Automatic exposure and gain control loop with support for 50 / 60Hz flicker avoidance。Flexible 1bit， 4bit and 8bit video data interface with video frame and line sync。Motion Detection circuit with programmable ROI and detection threshold with digital output to serve as an interrupt。On-chip self oscillator。I2C 2-wire serial interface for register access。High CRA for low profile module design。Sensor Parameters。Active Pixel Array 320×320。Pixel Size 3.6 μm×3.6 μm。Full Image Area 1152 μm×1152 μm。Diagonal(Optical Format)1.63 mm(1/11″)。Color Filter Array Monochrome and Bayer。Scan Mode：Progressive。Shutter Type：Electronic Rolling Shutter。Frame Rate MAX 51 fps @ 320×320， 60 fps @ 320×240(QVGA)。CRA(maximum)30℃。Sensor Specifications。Supply Voltage：Analog - 2.8 V， Digital - 1.5V(Internal LDO：1.5V - 2.8V)， I/O - 1.5 - 2.8V。Input Reference Clock：3 - 50 MHz。Serial Interface(I2C)：2-wire， 400 KHz max.。Video Data Interface：1b， 4b， 8b with frame / line SYNC。Output Clock Rate MAX：50 MHz for 1bit， 12.5 MHz for 4bit， 6.25 MHz for 8bit。Est. Power Consumption(include IO with 5pF load)：QVGA 60FPS(Typical)<4 mW。QVGA 30FPS(Typical)<2 mW

Description。We are quite familiar with seven-segment displays. We see them on our alarm clocks， ovens， and microwaves. By adding more segments to each digit you can display more than just numbers! Introducing the brand new SparkFun Qwiic Alphanumeric Display. These white fourteen-segment digits allow you display all sorts of numbers， characters， and symbols. With Qwiic， simply plug it in and go. No soldering， no figuring out which is SDA or SCL， and no voltage regulation or translation required!。The SparkFun Alphanumeric Display Arduino library makes printing strings to the display as easy as calling the print()function. With this library， you'll be able to send I2C commands to the VK16K33 LED driver chip to light up segments(including the decimal point or colon)and even scroll your string across the display. You can download the library through the Arduino library manager by searching 'SparkFun Alphanumeric Display' or you can get the GitHub repo as a .zip file and install the library from there.。The VK16K33 also supports I2C address configuration. Simply close a combination of the address jumpers on the back and you can communicate with up to four displays on the same bus. Our slim board design also features detachable stand off holes， vertical Qwiic connectors， and internal mounting holes.。The SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the Qwiic Alphanumeric Display Hookup Guide。Features。White display。Operating Voltage：3.3V。Integrated RC oscillator。Maximum display segment numbers：128 patterns。13×3 matrix key scan circuit。16-step dimming circuit。I2C Addresses：0x70(0x71， 0x72， 0x73)。2x Qwiic connectors。2x Wall Mounting Points

