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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

Description。If you're looking for a fully-featured Raspberry Pi 4 case， then look no further than the Argon ONE Pi 4 Raspberry Pi Case. In addition to providing passive and active cooling to keep the Pi 4 running cool， it incorporates multiple pieces to allow for access to different levels of the board like a magnetic dedicated door for the 40 pin connector that provides pin numbers and labels. An included fan HAT provides software controllable， active cooling while the aluminum enclosure provides passive cooling through two extrusions that provide a heat sink for the ICs on board(thermal tape included). An additional interface board plugs into the Pi and redirects all the connectors(outside of the 40 pin)to the one side of the enclosure. But probably the best feature is a properly configured power button that provides the ability to safely shutdown， reboot， or force shutdown the Pi.。Features。Passive and active Cooling。All connectors positioned to one side of the enclosure。Magnetic door provides access to the 40 pin header without exposing the board。Aluminum enclosure with plastic base。Power button for safe power cycling

Description。The Raspberry Pi 4 Hardware Starter Kit provides a solid set of parts and instruction for working with the Raspberry Pi 4 in a more hardware-centric manner. While the Raspberry Pi isn't typically considered a go-to for hardware projects， its I/O pins hold a lot of benefits that you can use for a variety of applications. This kit covers the basics like using LEDs， and Buttons while providing a solid set of parts for working with any other hardware I/O and the 40-pin header. In addition， we've included all the parts needed for getting the Raspberry Pi 4 up and running whether it's on its own， or using a monitor(not included). The new 64GB MicroSD cards keep read/write commands running super fast， too.。Most of the contents of the kit rely on the use of the 2x20， 40-pin header， so we've included a special extender to allow you to plug in the ribbon cable while using the provided heatsink case. We've also included a Qwiic Shim for easily working with I2C based Qwiic boards with the Pi. No soldering is required for this kit!。Note：This variation includes the 4GB RAM option for the Raspberry Pi 4.。Get Started with the Raspberry Pi 4 Model B Guide

Description。The Raspberry Pi 4 Hardware Starter Kit provides a solid set of parts and instruction for working with the Raspberry Pi 4 in a more hardware-centric manner. While the Raspberry Pi isn't typically considered a go-to for hardware projects， its I/O pins hold a lot of benefits that you can use for a variety of applications. This kit covers the basics like using LEDs， and Buttons while providing a solid set of parts for working with any other hardware I/O and the 40-pin header. In addition， we've included all the parts needed for getting the Raspberry Pi 4 up and running whether it's on its own， or using a monitor(not included). The new 64GB MicroSD cards keep read/write commands running super fast， too.。Most of the contents of the kit rely on the use of the 2x20， 40-pin header， so we've included a special extender to allow you to plug in the ribbon cable while using the provided heatsink case. We've also included a Qwiic Shim for easily working with I2C based Qwiic boards with the Pi. No soldering is required for this kit!。Note：This variation includes the 8GB RAM option for the Raspberry Pi 4.。Get Started with the Raspberry Pi 4 Model B Guide

Description。This is an evaluation board for the Silicon Laboratories Si4703 FM tuner chip. Beyond enabling you to tune in to FM radio stations， the Si4703 is also capable of detecting and processing both Radio Data Service(RDS)and Radio Broadcast Data Service(RBDS)information. The Si4703 even does a very good job of filtering and carrier detection. It also enables data such as the station ID and song name to be displayed to the user.。Using this board， you will be able to pick up multiple stations just as well as with a standard FM radio. The board breaks out all major pins and makes it easy to incorporate this great chip into your next radio project. The power bus， the 3.3V and GND pins are broken out For communication. The breakout provides access to SDIO and SCLK for I2C communication while RST can be used for easy resetting. The SEN pin enables the user to change the mode of functionality of the IC. The last two pins broken out are GPIO1 and GPIO2 which can be used as general input/output pins， but also can be used for things like the RDS ready， seeking or tuning functions.。Keep in mind， by plugging headphones into the 3.5mm audio jack， you effectively use the cable in your headphones as an antenna! Therefore， this board does not require an external antenna if using headphones or a 3.5mm audio cable longer than 3 feet.

