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。Description。The SparkFun Load Cell Amplifier is a small breakout board for the HX711 IC that allows you to easily read load cells to measure weight. By connecting the amplifier to your microcontroller you will be able to read the changes in the resistance of the load cell， and with some calibration you'll be able to get very accurate weight measurements. This can be handy for creating your own industrial scale， process control or simple presence detection.。This version of the SparkFun Load Cell Amplifier features a few changes that you specifically asked for! We have separated the analog and digital supply， as well as added a 3.3uH inductor and a 0.1uF filter capacitor for digital supply. Need even more? Checkout the SparkFun Qwiic Scale. It has all the features of the HX711 but with additional library support， a true I2C interface， and no soldering required!。The HX711 uses a two-wire interface(Clock and Data)for communication. Any microcontroller's GPIO pins should work， and numerous libraries have been written， making it easy to read data from the HX711. Check the hookup guide below for more information.。Load cells use a four-wire Wheatstone bridge configuration to connect to the HX711. These are commonly colored RED， BLK， WHT， GRN and YLW. Each color corresponds to the conventional color coding of load cells：Red(Excitation+ or VCC)。Black(Excitation- or GND)。White(Amplifier-， Signal- or Output-)。Green(A+， S+ or O+)。Yellow(Shield)。The YLW pin acts as an optional input that is not hooked up to the strain gauge but is utilized to ground and shield against outside EMI(electromagnetic interference). Please keep in mind that some load cells might have slight variations in color coding.。Note：Special thanks to Bodge for supplying the Library for the HX711!。Get Started with the HX711 Load Cell Amplifier Guide。Features。Operation Voltage：2.7V--5V。Operation Current：< 1.5mA。Selectable 10SPS or 80SPS output data rate。Simultaneous 50 and 60Hz supply rejection

。Description。The SparkFun MicroMod Update Tool is built to interface with the MicroMod Asset Tracker Carrier Board and also makes it simple to communicate directly with the u-blox SARA-R510M8S module using u-blox's sophisticated m-center cellular evaluation software. If you're familiar with u-center， u-blox's GNSS evaluation software， you'll know how excellent their software is. m-center is every bit as good. Attach a USB-C cable and away you go!。The Update Tool is not a full MicroMod Processor Board， it is much simpler than that. It has a CH340C USB-Serial converter on it which gives you full access to all eight pins of the SARA-R5's UART interface via the Asset Tracker's USB-C connector. Think of it as a bridge from USB to serial.。The Update Tool features eight pairs of Plated Through Hole connections for the UART signals. You can use these to connect directly to the SARA UART using 3.3V signals if you want to. The split pads on the rear of the Tool can be opened to isolate the CH340C completely； the pins nearest the M.2 will link straight to the SARA UART.。Get Started with the MicroMod Update Tool Hookup Guide。Features。CH340C USB-Serial converter。Eight pairs of Plated Through Hole connections with split pad jumper links for：Serial Transmit(TX)。Serial Receive(RX)。Request To Send(RTS)。Clear To Send(CTS)。Data Terminal Ready(DTR)。Data Set Ready(DSR)。Ring Indicator(RI)。Data Carrier Detect(DCD)。LED indicator for：Power(3.3V)

Description。Cherry MX switches are great for building your own keyboards. Whether you are looking to build a full sized 108-key keyboard， your own 10-key， or just a custom input for your computer Cherry MX switches give you that satisfying keyboard cli

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 M1600HCT-P-SMA is unique antenna combining the ability to communicate with the Iridium satellite network while simultaneously receiving L1 GNSS signals(GPS and GLONASS). This makes the M1600HCT the perfect antenna for tracking devices that transmit their position over Iridium. In addition， weighing only 11 grams， the antenna can achieve IP67 when seated against an SMA bulkhead connection(there is a small o-ring built into the base).。This product is designed for applications requiring high quality reception of the Iridium network and is ideal when：the orientation of the unit containing the antenna is random， the unit is used in harsh environments， and/or the antenna is mounted externally and in close proximity to other antennas.。Features。Frequency。GPS(1575 MHz)。GLONASS(1602 MHz)。Iridium(1616 - 1626 MHz)。Polarization：RHCP。Peak Gain：GPS：-3 dBic。GLONASS：0 dBic。Iridum：2.8 dBic。Impedance：50 Ohm。RF Connector：SMA。Dimensions：48mm×18.5mm。Weight：11g

