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DescriptionThese 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.Features315 MHz500ft range(given perfect conditions)4800bps data rate5V supply voltage

DescriptionThe Raspberry Pi Build HAT is an add-on board that connects to the 40-pin GPIO header of your Raspberry Pi， which was designed in collaboration with LEGO(R)Education to make it easy to control LEGO(R)Technic(TM)motors and sensors with Rasp

DescriptionThe 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 GuideFeaturesCH340C USB-Serial converterEight 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)

DescriptionLeveraging the ultra powerful Artemis Module， the SparkFun MicroMod Artemis Processor is the brain board of your dreams. With a Cortex-M4F with BLE 5.0 running up to 96MHz and with as low power as 6uA per MHz(less than 5mW)， the M.2 MicroMod connector allows you to plug in a MicroMod Carrier Board with any number of peripherals. Let's have a look at what this processor board has to offer! If you need Machine Learning capabilities， Bluetooth， I2C functionality to connect to all our amazing Qwiic boards， and more the Artemis Processor is the perfect choice for your MicroMod Carrier Board.At the heart of SparkFun's Artemis Module is Ambiq Micro's Apollo3 processor， whose ultra-efficient ARM Cortex-M4F processor is spec'd to run TensorFlow Lite using only 6uA/MHz. We've routed two I2C buses， eight GPIO， dedicated digital， analog， and PWM pins， multiple SPI as well as QuadSPI， and Bluetooth to boot. You really can't go wrong with this processor. Grab one today， pick up a compatible carrier board， and get hacking!MicroMod is a modular interface ecosystem that connects a microcontroller "processor board" to various "carrier board" peripherals. Utilizing the M.2 standard， the MicroMod standard is designed to easily swap out processors on the fly. Pair a specialized carrier board for the project you need with your choice of compatible processor!Get Started with the MicroMod Artemis Processor GuideFeaturesArtemis General Features1M Flash / 384k RAM48MHz / 96MHz turbo available6uA/MHz(operates less than 5mW at full operation)48 GPIO - all interrupt capable31 PWM channelsBuilt in BLE radio and antenna10 ADC channels with 14-bit precision with up to 2.67 million samples per second effective continuous， multi-slot sampling rate2 channel differential ADC2 UARTs6 I2C buses6 SPI buses2/4/8-bit SPI busPDM interfaceI2S InterfaceSecure 'Smart Card' interfaceFCC/IC/CE Certified(ID Number 2ASW8-ART3MIS)Specific Peripherals made available on MicroMod Artemis：1x USB dedicated for programming and debug1x UART with flow control2x I2C1x SPI1x Quad-SPI8x Fast GPIO2x Digital Pins2x Analog Pins2x PWM1x Differential ADC pairStatus LEDVIN Level ADCAdditional peripherals are available but are shared on dedicated MicroMod pins.

DescriptionArduino 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!FeaturesATmega2560 microcontrollerInput voltage - 7-12V54 Digital I/O Pins(14 PWM outputs)16 Analog Inputs256k Flash Memory16Mhz Clock Speed

DescriptionThe great thing about open source is that while SparkFun has designed our own MicroMod carrier boards， that does not stop you from creating your very own MicroMod carrier board. The MicroMod DIY Carrier Kit includes five M.2 connectors(4.2mm height)， screws， and standoffs so that you can get all the special parts you may need to make your own carrier board.MicroMod uses the common M.2 connector. This is the same connector found on modern motherboards and laptops. There are various locations for the plastic 'key' on the M.2 connector to prevent a user from inserting an incompatible device. The MicroMod standard uses the 'E' key and further modifies the M.2 standard by moving the mounting screw 4mm to the side. The 'E' key is fairly common so a user could insert a M.2 compatible Wifi module but because the screw mount doesn't align， the user would not be able to secure an incompatible device into a MicroMod carrier board.MicroMod is a modular interface ecosystem that connects a microcontroller "processor board" to various "carrier board" peripherals. Utilizing the M.2 standard， the MicroMod standard is designed to easily swap out processors on the fly. Pair a specialized carrier board for the project you need with your choice of compatible processor!