。Description。The SparkFun Wireless Joystick Kit provides an easy way to control your next XBee project. Before the wireless joystick， radio-controlled projects used hobby RC transmitters， the same ones used for RC cars， boats and planes. The problem with these transmitters is that many aren't customizable， and the ones that are tend to be too expensive for many of us. The Wireless Joystick Kit offers a custom wireless solution for those who want to control their project their own way.。Equipped with the increasingly popular SAMD21 onboard， all you need is to assemble the SparkFun Wireless Joystick into the configuration you want and add your own XBee and lithium ion battery into the provided sockets. The Wireless Joystick Kit can be assembled into a configuration that utilizes dual joysticks for better RC steering robots(like tanks)or a single joystick configuration with four 12mm momentary pushbuttons(a setup similar to what older game consoles used). We have provided a full Hookup Guide that gives assembly instructions， as well as a tank-steering motor controller tutorial to help get you started!。Please be aware that the SparkFun Wireless Joystick Kit is。NOT supported on Windows 7/8。due to a lack of support drivers for those specific OS's.。Note：This kit will need to be assembled before use， so a beginner's knowledge of soldering will be required. Additionally， in an effort to keep shipping rates down and make this kit available to people throughout the world without delay， there is no XBee or lithium ion battery included.。Get Started with the Wireless Joystick Kit 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。Need to keep track of the airflow in your data center or around your servers? How about making sure your HVAC and air control systems are functioning at full capacity? Well， the new SparkFun FS3000-1005 Air Velocity Sensor Breakout can help you with all that and more! It's super easy and super quick(Qwiic!)to hook up.。This breakout board is focused around Renesas' FS3000-1005， a surface-mount air velocity module with a range of 0-7.2m/s(0-16.2mph). It utilizes a MEMS thermopile-based sensor， features a digital output with 12-bit resolution and comprises a "solid" thermal isolation technology and silicon carbide coating to protect it from abrasive wear and water condensation.。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 Air Velocity' 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 Air Velocity Sensor Breakout。Features。I2C address：0x28。Air flow speed：0 - 7.23 m/sec(0 - 16.17mph)。Accuracy：5 % of full scale flow range。12-bit resolution。Input Voltage：2.7-3.3V。Average current draw：10mA

。Description。Add another eight pins to your microcontroller using a MCP23008 port expander. The MCP23008 uses two I2C pins which can be shared with other I2C devices， and in exchange gives you eight general purpose pins. You can set each of eight pins to be input， output， or input with a pullup. There's even the ability to get an interrupt via an external pin when any of the inputs change so you don't have to keep polling the chip.。Use this chip from 2.7-5.5V(good for any 3.3V or 5V setup)， and you can sink/source up to 20mA from any of the I/O pins so this will work for LEDs and such. Team it up with a high-power MOSFET if you need more juice. DIP package means it will plug into any breadboard or perfboard.。You can set the I2C address by tying the ADDR0-2 pins to power or ground， for up to eight unique addresses. That means eight chips can share a single I2C bus - that's 64 I/O pins!。Features。8-bit remote bidirectional I/O port。High-speed I2C interface(MCP23008)。Hardware address pins。Configurable interrupt output pin。Configurable interrupt source。Polarity Inversion register for input port data polarity config.。External reset input。Low standby current：1 μA(max.)・ Operating voltage：。1.8V to 5.5V @ -40℃ to +85℃ I2C @ 100 kHz SPI @ 5 MHz。2.7V to 5.5V @ -40℃ to +85℃ I2C @ 400 kHz SPI @ 10 MHz。4.5V to 5.5V @ -40℃ to +125℃ I2C @ 1.7 kHz SPI @ 10 MHz