。Description。Product Restrictions：To access certain features of the ATECC608A， users will need to contact Microchip and sign an NDA contract to obtain the complete datasheet. Due to the required NDA - technical support， an Arduino library， and hookup guide are not provided for users on this product.。The SparkFun ATECC608A Cryptographic Co-processor Breakout allows you to add strong security to your IoT node， edge device， or embedded system. This includes。a。symmetric。authentication，。symmetric。AES-128 encryption/decryption， and much more. As stated above， the ATECC608A has limited Arduino support and the complete datasheet is under NDA with Microchip.。This breakout board includes two Qwiic ports for plug and play functionality. Utilizing our handy Qwiic system， no soldering is required to connect it to the rest of your system. However， we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard. The ATECC608A chip is capable of many cryptographic processes， including， but not limited to：Creating and securely storing unique asymmetric key pairs based on Elliptic Curve Cryptography(FIPS186-3).。AES-128：Encrypt/Decrypt， Galois Field Multiply for GCM。Creating and verifying 64-byte digital signatures(from 32-bytes of message data).。Creating a shared secret key on a public channel via Elliptic Curve Diffie-Hellman Algorithm.。SHA-256 HMAC Hash including off-chip context save/restore。Internal high quality FIPS random number generator.。Embedded in the chip is a 10Kb EEPROM array that can be used for storing keys， certificates， data， consumption logging， and security configurations. Access to the sections of memory can then be restricted and the configuration locked to prevent changes. Each ATECC608A Breakout ships with a guaranteed unique 72-bit serial number and includes several security features to prevent physical attacks on the device itself， or logical attacks on the data transmitted between the device.。A summary datasheet for the ATECC608A is available here. The full datasheet is under NDA with Microchip. You will need to contact them for access to the entire datasheet. Meanwhile， the ArduinoATECCX08 Library currently only supports the ATECC608A with SAMD21 Arduino boards.。We do have much more support for the ATECC508A version of this chip. Please check out our ATECC508A Hookup Guide and Arduino Library(which includes six examples). This will get you familiar with the basics of elliptic curve cryptography and signing/verifying data with the ATECC508A version of the chip.。Note：The I2C address of the ATECC608A is 0x60 and is software-configurable to any address. A multiplexer/Mux is required to communicate to multiple ATECC608A sensors at the default address when on a single bus. If you need to use more than one ATECC608A sensor at the default address， consider using the Qwiic Mux Breakout.。Note：The ATECC608A can be only configured once before it is。PERMANENTLY。locked。. It is advisable that users purchase multiple boards in order to use other configurations and explore the advanced functions of the ATECC608A.。Additionally， this board。IS。capable of encrypting and decrypting data. However， to access these additional features， you will need to contact Microchip and sign an NDA contract to obtain the complete datasheet.。It is recommended that an SparkFun RedBoard Turbo - SAMD21 Development Board is used with this product due to the buffer size required on the I2C bus.。The SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。。Features。Operating Voltage：2.0V-5.5V(。Default on Qwiic System：3.3V。)。Active Current Draw(for ATECC608A)：16 mA。Sleep Current(for ATECC608A)：<150 nA。Guaranteed Unique 72-bit Serial Number。10 Kb EEPROM Memory for Keys， Certificates， and Data。Storage for up to 16 Keys。256-bit Key Length。Internal High-Quality FIPS Random Number Generator(RNG)。Configurable I2C Address(7-bit)：0x60(。Default。)

Description。Buttons are an easy and tactile way to interface with your project， but why would you want to deal with debouncing， polling， and wiring up pull-up resistors? The Qwiic Button with built-in green LED simplifies all of those nasty worries away into an easy to use I2C device! Utilizing our Qwiic Connect System， using the button is as simple as connecting cable and loading up some pre-written code!。If you need multiple buttons for your project， fear not! Each button has configurable I2C address， so you can daisy-chain multiple buttons over Qwiic and still address each one individually. We've got an example in our Arduino library that provides super-easy way to configure your Qwiic Button to whatever I2C address you desire. You can download the library through the Arduino library manager by searching 'SparkFun Qwiic Button' or you can get the GitHub repo as .zip file and install the library from there.。In addition to handling blinking and debouncing， the Qwiic Button has configurable interrupts that can be configured to activate upon button press or click. We've also taken the liberty of implementing FIFO queue onboard the Qwiic Button where it keeps an internal record of when the button was pressed. This means that code on your microcontroller need not waste valuable processing time checking the status of the button but instead can run small function whenever the button is pressed or clicked! For more information on interrupts check out our guide here!。The SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the SparkFun Qwiic Button Guide。Features。12mm Green LED Button rated for 50mA。Built in LED can be configured for your desired level of blinkiness!。Each button has configurable I2C address。Configurable interrupts check out our guide here!。FIFO queue。Don't like the color green? Check out the SparkFun Qwiic Button Breakout and add another colored button!。Red LED Tactile Button。Blue LED Tactile Button。Green LED Tactile Button。White LED Tactile Button