DescriptionThe SparkFun Qwiic Dual Solid State Relay is a power delivery board that allows users to switch two AC loads from a low power microcontroller using the SparkFun Qwiic connect system. The board features two 25A/250VAC solid state relays that utilize the Zero Cross Trigger method so you can toggle two loads on a 60Hz AC carrier signal on and off up to 120 times per second!An ATTiny84 acts as the "brain" of the SparkFun Qwiic Dual Solid Relay to accept I2C commands to toggle the two relays as well as a few other special commands. The I2C address of the ATtiny84A is software configurable so， if you have a seriously big power project in mind， you could daisy chain over 100 Qwiic Dual Solid State Relays.Messing with such high voltage is dangerous! We've included many safety precautions onto the PCB including ground isolation between the relay and other circuitry and a milled out area isolating each side of AC. However， with all the safety precautions included with the SparkFun Qwiic Dual Solid State Relay， this is still a power accessory for users who are experienced around， and knowledgeable about high AC voltage. If you're not comfortable with handling AC voltage in this way， you may want to check out the IoT Power Relay instead.Note：The relays are rated for a max of 25A with forced air cooling. If you do not have forced air cooling， 10A max through the relays is recommended.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 Dual Solid State Relay GuideFeaturesOperating Voltage：2.5-3.6V(3.3V recommended)I2C Address：0x0A(Default)0x0B(Alternate via jumper select)Load Voltage Range：12-280VACMax Current(Through Relay)：25A(240VAC with forced air cooling)Zero Cross TriggerNormally Open Circuit Only2x Qwiic Connector

DescriptionThe 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.

DescriptionThese wireless receivers work with our 434MHz 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 communica

DescriptionThe full-color LilyPad Sewable Electronics Kit Guidebook contains step-by-step instructions for creating four interactive projects from the materials contained in the kit. Examples and circuits are provided and explained. The manual also includes a glossary and troubleshooting tips. Once you make your way through all of the projects， you will have a much better grasp on e-textiles!Note：This is just the manual for the LilyPad Sewable Electronics Kit. The kit itself or the individual parts used in this book will need to be purchased separately.ExamplesProject 1：Glowing PinProject 2：Illuminated MaskProject 3：Light-Up PlushProject 4：Night-Light Pennant

DescriptionRobots are fun， and the micro：bit is the perfect controller for learning how to build and program robots! Combining the micro：bit with the SparkFun moto：bit carrier board creates a flexible， low-cost， Qwiic-enabled robotics platform for robot enthusiasts young and old! With the SparkFun micro：bot kit you will be able to create simple robots quickly without spending hours learning how to build and program your bot.Inside each micro：bot kit you will find all the components required to build your micro：bit into a robotics powerhouse； the only part that's not included is the micro：bit itself. Simply add your own micro：bit to the provided moto：bit， assemble the kit， and you will be ready to start moving. The SparkFun micro：bot kit is a great way to get your feet wet in the world of robotics.The kit does not require any soldering and is recommended for anyone curious about robotics or the micro：bit platform.Note：The SparkFun micro：bot kit doesNOTinclude a micro：bit board. The micro：bit board will need to be purchased separately.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!Get started with the micro：bot kit Guide

DescriptionUSB-C is quickly becoming more and more prominent in the maker community because， let's be honest， who likes trying three times to insert USB into a port? This is a 16-pin， female， USB Type C connector that is commonly found in smart phones， laptops， and other newer electronics. Each USB-C connector will require PTH soldering to secure it to your board and SMD soldering to connect each of the 16 control pins.If you are looking for an easier way to hook up a USB-C connector to your project， we do offer a breakout with 0.1" spaced， breadboard friendly pins.