Description。Your 5V system can wield great power with this big， beefy relay board. How does 10A on the NC contacts and 20A on the NO contacts at 220VAC sound? The SparkFun Beefcake Relay Control Kit contains all the parts you need to get your high-power load under control. Only minimal assembly is required!。The heart of the board is sealed， SPDT 20A/10A Relay. The relay is controlled by 5V logic through transistor， and an LED tells you when the relay is closed. This is kit， so it comes as through-hole parts with assembly required， which makes for some nice soldering practice. Screw terminal connectors on either side of the board make it easy to incorporate into your project.。There are some pretty beefy traces connecting the relay to the load pins， but the 3-pin terminals are only rated for 15A max! If you plan on connecting larger load， you'll need to solder directly to the board. As always with high current and voltage， play it safe and use your judgment when deciding how much of load you want to put on board -- in open airflow the PCB can handle the full 20A for few minutes at time， but in an enclosed area heat can build up.。Note：Please keep in mind that this board is really meant for someone with experience and good knowledge of electricity. If you're uncomfortable soldering or dealing with high voltage， please check out the IoT Power Relay. The IoT Power Relay is fully enclosed， making it lot safer.。Get Started With the Beefcake Hookup Assembly Guide。Features。Voltage Rating：220VAC/28VDC。VCC requirements：4-6V， 150mA capable。SPDT pins exposed(Form C)。14 AWG screw terminals for relay connections.。10 AWG solder lugs for relay connections.。Flyback diode included。Zener recovery diode included(decreases turn-off time)。Heavy oz. copper on PCB

Description。The Teensy is an amazing and compact development platform in breadboard friendly form factor， but what if you could incorporate it into the Arduino architecture? The Teensy Arduino Shield Adapter allows you to attach your Teensy and utilize your favorite Arduino shields without the requirement of breadboard or any complicated wiring. Needless to say， the Teensy Arduino Shield Adapter is useful tool for upgrading all of your existing Arduino projects to more powerful controller!。As we stated before， the Teensy Arduino Shield Adapter provides basic Arduino compatibility with your run-of-the-mill shield but there are few other fun features that we've added on， as well. These features include Real Time Clock(RTC)battery， JST battery connector， 4-12V barrel jack connector， an ICSP header， and more. Because this board is simply an adapter， there is no special programming required to start working with the adapter. You will， however， need to program the Teensy for any Arduino shield you'd like to work with.。While the adapter design can fit the Teensy LC footprint， it has been designed to fully utilize the features of the Teensy 3.1. Not all of the features available on the adapter are compatible with the LC so please be sure to check the Hookup Guide in the。Documents。section below to ensure functionality for your project. Please keep in mind that this adapter may be incompatible with some 5V Arduino shields. Please check our hookup guide for more information.。Note：The Teensy Arduino Shield Adapter comes as kit and will need to be soldered together.。Note：Due to the requirements of shipping the batteries in this kit， orders may take longer to process and therefore do not qualify for same-day shipping. Additionally， these batteries can not be shipped via Ground or Economy methods to Alaska or Hawaii. Sorry for any inconvenience this may cause.。Features。Arduino R3 Interface。Real Time Clock Battery。JST Battery Connector。Barrel Jack。I2C Jumpers。ICSP Header。DAC Pin Header

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"

Small heat sink for TO-220 components. Ideal for keeping your 5V and 3.3V regulators running cool. Black anodized bolt on type with 2.5W dissipation.

Description。The Raspberry Pi 4 Case Fan works with Raspberry Pi 4 and the Raspberry Pi 4 Case. Designed for overclockers and other power users， it keeps your Raspberry Pi 4 at a comfortable operating temperature even under heavy load.。The temperatu

Description。Cherry MX Keyswitches are top-of-the-line mechanical keyboard switches. They're satisfyingly "clicky"， reliable up to tens-of-millions of key presses， and a standard in gaming and programming keyboards across the globe. With the SparkFun Cherry MX Switch Breakout we have made the switches more easily adaptable to breadboard or perfboard-based projects. The Cherry MX Switch Breakout is a perfect prototyping tool for projects ranging from a single-key user-input to fully-custom 101-key keyboards.。In addition to breaking out the switch contacts to breadboard-compatible headers， the Cherry MX Switch Breakout also provides access to an optional switch-mounted LED. Plus， the pin break-outs are designed with keyboard matrix-ing in mind， so you can interconnect as many boards as you'd like into a row-column configuration， keeping the I/O-pin requirements as low as possible.。Note：If you are looking for a Cherry MX Switch to use with this breakout， we've got you covered! CLICK HERE!。Get Started with the Cherry MX Switch Guide。Features。Support for 3mm LED。Footprint for LED current-limiting resistor。Footprint for switch-isolating diode。Chain-able in row/column matrices。Designed to match standard key spacing and keyboard row offsets