Description。These inserts are great for easy and flexible work holding solutions. You could strategically place a few to hold down material in a jig or fixture， or install in a grid pattern to turn your wasteboard into a threaded table by installing t

Description。These wireless transmitters work with our 315MHz receivers. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only transmitters， they will only work communicating data one-way， you would need two pairs(of different frequencies)to act as a transmitter/receiver pair.。Note：These modules are indiscriminate and will receive a fair amount of noise. Both the transmitter and receiver work at common frequencies and don't have IDs. Therefore， a method of filtering this noise and pairing transmitter and receiver will be necessary. The example code below shows such an example for basic operation. Please refer to the example code and links below for ways to accomplish a robust wireless data link.。Features。315MHz。500ft range(given perfect conditions)。4800bps data rate。5V supply voltage

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。The Raspberry Pi Compute Module 3+ Lite contains the guts of a Raspberry Pi 3 Model B+(the BCM2837 processor and 1GB LPDDR2 RAM). This module allows a designer to leverage the Raspberry Pi hardware and software stack in their own custom systems and form factors. In addition this module has extra IO interfaces over and above what is available on the Raspberry Pi model A/B boards， opening up more options for the designer.。This is all integrated onto a small(67.6mm×31mm)board that fits into a standard DDR2 SODIMM connector. You get the full flexibility of the BCM2837 SoC(which means that many more GPIOs and interfaces are available than with a standard Raspberry Pi)， and designing the Module into a custom system should be relatively straightforward because all the tricky bits have been put onto the Module itself.。The CM3+ Lite product is the same as CM3+ except the eMMC Flash is not fitted， and the SD/eMMC interface pins are available for the user to connect their own SD/eMMC device. Note that the CM3+ is electrically identical and， with the exception of higher CPU z-height， physically identical to the legacy CM3 products.。Note：The CM3+ modules require a software/firmware image dated November 2018 or newer to function correctly.。Features。Broadcom BCM2837B0， Cortex-A53(ARMv8)64-bit SoC @ 1.2GHz。1GB LPDDR2 SDRAM。Operating Supply Voltage：1.8V， 3.3V。Minimum Operating Temperature：-25C。Maximum Operating Temperature：+80C。HDMI， MIPI， USB， and GPIO interfaces on edge connector

Description。With Single-Board Computers(SBCs)on the rise， it is a good idea to have an easy way to interface with them. Operating on a 2.4GHz frequency， the Multimedia Wireless Keyboard possesses a normal-sized key layout， media controls and a multitouch track pad. This keyboard is powered by a built-in 850mAh LiPo battery， providing you with 500--700 hours of use. Even if you don't have a Raspberry Pi， BeagleBone or another SBC， this keyboard can work with smart TVs， mobile devices and full-blown PCs!。The Multimedia Wireless Keyboard can be charged via the attached USB cable， which stores in the same compartment as the wireless USB receiver. The track pad on the wireless keyboard not only features left and right click options， but also a scroll function. Measuring less than an inch thick， this wireless keyboard is an ideal product for on-the-go situations.。Note：The attached USB cable is for charging purposes only.。Features。317.2mm×123.6mm×18.3mm(12.4in×4.8in×0.7in)。System Requirements：HID-Compatible Device。USB Port。Windows 2000， XP， CE， Vista， 7， 8 or Higher。Linux(Debian-3.1， Red Hat-9.0， Ubuntu-8.10， Fedora-7.0)。Android OS

Description。This is a basic 16 character by two line display with a snazzy black background with white characters. This LCD utilizes the extremely common HD44780 parallel interface chipset. Interface code is freely available. This is the same LCD that is included with the SparkFun Inventor's Kit and comes with all the GPIO pins pre-soldered on for quick and easy interfacing.。Includes white LED backlight.。Get Started with the Basic Character LCD Guide。Features。3.15"×1.425"