DescriptionWe 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 GuideFeaturesWhite displayOperating Voltage：3.3VIntegrated RC oscillatorMaximum display segment numbers：128 patterns13×3 matrix key scan circuit16-step dimming circuitI2C Addresses：0x70(0x71， 0x72， 0x73)2x Qwiic connectors2x Wall Mounting Points

DescriptionThe 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.FeaturesGearing Option：100：1Peak Power Point：40N @ 6mm/sPeak Efficiency Point：20N @ 8mm/sMax Speed(no load)：10mm/sMax Force(lifted)：50NMax Side Load：10NBack Drive Force：35NStroke：20 mmInput Voltage：6 VDCStall Current：550mA @ 6VMass：22gOperating Temperature -10℃ to +50℃Positional Repeatability：±0.1mmMechanical Backlash：0.25 mmAudible Noise：55dB @ 45cmIngress Protection：IP-54Maximum Duty Cycle：20%PWM(Servo)signal：Fully retracted：2.0ms @ 50HzFully extended：1.0ms @ 50Hz

DescriptionThe 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 isNOT supported on Windows 7/8due 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

DescriptionThese wireless transmitters work with our 434MHz 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 commun

DescriptionThe SparkFun controller：bit is a fun-filled "carrier" board for the micro：bit that， when combined with the micro：bit， provides you with a fully functional controller system. Designed in a similar form factor to the classic Nintendo cont

DescriptionWith a 32-bit ARM Cortex-M4F MCU， the SparkFun MicroMod SAMD51 Processor Board is one powerful microcontroller packaged on a small board! The board provides you with an economical and easy to use development platform if you're needing mor

DescriptionOne ruler to rule them all. This is a basic 12 inch ruler， but made from a PCB. We have included a lots of useful information on each side of the ruler that you might use on a daily basis including Wire Gauge holes， transistor diagrams， common fractions， Roman numerals， and metric to imperial conversions. Most importantly， the ruler provides you with a straight line and centimeter markings one side and inch markings on the other side.You'll also find a small protractor in the middle for all your angle measurement needs. While we figured you have a fairly good idea how to use a ruler we do have a tutorial to explain all the information you'll see!Get Started with the How to use a Ruler GuideFeatures12 inch PCB ruler with markings down to 0.05" or 1/32"30.48 cm PCB ruler with markings down to 0.1mmElectrical Equations such as Ohm's Law and Parallel ResistorsKeyboard Alt CodesColor WavelengthsProtractorMetric Prefix Summary ChartMetric conversionsMorse CodeTransistor DiagramsRoman NumeralsFraction SummaryWire Guage ChartTap and Drill ChartSize：12"x 1.5"

DescriptionThe MicroMod Qwiic Carrier Board can be used to rapidly prototype with other Qwiic devices. The MicroMod M.2 socket provides users the freedom to experiment with any processor board in the MicroMod ecosystem. This board also features two Qwiic connectors and four 4-40 screw inserts to connect and mount Qwiic devices.This version of the SparkFun MicroMod Qwiic Carrier Board features a single port for our standard 1in. by 1in. Qwiic Breakouts. However， you aren't beholden to attaching just one Qwiic breakout since you are able to stack the boards on top of each other， allowing you to hook up a full circuit of Qwiic sensors and accessories to fully utilize your next project!MicroMod is a modular interface ecosystem that connects a microcontroller "processor board" to various "carrier board" peripherals. Utilizing the M.2 standard， the MicroMod standard is designed to easily swap out processors on the fly. Pair a specialized carrier board for the project you need with your choice of compatible processor!Get Started With the MicroMod Qwiic Carrier Board GuideFeaturesM.2 MicroMod(Processor Board)ConnectorUSB-C Connector3.3V 1A Voltage RegulatorQwiic ConnectorsBoot/Reset ButtonsCharge CircuitFour 4-40 Inserts