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 SparkFun RV-8803 Real Time Clock Module is a Qwiic-enabled breakout board for the RV-8803 RTC. The RV-8803 boasts some impressive features including a temperature compensated crystal providing extremely precise time-keeping， low power consumption， and time stamp event input along with a user-programmable timing offset value. The RV-8803 also has an improved I2C interface compared to the RV-1805 RTC that removes the need to sequence commands/writes to the device. Best of all， the temperature compensation comes factory calibrated. 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.。Adding a real-time clock to your project is the perfect way to get more accurate data； timing or otherwise. Using the Qwiic connector makes for a fast， solid way to incorporate this into your project. The RTC module has counters for hundredths of seconds， seconds， minutes， hours， date， month， year and weekday with a number of alarm and interrupt settings available as well. Plus the large operating temperature range(-40 to +105℃)and temperature compensated crystal makes for a good addition for field applications or harsh environments.。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 RV-8803 Real Time Clock Module Guide。Features。Factory Calibrated Temperature Compensation。High Time Accuracy。±1.5 ppm 0 to +50℃。±3.0 ppm -40 to +85℃。±7.0 ppm +85 to +105℃。1.5V to 5.5V Operating Voltage Range。240nA @ 3.3v Low-Power Consumption。I2C Address：0x32。Periodic Countdown Timer Interrupt function。Periodic Time Update Interrupt function(seconds， minutes)。Alarm Interrupts for weekday or date， hour and minute settings。External Event Input with Interrupt and Time Stamp function。Programmable Clock Output pin for peripheral devices.。Operating temperature range：-40 to +105℃。2x Qwiic Connectors

。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。The SparkFun RTK Express Plus is an easy to use GNSS receiver for centimeter-level positioning. Perfect for surveying， autonomous vehicles， logging， and all types of post processing， this preprogrammed device can also be used for autonomous driving， navigation， asset tracking and any other application where there is a clear view of the sky. The RTK Express Plus adds an internal IMU to combine real-time GNSS tracking with advanced sensor fusion. The result is accurate positioning even when GNSS is lost in tunnels， parking garages， etc. Out of the box an RTK Express Plus can be used with a correction source to create an RTK system capable of 14mm horizontal positional accuracy. The built-in Bluetooth(R)connection via an ESP32 WROOM enables the user to use the RTK Express Plus with their choice of GIS application on a phone or tablet. The built in battery allows for over five hours of field use and is compatible with common USB battery banks.。We took all the lessons from the RTK Surveyor and built the RTK Express Plus. The RTK Express Plus is built upon the ZED-F9R u-blox receiver which uses the same F9 engine as all our RTK products but couples it with a built-in IMU. The embedded display allows for immediate feedback of horizontal positional accuracy， satellites in view， logging status， sensor fusion status， battery level， Bluetooth(R)MAC， etc. The rocker switches found on the original have been replaced by keypad buttons. We increased the battery to 1300mAh for a longer run time. The internal switches have been replaced by a digital mux allowing for some really exciting applications including event triangulation. More ESD protection was added to protect the RF path， and we even threw in an accelerometer for digital leveling in the field. Please note u-blox's sensor fusion algorithms are designed specifically for vehicles and will not aid in the accuracy of normal surveying.。This device can be used in two modes：GNSS Positioning(～30cm accuracy)。GNSS Positioning with RTK(1.4cm accuracy)。In Position mode the device receives L1/L2 signals from a user-provided antenna and the high-grade GNSS receiver provides lat/long and altitude with accuracies around 300mm. If enabled in automotive applications， the internal IMU augments the position information when GNSS reception is degraded.。In Positioning with RTK mode the device receives L1/L2 signals from the antenna and correction data from a base station. The correction data can be obtained from a cellular link to online correction sources or over a radio link to a RTK Surveyor/Express setup as a base station. If enabled in automotive applications， the internal IMU augments the position information when GNSS reception is degraded.。Two cables are provided with the RTK Express Plus allowing a user to plug in our easy to use Serial Telemetry Radios or their own radio link. If a local correction source is within 10km， a user can also use their phone to provide correction data over the Bluetooth(R)link(no external radio needed!).。Note：The SparkFun RTK Express Plus is just the enclosed device and does NOT include an antenna， serial telemetry radio， or associated mounting pieces. These items will need to be purchased separately from the Hookup Accessories below.。Get Started With the SparkFun RTK Express Guide。Features。GNSS Receiver：ZED-F9R。Concurrent reception of GPS， GLONASS， Galileo and BeiDou。Receives both L1C/A and L2C bands。Built-in IMU(triple axis accel， triple axis gyro)。Current：68mA - 130mA(varies with constellations and tracking state)。Time to First Fix：25s(cold)， 2s(hot)。Max Navigation Rate：PVT(basic location over UBX binary protocol)- 25Hz。RTK - 20Hz。Raw - 25Hz。Horizontal Position Accuracy：2.5m without RTK。0.010m with RTK。Max Altitude：50km(31 miles)。Max Velocity：500m/s(1118mph)。Bluetooth(R)Transceiver：ESP32 WROOM。Xtensa(R)dual-core 32-bit LX6 microprocessor。Up to 240MHz clock frequency。16MB of flash storage。520kB internal SRAM。Integrated 802.11 BGN WiFi transceiver。Integrated dual-mode Bluetooth(R)(classic and BLE)。Hardware accelerated encryption(AES， SHA2， ECC， RSA-4096)。2.5 μA deep sleep current。Overall Device。Internal Battery：LiPo 1300mAh with 500mA charging。Radio Port：3.3V TTL Serial(57600bps RTCM TX/RX)。Data Port：3.3V TTL Serial(460800bps NMEA)。Embedded OLED Display for available satellites， data logging， and more.。Push button controls。Weight：162g(entire device including battery)。Dimensions：132mm×101mm×32mm(5.2in×3.9in×1.2in)。1x Qwiic Connector。1x microSD Socket for optional logging