Description。The RFM69HCW uses an SPI(Serial Peripheral Interface)to communicate with a host microcontroller， and several good Arduino libraries are available. It supports up to 256 networks of 255 nodes per network， features AES encryption to keep your data private， and transmits data packets up to 66 bytes long.。Features。+20 dBm - 100 mW Power Output Capability。High Sensitivity：down to -120 dBm at 1.2 kbps。High Selectivity：16-tap FIR Channel Filter。Bullet-proof front end：IIP3 = -18 dBm， IIP2 = +35 dBm，80 dB Blocking Immunity， no Image Frequency response。Low current：Rx = 16 mA， 100nA register retention。Programmable Pout：-18 to +20 dBm in 1dB steps。Constant RF performance over voltage range of module。FSK Bit rates up to 300 kb/s。Fully integrated synthesizer with a resolution of 61 Hz。FSK， GFSK， MSK， GMSK and OOK modulations。Built-in Bit Synchronizer performing Clock Recovery。Incoming Sync Word Recognition。115 dB+ Dynamic Range RSSI。Automatic RF Sense with ultra-fast AFC。Packet engine with CRC-16， AES-128， 66-byte FIFO。Built-in temperature sensor

Description。The MCP9600 Breakout is a high accuracy Thermocouple Amplifier equipped with an I2C interface， accessed over our Qwiic system. Inside the chip are two temperature sensors， one for the thermocouple itself(the hot junction)and one for the chip itself(the cold junction). As a result， the MCP9600 can read both the ambient temperature and the temperature of whatever you're trying to measure! The MCP9600 can do both with a resolution of 0.0625℃， and an accuracy of ±1.5℃(worst-case). The MCP9600 Thermocouple Amplifier is one of our many Qwiic compatible boards! Simply plug and go. No soldering， no figuring out which is SDA or SCL， and no voltage regulation or translation required!。This version of the board comes equipped with screw terminals to allow for your own Thermocouple's wiring to be hooked up with the turn of a screw. This makes it perfect for a variety of applications， from measuring the temperature of your Crock-Pot to making sure your backyard induction furnace is up to temperature.。In addition， the MCP9600 has four on-board temperature alerts that you can configure! Instead of constantly polling the sensor over I2C， you can set a temperature limit to trigger an interrupt when the temperature reaches a certain value. This frees up your microcontroller and your I2C bus to do more important things. It's also possible to put the MCP9600 into alternate operation modes in order to save power. The sensor supports a burst mode， where it will take a specified number of samples， return the results， and then go to sleep. This low-power mode makes the MCP9600 perfect for portable applications!。We've written an Arduino library to help you get started quickly. You can download the library through the Arduino library manager by searching 'SparkFun MCP9600' or you can get the GitHub repo as a .zip file and install the library from there.。The SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the Qwiic Thermocouple Amplifier。Features。Temperature Range of -200℃ to 1350℃。Four Onboard Temperature Alerts。Resolution of 0.0625℃。Screw Terminal Connector。ADDR Jumper for variable I2C Addresses(default address of 0x60)。2x Qwiic Connectors

Description。The LilyPad ProtoSnap Plus is a sewable electronics prototyping board that you can use to explore circuits and programming， then break apart to make an interactive fabric or wearable project. Programming the ProtoSnap Plus is easy with the free Arduino software you'll need to program the ATmega32U4 on LilyPad USB Plus at the heart of the board. Once you've installed the software， you'll be able to write and upload your own programs to the board， making it do almost anything you want.。At the center of the ProtoSnap Plus is the LilyPad USB Plus microcontroller， pre-wired to a LilyPad board including a LilyPad Light Sensor， LilyPad Buzzer， LilyPad Button Board， four pairs of colored LilyPad LEDs and a LilyPad Slide Switch. Because these components are connected together on the ProtoSnap board， you can test out your project ideas before you sew. The ProtoSnap Plus also includes expansion ports that let you sew your wearables together or use alligator cables to easily connect external sensors and components. After testing out your coding ideas using the attached LilyPad pieces， you can break apart the prototyping board and sew them into your project!。Please be aware that the Lilypad ProtoSnap Plus is。NOT supported on Windows 7/8。due to a lack of support drivers for those specific OS's.。Note：。A portion of this sale is given back to Dr. Leah Buechley for continued development and education in e-textiles.。Get Started with the LilyPad ProtoSnap Plus Guide