DescriptionThe SparkFun I2S Audio Breakout board uses the MAX98357A digital to analog converter(DAC)， which converts I2S(not be confused with I2C)audio to an analog signal to drive speakers. The I2S Audio Breakout converts the digital audio signals using the I2S standard to an analog signal and amplifies the signal using a class D amplifier which can deliver up to 3.2W of power into a 4Ω load. The board can be configured to output only the left channel audio， right channel， or both.The SparkFun I2S Audio Breakout board is fairly simple， requiring only a few pin connections to get it up and working. By default the board is configured in "mono" operation， meaning the left and right signals are combined together to drive a single speaker. If you want a separate speaker for the left and right audio channels you'll need to cut the mono jumper. In addition to being able to select the audio channel output， the gain can also be configured in a few ways. The gain of the amplifier can be configured from as low as +3dB to as high as +15dB. While the channel selection can be configured on board， the gain however is controlled externally using the gain pin. By default， the board is configured for +9dB， but can be easily changed!Get Started with the SparkFun I2S Audio Breakout GuideFeaturesSupply Voltage Range：2.5V - 5.5V.Output Power：3.2W into 4Ω at 5V.Output Channel Selection：Left， Right， or Left/2 + Right/2(Default).Sample Rate：8kHz - 96kHz.Sample Resolution：16/32 bit.Quiescent Current：2.4mA.Filterless Class D OutputsNo MCLK RequiredClick and Pop ReductionShort-Circuit and Thermal Protection.

DescriptionThe Raspberry Pi Pico is a low-cost， high-performance microcontroller board with flexible digital interfaces. It feature the RP2040 which marks Raspberry Pi's first microcontroller designed in-house. Pico provides minimal(yet flexible)exter

DescriptionThe SparkFun MicroMod Data Logging Board offers a highly customizable， low-power data logging platform using the MicroMod system allowing you to choose your own Processor to pair with the Carrier Board. The Data Logging Carrier Board breaks out connections for I2C via a Qwiic connector or standard 0.1"-spaced PTH pins along with SPI and serial UART connections for logging data from peripheral devices using those communication protocols.The Data Logging Carrier Board allows you to control power to both the Qwiic connector on the board and a dedicated 3.3V power rail for non-Qwiic peripherals so you can pick and choose when to power the peripherals you are monitoring the data from. It also features a charging circuit for single-cell Lithium-ion batteries along with a separate RTC battery-backup circuit to maintain power to a real-time clock circuit on your Processor Board.MicroMod is a modular interface ecosystem that connects a microcontroller "processor board" to various "carrier board" peripherals. Utilizing the M.2 standard， the MicroMod standard is designed to easily swap out processors on the fly. Pair a specialized carrier board for the project you need with your choice of compatible processor!Get Started with the MicroMod Data Logging Carrier Board GuideFeaturesM.2 MicroMod ConnectormicroSD socketUSB-C Connector3.3V 1A Voltage RegulatorQwiic ConnectorBoot/Reset ButtonsRTC Backup Battery Charge CircuitIndependent 3.3V regulators for Qwiic bus and peripheral add-onsControlled by digital pins on Processor Board to enable low power sleep modesPhillips #0 M2.5x3mm screw included

DescriptionThese 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.Features315MHz500ft range(given perfect conditions)4800bps data rate5V supply voltage

DescriptionWhen you're working with e-textiles， you have a tendency to collect a lot of small parts：LilyPad boards， bobbins， needles...the tools of the trade. Why not pick up a sturdy box to keep your bits and pieces off the floor? This large LilyPad-branded box is made from rigid cardboard printed with a fancy tone-on-tone pattern， label space and the LilyPad logo. There are even magnetic closures embedded in the lid.We like this box because it's rigid enough to throw in a sewing bag and also looks good on a workbench or makerspace. With an inside dimension of 2 inches deep， it's big enough for batteries， fabric swatches and whatever small parts you have floating around. It also makes a great gift box if you're thinking about getting someone the gift of LilyPad!FeaturesDimensions：10.0"×6.3"×2.3"