Description。These wireless receivers work with our 315MHz transmitters. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only receivers， they will only work communicating data one-way， you would need two pairs(of different frequencies)to act as a transmitter/receiver pair.。Note：These modules are indiscriminate and will receive a fair amount of noise. Both the transmitter and receiver work at common frequencies and don't have IDs. Therefore， a method of filtering this noise and pairing transmitter and receiver will be necessary. The example code below shows such an example for basic operation. Please refer to the example code and links below for ways to accomplish a robust wireless data link.。Note：These receivers are almost identical to the RF link 434MHz receiver. SparkFun does everything in our power to make sure you receive the product you requested. However， if you are concerned you may have received the incorrect product you can verify which version receiver this is by running a simple test circuit.。Features。315 MHz。500ft range(given perfect conditions)。4800bps data rate。5V supply voltage

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。These inserts are great for easy and flexible work holding solutions. You could strategically place a few to hold down material in a jig or fixture， or install in a grid pattern to turn your wasteboard into a threaded table by installing these threaded inserts.。Installation is easy， simply create a 9mm pilot hole， then thread the insert into the hole.。Both the inch and metric come in packs of 100 inserts and include a 6mm hex key and 6mm hex driver for installation. The hex driver can be used with a cordless drill for quick installation.。Features。6mm Hex(on both Imperial and Metric versions)。Length：13mm(～1/2")。Maximum Hole Size：9mm(0.354"， Letter T Drill)。1/4-20 thread

。Description。The Compute Module 3+ Development Kit is made for developing industrial applications with CM3+， CM3+/Lite， CM3， CM3 Lite， and CM1.。The Development Kit contains the critical hardware that allows you to design the Compute Module into a custom system， and gives you the freedom to add extra components and place parts exactly where your product needs them.。The kit includes the Compute Module IO(CMIO)board， which is a simple， open-source breakout board into which you can plug a Compute Module. The board hosts 120 GPIO pins， an HDMI port， a USB port， two camera ports， and two display ports.。Note：A separate power supply， such as this Universal Power Supply， is required to power the product(not included in the kit).

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。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。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。The SparkFun MAX31855K Thermocouple Breakout is a simple 14-bit resolution， SPI-compatible， serial interface thermocouple digitizer that makes reading a wide range of temperatures possible. A thermocouple works by taking two wires made of dissimilar metals， connecting them at the two ends， and making a temperature gradient between one end and the other(a 'hot' end and a 'cold' one). Once this is achieved， a voltage potential is formed and current flows. The SparkFun Thermocouple Breakout takes a standard Type-K thermocouple in one end， digitizes the temperature measured and sends that data out the other end via a SPI interface， thereby interpreting the data and translating it for you to read!。With the SparkFun Thermocouple Breakout， the thermocouple's hot junction can be read from -200℃ to +700℃ with an accuracy of ±2℃ while the cold junction， inside the MAX31855K， can only range from -20℃ to +85℃ while maintaining ±2℃ accuracy. The MAX31855K constantly measures the temperature of the cold junction using an internal temperature-sensing diode. The MAX31855K requires a power source from +3.0V to +3.6V(+3.0V nominal)and only draws 1.5mA maximum.。The Thermocouple Breakout is designed to accept a standard thermocouple connector， for convenience and compatibility with probes you may already own. These connectors aren't necessary， and you could solder a thermocouple directly into the through-holes labeled '+' and '-'. If you decide to solder the thermocouple directly to the breakout board， it is recommended that the thermocouple be mounted for strain relief to avoid breaking the thin wires. Notches for a zip-tie or wire wrapping have been provided in the PCB opposite the header for this purpose.。Features。14-bit Resolution。SPI-Compatible， Serial Interface。-200℃ to +700℃ Temperature Reading with ±2℃ Accuracy。3.0V to 3.6V(+3.0V nominal)Required。Accepts Type-K Thermocouple