Description。The SparkFun TFT LCD Breakout is a versatile， colorful， and easy way to experiment with graphics or create a user interface for your project. With a 4-wire SPI interface and microSD card holder， you can use this breakout to easily add visual display/interface capabilities to a project as well as providing all the storage you might need for multimedia files.。To get started with this breakout， you will need an Arduino compatible microcontroller of your choice - we recommend something with extra RAM like the SparkFun Thing Plus. The breakout can be powered with either 5V or 3.3V. The microSD card holder is connected to the same SPI bus as the display which keeps the required pin count low and exists to relieve the burden from your microcontroller's poor memory due to having to store hundreds of images of cats， or really whatever you want to keep there. We have also gone ahead and tricked out the SparkFun HyperDisplay library with a driver made especially for this breakout!。Out of the box， the SparkFun TFT LCD Breakout will come with a large backing PCB that makes it easy to securely mount the display in a project. If you need a more flexible solution you can remove the display module， snap off half the backing board， and then re-insert the display module. When this is done you'll be left with the bare minimum frame around the display to more seamLessly integrate with your project.。Get Started With the SparkFun TFT LCD Breakout Guide。Features。128×160 RGB pixels。Up to 18 bit configurable color depth。2x PWM controllabele LED backlight。microSD Card Slot。V-Score for Minimal Footprint Setup

Description。The PicoBuck LED Driver is an economical and easy to use driver that will allow you to control and blend three different LEDs on three different channels. By default， each channel is driven at 330mA； that current can be reduced by either presenting an analog voltage or a PWM signal to the board. Version 12 of the board adds a solderable jumper that can be closed to increase the maximum current to 660mA. The new voltage regulator also increased the voltage rating on the various components on the board， allowing it to be used up to the full 36V rating of the AL8805 part.。Three signal inputs are provided for dimming control. You can use the PWM signal from an Arduino or your favorite microcontroller to dim each channel individually， or you can tie them all to the same PWM for simultaneous dimming. Dimming can be done by an analog voltage(20%-100% of max current by varying voltage from .5V-2.5V)or by PWM(so long as PWM minimum voltage is less than .4V and maximum voltage is more than 2.4V)for a full 0-100% range. A small jumper is provided for each channel to allow you to increase the drive strength from 330mA to 660mA. Two mounting holes for 4-40 or M3 screws are provided on either side of the board. They are perforated so they can be easily snapped off with a pair of pliers， if a smaller footprint is desired.。Note：。If you're going to use screw terminals， this board uses two different sizes. Check the related products for both sizes you'll need.。Note：。The PicoBuck LED Driver was made in collaboration with Ethan Zonca. A portion of each sale is given back to him.

Description。It's time to say hip hip array for this IR Breakout! The MLX90640 SparkFun IR Array Breakout is equipped with a 32x24 array of thermopile sensors creating， in essence， a low resolution thermal imaging camera. With this breakout you can detect surface temperatures from many feet away with an accuracy of ±1.5℃(best case). To make it even easier to get your infrared image， all communication is enacted exclusively via I2C， utilizing our handy Qwiic system. However， we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard.。This specific IR Array Breakout features a。55°x35°。field of view with a temperature measurement range of -40℃-300℃. The MLX90640 IR Array has pull up resistors attached to the I2C bus； both can be removed by cutting the traces on the corresponding jumpers on the back of the board. Please be aware that the MLX90640 requires complex calculations by the host platform so a regular Arduino Uno(or equivalent)doesn't have enough RAM or flash to complete the complex computations required to turn the raw pixel data into temperature data. You will need a microcontroller with 20，000 bytes or more of RAM. To achieve this， we recommend a Teensy 3.1 or above.。The SparkFun Qwiic connect system is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the SparkFun IR Array Breakout Guide。Features。Operating Voltage：3V-3.6V。Current Consumption：～18mA。Field of View：55°x35°。Measurement Range：-40℃-300℃。Resolution：±1.5℃。Refresh Rate：0.5Hz-64Hz。I2C Address：0x33。2x Qwiic Connection Ports