DescriptionThe LilyPad E-Sewing ProtoSnap is a great way to explore how buttons and switches behave in simple e-sewing circuits before crafting your project. Like other LilyPad ProtoSnap series boards， the individual pieces of the board are pre-wired --- allowing you to try out the function of the circuit before sewing. There is no programming required to use this ProtoSnap， and it can be used right away!The E-Sewing ProtoSnap includes three white LilyPad LEDs：two connected to a LilyPad Slide Switch and one connected to a LilyPad Button Board. A LilyPad Coin Cell Battery Holder with a CR2032 coin cell battery provides all the power you need for the circuit. All you need to do is design how you want your project to be laid out， and then snap everything apart!Note：A portion of this sale is given back to Dr. Leah Buechley for continued development and education in e-textiles.Note：Due to the requirements of shipping the included battery， orders may take longer to process and therefore do not qualify for same-day shipping. Additionally， these batteries cannot be shipped via Ground or Economy methods to Alaska or Hawaii. Sorry for any inconvenience this may cause.Get Started with the LilyPad E-Sewing ProtoSnap Guide

DescriptionThe MicroMod Qwiic Carrier Board can be used to rapidly prototype with other Qwiic devices. The MicroMod M.2 socket provides users the freedom to experiment with any processor board in the MicroMod ecosystem. This board also features two Qwiic connectors and eight 4-40 screw inserts to connect and mount Qwiic devices.This version of the SparkFun MicroMod Qwiic Carrier Board features two ports for our standard 1in. by 1in. Qwiic breakouts. However， you aren't beholden to attaching just a duo of Qwiic breakouts since you are able to stack the boards on top of each other， allowing you to hook up a full circuit of Qwiic sensors and accessories to fully utilize your next project!MicroMod is a modular interface ecosystem that connects a microcontroller "processor board" to various "carrier board" peripherals. Utilizing the M.2 standard， the MicroMod standard is designed to easily swap out processors on the fly. Pair a specialized carrier board for the project you need with your choice of compatible processor!Get Started With the MicroMod Qwiic Carrier Board GuideFeaturesM.2 MicroMod(Processor Board)ConnectorUSB-C Connector3.3V 1A Voltage RegulatorQwiic ConnectorsBoot/Reset ButtonsCharge CircuitEight 4-40 Inserts

DescriptionButtons 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 GuideFeatures12mm Green LED Button rated for 50mABuilt in LED can be configured for your desired level of blinkiness!Each button has configurable I2C addressConfigurable interrupts check out our guide here!FIFO queueDon't like the color green? Check out the SparkFun Qwiic Button Breakout and add another colored button!Red LED Tactile ButtonBlue LED Tactile ButtonGreen LED Tactile ButtonWhite LED Tactile Button