Description。Normal GPS antennas are optimized for the US based GPS reception which is great but with more and more modules capable of tracking additional constellations(termed GNSS receivers)you're going to need the right antenna! This exceptional GPS/GNSS antenna is designed for both GPS and GLONASS reception. When used in conjunction with the SparkFun GPS ground plate this antenna achieved excellent TTFF and SIV statistics for both GPS and GLONASS constellations. The magnetic mount allows it to be easily mounted to a metal base such as a ground plate or car roof. The antenna is terminated with a 3m cable and standard SMA connector.。We recommend this antenna for RTK use when combined with the ground plate. If you need Beidou reception and additional gain consider the GPS/GNSS embedded antenna.。Features。Dimensions：50x38x17mm。Weight：75g including 3m cable。Frequency Range：1575 - 1610MHz。GPS Center Frequency：1575.42MHz。GLONASS Center Frequency：1602MHz。LNA Voltage：3 to 5VDC。LNA Gain：28dB。LNA Current：10mA。Termination Connector：SMA。Impedance：50Ω。Right hand polarization。Cable Length：3 meter

。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。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。Passive Infrared(PIR)sensors are great for detecting motion in a small area around the sensor. The 170μA SparkFun EKMC4607112K PIR Breakout is a simple board equipped with an EKM-series PIR sensor from Panasonic(R). The EKM-series PIR sensors are optimized for small movements to offer motion-sensing options for continuously powered applications.。PIR sensors do not return specific distance data but instead monitor for IR light coming from objects in their field of view and will activate their signal when motion is detected in their sensing area， making them perfect for applications such as turning devices on automatically when motion is detected. Applications include home and building automation for energy saving， automated on/off lighting control， security， appliances， and IoT.。Panasonic's low-profile PIR motion sensors(10.9mm versus standard 14.4mm height offer space savings for constrained designs)consist of a lens to create various detection zones， an optical filter to block non-infrared light， pyroelectric sensing elements， electromagnetic shielding to all circuitry， and an impedance converter to get an electrical signal. This PIR sensor offers digital output across 32 zones at 5m detection distance with 90°×90° detection area.。Note：The sensitivity of passive infrared sensors is influenced by environmental conditions， so a performance evaluation test under representative conditions is recommended.。Get Started with the SparkFun PIR Breakout Guide。Features。Operating Voltage：2.3。-。4.0V。170 μA。standby current consumption。Lens diameter - 10.4mm。Lens Height - 10.9mm。5m detection distance。90°×90°(±45°)detection area

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。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 9DoF IMU Breakout incorporates all the amazing features of Invensense's ICM-20948 into a Qwiic-enabled breakout board complete with a logic shifter and broken out GPIO pins for all your motion sensing needs. The ICM-20948 itself is an extremely low powered， I2C and SPI enabled 9-axis motion tracking device that is ideally suited for smartphones， tablets， wearable sensors， and IoT applications. 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.。In addition to the 3-Axis Gyroscope with four selectable ranges， 3-Axis Accelerometer， again with four selectable ranges， and 3-axis magnetometer with an FSR to ±4900μT， the ICM-20948 also includes a Digital Motion Processor that offloads the computation of motion sensing algorithms from the detectors， allowing optimal performance of the sensors. We've also broken out all the ICM-20948 pin functionality to GPIO and labeled them I2C on the front， SPI on the back for ease of identification.。Note：The I2C address of the ICM-20948 is 0x69 and is jumper selectable to 0x68. A multiplexer/Mux is required to communicate to multiple ICM-20948 sensors on a single bus. If you need to use more than one ICM-20948 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.。Need a custom board? This component can be found in SparkFun's A La Carte board builder. You can have a custom design fabricated with this component - and your choice of hundreds of other sensors， actuators and wireless devices - delivered to you in just a few weeks.。Get Started with the SparkFun ICM-20948 9DoF IMU Guide。Features。1.95 V to 3.6 V supply voltage。Triple-axis MEMS gyroscope with user-programmable full-scale range of ±250 dps， ±500 dps， ±1000 dps， and ±2000 dps。Triple-axis MEMS accelerometer with programmable full scale range of ±2g， ±4g， ±8g， and ±16g。Triple-axis silicon monolithic Hall-effect magnetic sensor with full scale measurement range to ±4900 μT。I2C at up to 100 kHz(standard-mode)or up to 400 kHz(fast-mode)or SPI at up to 7 MHz for communicationwith registers。On-board digital motion processor(DMP)。Digital-output temperature sensor。2x Qwiic Connection Ports。I2C Address：0x69(0x68 with Jumper)。。Documents。Schematic。Eagle Files。Hookup Guide。Datasheet(ICM-20948)。Arduino Library。Python Support(Qwiic_Py)。GitHub Hardware Repo