Description。It's time to say hip hip array for this IR Breakout! The MLX90640 SparkFun IR Array Breakout is equipped with a 32x24 array of thermopile sensors creating， in essence， a low resolution thermal imaging camera. With this breakout you can detect surface temperatures from many feet away with an accuracy of ±1.5℃(best case). To make it even easier to get your low-resolution infrared image， all communication is enacted exclusively via I2C， utilizing our handy Qwiic system. However， we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard.。This specific IR Array Breakout features a 110°x75° field of view with a temperature measurement range of -40℃-300℃. The MLX90640 IR Array has pull up resistors attached to the I2C bus； both can be removed by cutting the traces on the corresponding jumpers on the back of the board. Please be aware that the MLX90640 requires complex calculations by the host platform so a regular Arduino Uno(or equivalent)doesn't have enough RAM or flash to complete the complex computations required to turn the raw pixel data into temperature data. You will need a microcontroller with 20，000 bytes or more of RAM. To achieve this， we recommend a Teensy 3.1 or above.。Note：The I2C address of the MLX90640 is 0x33 and is hardware defined. A multiplexer/Mux is required to communicate to multiple MLX90640 sensors on a single bus. If you need to use more than one MLX90640 sensor consider using the Qwiic Mux Breakout.。The SparkFun Qwiic connect system is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the SparkFun IR Array Breakout Guide。Features。Operating Voltage：3V-3.6V。Current Consumption：～18mA。Field of View：110°x75°。Measurement Range：-40℃-300℃。Resolution：±1.5℃。Refresh Rate：0.5Hz-64Hz。I2C Address：0x33。2x Qwiic Connection Ports

Description。This is the SparkFun RFM69 Breakout， a small piece of tech that breaks out all the pins available on the RFM69HCW module as well as making the transceiver easy to use. The RFM69HCW is an inexpensive and versatile radio module that operates in the unlicensed ISM(Industry， Science and Medicine)radio band. It's perfect for building inexpensive short-range wireless networks of sensors and actuators for home automation， citizen science and more.。This RFM69HCW operates on the 434MHz frequency and is capable of transmitting at up to 100mW and up to 300kbps， but you can change both of those values to fit your application. For example， you can maximize range by increasing the transmit power and reducing the data rate， or you can reduce both for short-range sensor networks that sip battery power. At full power and with simple wire antennas， we can get messages from one side of a large office building to the other through numerous internal walls. In open air you can reach 500 meters or more. With more complex antennas and modulation schemes， similar parts have successfully transmitted from space to the ground(by very smart amateur radio enthusiasts； your mileage may vary)!。The RFM69HCW uses an SPI(Serial Peripheral Interface)to communicate with a host microcontroller， and several good Arduino libraries are available. It supports up to 256 networks of 255 nodes per network， features AES encryption to keep your data private， and transmits data packets up to 66 bytes long.。SparkFun sells two versions of the RFM69HCW：a 915MHz version and this 434MHz version. Although the ISM band is license-free， the band itself is different in different areas. Very roughly， 915MHz is for use in the Americas， and the 434MHz version is for use in Europe， Asia and Africa. Check your local regulations for other areas.。Get Started with the RFM69HCW Hookup Guide。Features。Transmit power：-18dBm(0.016mW)to +20dBm(100mW)in 1dBm steps。Receive sensitivity：down to -120dBm at 1.2kbps。Modulation types：FSK GFSK MSK GMSK OOK。Bit rates(FSK)：1.2kbps to 300kbps。Voltage range：1.8V to 3.6V。Current consumption：0.1uA sleep， 1.25mA standby， 16mA receive， 130mA transmit(max)。Encryption：AES 128-bit(optional)。Packet buffer(FIFO)：66 bytes。0.8"×1.1"