DescriptionThe SparkFun MicroMod Environmental Function Board adds additional sensing options to the MicroMod Processor Boards. This Function Board includes three sensors to monitor air quality(SGP40)， humidity temperature(SHTC3)， and CO2 concentrations(STC31)in your indoor environment. To make it even easier to use， all communication is over the MicroMod's I2C bus!The SGP40 measures the quality of the air in your room or house. The SGP40 uses a metal oxide(MOx)sensor with a temperature controlled micro hotplate and provides a humidity-compensated volatile organic compound(VOC)based indoor air quality signal. Both the sensing element and VOC Algorithm feature an unmatched robustness against contaminating gases present in real world applications enabling a unique long term stability as well as low drift and device to device variation.The SHTC3 is a highly accurate digital humidity and temperature sensor. The SHTC3 uses a capacitive humidity sensor with a relative humidity measurement range of 0 to 100% RH and bandgap temperature sensor with a temperature measurement range of -40℃ to 125℃. The SHTC3 builds on the success of their SHTC1 sensor with higher accuracy(±2% RH， ±0.2℃)than its predecessor， enabling greater flexibility.The STC31 measures CO2 concentrations based on thermal conductivity and has two CO2 measurement ranges：0 to 25 vol%； and 0 to 100 vol%. The measurement repeatability is 0.2 vol%， with a stability of 0.025 vol% / ℃. The measurement accuracy depends on the measurement range：0.5 vol% + 3% measured value； 1 vol% + 3% measured value. Using measurements from the SHTC3， the STC31 is able to provide humidity-compensated measurements together with improved temperature compensation. The STC31 can compensate for atmospheric pressure too - which is handy if， like us， you're up in the mountains!The outstanding performance of these three sensors is based on Sensirion's patented CMOSens(R)technology， which combines the sensor element， signal processing， and digital calibration on a small CMOS chip. The well-proven CMOS technology is perfectly suited for high-quality mass production and is the ideal choice for demanding and cost-sensitive OEM applications.Utilizing our handy M.2 MicroMod connector， no soldering is required to connect it to your system. Simply match up the key on your processor and function board's beveled edge connector to their respective key on the M.2 connector， then secure them to the main board with screws. The MicroMod Environmental Function Board can then be read via the I2C port. The board is equipped with the AP2112 3.3V voltage regulator， I2C pull-up resistors， power LED， jumper to disable the LED， and jumpers for alternative STC31 addresses.Note：A MicroMod Processor and Main Board are not included with this MicroMod Environmental Function Board. These boards will need to be purchased separately.MicroMod is a modular interface ecosystem that connects a microcontroller "processor board" to various "carrier board" peripherals. Utilizing the M.2 standard， the MicroMod standard is designed to easily swap out processors and function boards on the fly. Pair a specialized carrier board for the project you need with your choice of compatible processor!Get Started with the MicroMod Environmental Function BoardFeaturesInput voltage range2.5V to 6.0VTyp.5Vvia Main Board's USB connectorTyp.～3.7V to 4.2Vvia Main Board's LiPo battery ConnectorI/O voltage3.3VAP2112 3.3V voltage regulator(rated 600mA)Power LEDI2C pull-up resistorsSensirion SGP40 Air Quality SensorUses I2C interfaceAddress：0x59(default)Operating voltage range1.7V to 3.6V(Typ.3.3V)Operating temperature range-20℃ to +55℃Typical current consumption2.6mAduring continuous operation(at 3.3V)34μAwhen idle(heater off)Output signalDigital raw value(SRAW)：0 - 65535 ticksDigital processed value(VOC Index)：0 - 500 VOC index pointsSwitch-on behaviorTime until reliably detecting VOC events：<60sTime until specifications are met：<1hRecommended sampling intervalVOC Index：1sSRAW：0.5s - 10s(Typ. 1s)Sensirion SHTC3 Humidity and Temperature SensorUses I2C interfaceAddress：0x70(default， non-configurable)Operating voltage range1.62V - 3.6V(Typ.3.3V)Operating temperature range-40℃ to +125 ℃Relative HumidityMeasurement range：0% to 100%Typical accuracy：±2 %RHResolution：0.01 %RHTemperatureMeasurement range：-40℃ to +125 ℃Typical accuracy：±0.2 ℃Resolution：0.01 ℃Typical current consumption(varies based on mode)4.9μA to 430μA(Normal Mode)0.5μA to 270μA(Low Power Mode)Allows the STC31 to compensate for humidity and temperatureSensirion STC31 CO2 SensorUses I2C interfaceAddresses：0x29(default)， 0x2A， 0x2B， 0x2COperating voltage range2.7V to 5.5V(Typ.3.3V)Operating temperature range-20 ℃ to +85 ℃Calibrated for CO2 in N2 and CO2 in airMeasurement ranges0 to 25 vol% in N20 to 100 vol% in airAccuracy0.5 vol% + 3% measured value in N21 vol% + 3% measured value in airConcentration and temperature resolution：16-bitRepeatability：0.2 vol%Temperature stability：0.025 vol% / ℃Start-up time：14 msThermal conductivity sensor provides calibrated gas concentration and temperature outputJumpersPWR LEDI2C pull-up resistorsSTC31 address selectionNote：The I2C addresses that are reserved for each sensor is 0x59(SGP40)， 0x70(SHTC3)， 0x29(STC31). A multiplexer/Mux is required to communicate to multiple SHTC3 sensors on a single bus. The SHTC3 uses the same address as the Qwiic Mux(0x70). For advanced users that are using multiple SHTC3's with the Qwiic Mux， you will need to adjust the Qwiic Mux's default address.