Description。The SparkFun RTK Express is an easy to use GNSS receiver for centimeter-level positioning. Perfect for surveying， logging， and all types of post processing， this preprogrammed device can also be used for autonomous driving， navigation， asset tracking and any other application where there is a clear view of the sky. The RTK Express can also be used as a base station. With the press of a button， two RTK Expresses can be used to create an RTK system capable of 14mm horizontal positional accuracy. The built-in Bluetooth(R)connection via an ESP32 WROOM enables the user to use the RTK Express with their choice of GIS application on a phone or tablet. The built in battery allows for over five hours of field use and is compatible with common USB battery banks.。We took all the lessons from the RTK Surveyor and built the RTK Express. The RTK Express is built upon the same ZED-F9P u-blox receiver as the original RTK Surveyor so you can expect the same incredible performance and rich feature set. The embedded display allows for immediate feedback of horizontal positional accuracy， satellites in view， logging status， survey-in status， battery level， Bluetooth(R)MAC， etc. The rocker switches found on the original have been replaced by keypad buttons. We increased the battery to 1300mAh for a longer run time. The internal switches have been replaced by a digital Mux allowing for some really exciting applications including event triangulation. More ESD protection was added to protect the RF path， and we even threw in an accelerometer for digital leveling in the field.。This device can be used in four modes：GNSS Positioning(～30cm accuracy)。GNSS Positioning with RTK(1.4cm accuracy)。GNSS Base Station。GNSS Base Station NTRIP Server。In Position mode the device receives L1/L2 signals from a user-provided antenna and the high-grade GNSS receiver provides lat/long and altitude with accuracies around 300mm.。In Positioning with RTK mode the device receives L1/L2 signals from the antenna and correction data from a base station. The correction data can be obtained from a cellular link to online correction sources or over a radio link to a second RTK Surveyor/Express setup as a base station.。In Base Station mode the device is mounted to a temporary position(like a tripod)and begins transmitting correction data over a radio or Internet connection. A base is often used in conjunction with a second unit set to 'Positioning with RTK' to obtain the 14mm relative accuracy. The RTK Surveyor and RTK Express are interchangeable as a Base Station； an RTK Surveyor can be a base for an RTK Express and vice versa.。In Base Station NTRIP Server mode the device is mounted to a semi or permanently fixed position(like a roof)and connects over WiFi to transmit the correction data to a NTRIP caster so that any rover can access the correction data over a cellular or Internet connection. This type of base is a very easy way to set up a very precise absolute correction source.。Two cables are provided with the RTK Express allowing a user to plug in our easy to use Serial Telemetry Radios or their own radio link. If a local correction source is within 10km， a user can also use their phone to provide correction data over the Bluetooth(R)link(no external radio needed!).。Note：The SparkFun RTK Express is just the enclosed device and does NOT include an antenna， serial telemetry radio， or associated mounting pieces. These items will need to be purchased separately from the Hookup Accessories below.。Get Started With the SparkFun RTK Express Guide。Features。GNSS Receiver：ZED-F9P。Concurrent reception of GPS， GLONASS， Galileo and BeiDou。Receives both L1C/A and L2C bands。Current：68mA - 130mA(varies with constellations and tracking state)。Time to First Fix：25s(cold)， 2s(hot)。Max Navigation Rate：PVT(basic location over UBX binary protocol)- 25Hz。RTK - 20Hz。Raw - 25Hz。Horizontal Position Accuracy：2.5m without RTK。0.010m with RTK。Max Altitude：50km(31 miles)。Max Velocity：500m/s(1118mph)。Bluetooth(R)Transceiver：ESP32 WROOM。Xtensa(R)dual-core 32-bit LX6 microprocessor。Up to 240MHz clock frequency。4MB of flash storage。520kB internal SRAM。Integrated 802.11 BGN WiFi transceiver。Integrated dual-mode Bluetooth(R)(classic and BLE)。Hardware accelerated encryption(AES， SHA2， ECC， RSA-4096)。2.5 μA deep sleep current。Overall Device。Internal Battery：LiPo 1300mAh with 500mA charging。Radio Port：3.3V TTL Serial(57600bps RTCM TX/RX)。Data Port：3.3V TTL Serial(115200bps NMEA)。Embedded OLED Display for available satellites， data logging， and more.。Push button controls。Weight：162g(entire device including battery)。Dimensions：132mm×101mm×32mm(5.2in×3.9in×1.2in)。1x Qwiic Connector。Changes：This version(which replaces SPX-18019)uses a reinforced edge mount SMA connector for better resiliency when a fixed 'stub' antenna is used.