Description。The SparkFun Pulse Oximeter and Heart Rate Sensor is an I2C based biometric sensor， utilizing two chips from Maxim Integrated：the MAX32664 Biometric Sensor Hub and the MAX30101 Pulse Oximetry and Heart Rate Module. While the latter does all the sensing， the former is an incredibly small and fast Cortex M4 processor that handles all of the algorithmic calculations， digital filtering， pressure/position compensation， advanced R-wave detection， and automatic gain control. We've provided a Qwiic connector to easily connect to the I2C data lines but you will also need to connect to two additional lines. This board is very small， measuring at 1in×0.5in(25.4mm×12.7mm)， which means it will fit nicely on your finger without all the bulk.。The MAX30101 does all the sensing by utilizing its internal LEDs to bounce light off the arteries and arterioles in your finger's subcutaneous layer and sensing how much light is absorbed with its photodetectors. This is known as photoplethysmography. This data is passed onto and analyzed by the MAX32664 which applies its algorithms to determine heart rate and blood oxygen saturation(SpO2). SpO2 results are reported as the percentage of hemoglobin that is saturated with oxygen. It also provides useful information such as the sensor's confidence in its reporting as well as a handy finger detection data point. To get the most out of the sensor we've written an Arduino Library to make it easy to adjust all the possible configurations.。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 Pulse Oximeter and Heart Rate Monitor Hookup Guide。Features。SparkFun Pulse Oximeter and Heart Rate Sensor。MAX30101 and MAX32664 sensor and sensor hub。Qwiic connectors for power and I2C interface。I2C Address：0x55。MAX30101 - Pulse Oximeter and Heart-Rate Sensor。Heart-Rate Monitor and Pulse Oximeter Sensor in LED Reflective Solution。Integrated Cover Glass for Optimal， Robust Performance。Ultra-Low Power Operation for Mobile Devices。Fast Data Output Capability。Robust Motion Artifact Resilience。MAX32664 - Ultra-Low Power Biometric Sensor Hub。Biometric Sensor Hub Solution。Finger-Based Algorithms Measure Pulse Heart Rate and Pulse Blood Oxygenation Saturation(SpO2)。Both Raw and processed data are available。Basic Peripheral mix optimizes size and performance

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 SparkFun RTK Surveyor is an easy to use GNSS receiver for centimeter-level positioning. Perfect for surveying， 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 Surveyor can also be used as a base station. With the flick of a switch， two RTK Surveyors 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 Surveyor with their choice of GIS application on a phone or tablet. The built in battery allows field use for up to four hours and is compatible with common USB battery banks.。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 2nd RTK Surveyor 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.。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 setup a very precise absolute correction source.。Two cables are provided with the RTK Surveyor allowing a user to plug on 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 Surveyor 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 Surveyor 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。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 1000mAh with 500mA charging。Radio Port：3.3V TTL Serial(57600bps RTCM TX/RX)。Data Port：3.3V TTL Serial(115200bps NMEA)。Weight：132g(entire device including battery)。Dimensions：118mm×79mm×30mm(4.7in×3.1in×1.2in)。1x Qwiic Connector。1x microSD Socket for optional logging。Changes：This version(which replaces SPX-17369)uses a reinforced edge mount SMA connector for better resiliency when a fixed 'stub' antenna is used.