Description。The SparkFun Qwiic Quad Relay is a unique power accessory board that has been designed for switching not one but four high powered devices from your Arduino or another low powered microcontroller using I2C. Taking a look at the board， the Quad Relay has four individual relays rated up to 5 Amps per channel at 250VAC or 30VDC. Each channel also has its own uniquely colored LED， silk for easy identification， and screw terminals for optional connection. Utilizing our handy Qwiic system， no soldering is required to connect it to the rest of your system!。At the heart of the SparkFun Qwiic Quad Relay is an ATtiny84 that takes various commands to toggle the four relays. The I2C address of the ATtiny84A is software configurable so if you had the desire and power， you could daisy chain over 100 Qwiic Quad Relays. There is also a header that breaks out the four I2C lines if you're not taking advantage of the Qwiic connectors. And last up， the barrel jack is rated for wall adapters in the range 7-12V but we have equipped this relay board with a jumper on the underside of the board if you want to use wall adapters at 5V.。Messing with such high voltage is dangerous! We've included many safety precautions onto the PCB including， wide traces designed for high amperage， ground isolation between the relay and other circuitry， and a milled out area around the common pin of the relay. However， with all the safety precautions included with the SparkFun Qwiic Quad Relay， this is still a power accessory for users who are experienced around， and knowledgeable about high AC voltage. If that's not quite your jam， that's okay! Check out the IoT Power Relay， instead， to start learning how to use power relays easily!。The SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the SparkFun Qwiic Quad Relay Guide。Features。Four JZC-11F Relays。5A at 250VAC， 30VDC。Each relay has its own colored LED and silk labels for easy identification.。Safey Features。Ground pour isolated from relays.。Air gap around common pin on the relays.。Large trace width on relay pins far exceeding the peak 5A current.。ATtiny84A。I2C commands for toggling individual relays or all the relays at once.。I2C commands for turning all relays off or on.。Two I2C addresses。0x6D(Default)。0x6C。I2C address is software configurable.。All commands are listed in the example code.。Screw Terminals。26-14 Gauge AWG wire。Power。Max Current Draw ～250mA。Vin via Barrel Jack。7V to 12V。Vin via Barrel Jack w/ Bypass Jumper Closed。5V。Revision Changes：。The latest revision includes the following updates.。Included a normally closed jumper for the power LED.。Switching regulator in place of a linear regulator.。The switching regulator is much more efficient； no external cooling needed when powering four relays at once.。Improved circuitry around the relays.。An issue where relays on certain boards in v1.0 didn't switch completely when actuated has been resolved.

microSDカードを使用したデータロガー。32GBまでのmicroSDカードを使用して、シリアル接続により動作するデータロガーです。大量のデータを保存することができます。16MHzで動作するATmega328を搭載し、記録していないアイドルモードでの消費電力は約2～3mAです。

Description。Get with the times， already! This SparkFun Real Time Clock(RTC)Module is a Qwiic-enabled breakout board for the RV-1805 chipset. The RTC is ultra-low power(running at only about 22nA in its lowest power setting)so it can use a supercapacitor for backup power instead of a normal battery. This means you get plenty of charge and discharge cycles without any degradation to the "battery." To make it even easier to get your readings， all communication is enacted exclusively via I2C， utilizing our handy Qwiic system so no soldering is required to connect it to the rest of your system. However， we still have broken out 0.1"-spaced pins in case you prefer to use a breadboard.。This RTC module's built in RV-1805 has not one， but two internal oscillators：a 32.768kHz tuning fork crystal and a low power RC based oscillator and can automatically switch between the two using the more precise crystal to correct the RC oscillator every few minutes. This feature allows the module to maintain a very accurate date and time with the worst case being +/- about three minutes over a year. The RV-1805 also has a built in trickle charger so as soon as the RTC is connected to power the it will be fully charged in under 10 minutes and has the ability to switch power to other systems allowing it to directly turn on or off a power hungry device such as a microcontroller or RF engine.。There is also the option to add a battery to the board if the supercapacitor just isn't going keep your project powered long enough(keep in mind， the supercap can hypothetically make the board keep time for around 35 days)， you can solder on an external battery. That means you can let board sit with no power or connection to the outside world and the current hour/minute/second/date will be maintained.。Note：。The I2C address of the RV-1805 is 0x69 and is hardware defined. A multiplexer/Mux is required to communicate to multiple RV-1805 sensors on a single bus. If you need to use more than one RV-1805 sensor consider using the Qwiic Mux Breakout.。The SparkFun Qwiic connect system is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the RV-1805 Real Time Clock Module Guide。Features。Operating Voltage(Startup)：1.6V - 3.6V。Operating Voltage(Timekeeping)：1.5V - 3.6V。Operating Temperature：-40℃ - 85℃。Time Accuracy：±2.0 ppm。Current Consumption：22nA(Typ.)。I2C Address：0xD2。Supercapacitor for Backup Power。2x Internal Oscillators。2x Qwiic Connectors