Description。The SparkFun Qwiic micro：bit Breakout is a board that connects to the BBC micro：bit and expands the capabilities of the development platform by providing access to more pins and allowing for connections to the I2C and SPI buses. This breakout board for the micro：bit's edge connector allows intermediate and advanced users to connect the micro：bit to breadboards and other Qwiic sensors， motors， LEDs and more.。The micro：bit on its own has three digital/analog input/output rings available for you to use initially with alligator clips. With the micro：bit Breakout we have broken out all 21 GPIO， power and ground-to-pin outs in a 0.1" formation and with two individual Qwiic Connectors. With this breakout you will be able to unlock the full potential of your micro：bit!。Note：。No micro：bit or headers are included with this breakout； they will need to be purchased separately. If you would like a micro：bit breakout with headers already soldered on， be sure to check out this board's sibling.。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 micro：bit Breakout Guide

。Description。Do you want to replace a slider or a button on your art project or science experiment with a more interesting interface? This Capacitive Touch Slider is a "Qwiic" and easy way to add capacitive touch to your next project. With the board's built in touch pads， you can immediately start playing with the touch capabilities as three unique touch inputs or as a slider. You can also enable a touch input to act as a power button， customize the sensitivity for your own touch pads， and play with the interrupt alert LED. Utilizing our Qwiic system， no soldering is required to connect it to the rest of your system. However， we have broken out 0.1"-spaced pins in case you prefer to use a breadboard or create your own touch pads.。On the front of the board， there is an arrow shape which contains three separate capacitive touch pads. We also broke out the capacitive touch sensor lines as plated through-holes on the top of the board. You can use these pins to connect to your own capacitive touch pads. The CS1 pin connects to the left pad， the CS2 pin connects to the middle pad， and the CS3 pin connects to the right pad.。NOTE：The I2C address of the CAP1203 is 0x28 and is hardware defined. A multiplexer/Mux is required to communicate to multiple CAP1203 sensors on a single bus. If you need to use more than one CAP1203 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 Capacitive Touch Slider Guide。Features。Capacitive Touch。3 unique capacitive touch inputs。Features。Emulated slider。Power button setting。Programmable sensitivity。Automatic recalibration。I2C Address：0x28。Qwiic Enabled。Operating Range。Supply Voltage：3.3V - 5V

Description。If you are not needing a lot of power to start your FPGA adventure， or are looking for a more economical option， the Alchitry Cu FPGA Development Board might be the perfect option for you! The Alchitry Cu is a "lighter" FPGA version than the Alchitry Au but still offers something completely unique. FPGAs， or Field-Programmable Gate Arrays， are an advanced development board type for engineers and hobbyists alike to experience the next step in programming with electronics. The Cu truly exemplifies the trend of more affordable and increasingly powerful FPGA boards arriving each year. This board is a fantastic starting point into the world of FPGAs and the heart of your next project. Finally， now that this board is built by SparkFun， we added a Qwiic connector for easy I2C integration!。The Alchitry Cu uses the Lattice iCE40 HX FPGA with 7680 logic cells and is supported by the open source tool chain Project IceStorm. The Cu possesses 79 IO pins with eight general purpose LEDs； a 100MHz on-board clock that can be manipulated internally by the FPGA； a USB-C connector to configure and power the board； and a USB to serial interface for data transfer.。By adding stackable expansion boards similar to shields or HATs called "Elements，" the Alchitry Cu is able to expand its own hardware capabilities by adding prototyping spaces， buttons， LEDs， and more!。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 our Learning FPGA Tutorials。Features。Lattice iCE40-HX8K FPGA - 7680 logic elements。79 IO pins(3.3V logic level)。USB-C to configure and power the board。Eight general purpose LEDs。One button(typically used as a reset)。100MHz on-board clock(can be multiplied internally by the FPGA)。Powered with 5V through USB-C port， 0.1" holes， or headers。USB to serial interface for data transfer(up to 12Mbaud)。Qwiic Connector。Dimensions of 65mm×45mm。。Examples。First FPGA Project - Getting Fancy with PWM。External IO and Metastability

。Description。The Alchitry Au is the "gold" standard for FPGA development boards and it's possibly one of the strongest boards of its type on the market. FPGAs， or Field-Programmable Gate Arrays， are an advanced development board type for engineers and hobbyists alike to experience the next step in programming with electronics. The Au continues the trend of more affordable and increasingly powerful FPGA boards arriving each year. This board is a fantastic starting point into the world of FPGAs and the heart of your next project. Finally， now that this board is built by SparkFun， we added a Qwiic connector for easy I2C integration!。The Alchitry Au features a Xilinx Artix 7 XC7A35T-1C FPGA with over 33，000 logic cells and 256MB of DDR3 RAM. The Au offers 102 3.3V logic level IO pins， 20 of which can be switched to 1.8V； Nine differential analog inputs； Eight general purpose LEDs； a 100MHz on-board clock that can be manipulated internally by the FPGA； a USB-C connector to configure and power the board； and a USB to serial interface for data transfer. To make getting started even easier， all Alchitry boards have full Lucid support， a built in library of useful components to use in your project， and a debugger!。By adding stackable expansion boards similar to shields or HATs called "Elements，" the Alchitry Au is able to expand its own hardware capabilities by adding prototyping spaces， buttons， LEDs， and more!。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 our Learning FPGA Tutorials。Features。Artix 7 XC7A35T-1C - 33，280 logic cells。256MB DDR3 RAM。102 IO pins(3.3V logic level， 20 of then can be switched to 1.8V for LVDS)。Nine differential analog inputs(One dedicated， Eight mixed with digital IO)。USB-C to configure and power the board。Eight general purpose LEDs。One button(typically used as a reset)。100MHz on-board clock(can be multiplied internally by the FPGA)。Powered with 5V through USB-C port， 0.1" holes， or headers。USB to serial interface for data transfer(up to 12Mbaud)。Qwiic Connector。Dimensions of 65mm×45mm。。Examples。First FPGA Project - Getting Fancy with PWM。External IO and Metastability