DescriptionAccess all the pins(i.e. ATP)of the MicroMod Processor Boards with the SparkFun MicroMod ATP Carrier Board! This board breaks out the MicroMod Processor Board's pins on the M.2 connector to 0.1" spaced female headers and PTH pads on the edge of the board. This Carrier Board is great if you're interested in testing out different MicroMod Processor Boards for your application.A modern USB-C connector makes programming easy. In addition to the pins broken out， two separate Qwiic-enabled I2C ports allow you to easily daisy chain Qwiic-enabled devices. We've exposed the SWD pins for more advanced users who prefer to use the power and speed of professional tools. A USB-A connector is provided for Processor Boards that have USB Host support. A backup battery is provided for processor boards with RTC. If you need a "lot" of GPIO with a simple-to-program， ready for market module， the ATP is the fix you need. We've even added a convenient jumper to measure the current consumption for low power testing.MicroMod is a modular interface ecosystem that connects a microcontroller "processor board" to various "carrier board" peripherals. Utilizing the M.2 standard， the MicroMod standard is designed to easily swap out processors on the fly. Pair a specialized carrier board for the project you need with your choice of compatible processor!Get Started with the MicroMod ATP Carrier Board GuideFeaturesM.2 ConnectorOperating Voltage Range～3.3V to 6.0V(via VIN to AP7361C 3.3V Voltage Regulator)3.3V(via 3V3)Ports [1]1x USB type C1x USB type A Host2x Qwiic Enabled I2C1x CAN1x I2S2x SPI2x UARTs2x Dedicated Analog Pins2x Dedicated PWM Pins2x Dedicated Digital Pins12x General Purpose Input Output Pins1x SWD 2x5 header1mAh battery backup for RTCButtonsResetBootLEDsPower3.3VPhillips #0 M2.5x3mm screw included[1] Note：Depending on the design of the Processor Board， not all the pins may be accessible.

DescriptionThe SparkFun TSH82 Configurable OpAmp Board was designed to give you the best combination of performance and flexibility that we could achieve by giving you two gain stages， each one independently accessible on the header pins. Each stage is natively configured as an inverting amplifier that can also be strung together to expand the capabilities of the TSH82 from STMicroelectronics. With the use of the jumpers on the back of the board， you can configure each stage for non-inverting operation， differential input， and DC input coupling.Electrically speaking， both stages on this board are identical. The default configuration is inverting with a gain of -4.7 with a bandwidth of almost 10MHz. Input signals are AC coupled， possess an input impedance of 10K with a low frequency cutoff of 15.9Hz. Outputs are also DC coupled， so don't forget to add a capacitor to the output if you're running a single-ended supply and need to strip out the DC component. The board will also operate with a single-ended DC power supply of 4.5V to 12V， or a bipolar supply from +/-2.25V to +/-6V.On the back of the board you'll find 10 solder jumpers that can be used to change the board's performance， but nothing there needs to be changed to use it in it's default state.Get Started With the Configurable OpAmp Board Guide

DescriptionThe SparkFun Line Follower Array is a long board consisting of eight IR sensors that have been configured to read as digital bits! We have designed the SparkFun Line Follower Arrays to follow a dark line of about 3/4 inch width or smaller(spray paint or electrical tape)on a light background. Each array features visible LEDs that point upward when the board is attached(properly)so you can see what the robot sees， brightness control right on the board， and an I2C interface for reading and power control. Here at SparkFun， the RedBot Shadow Chassis was used as a test platform but really this was designed as an add-on for almost any bot.The line follower functions by taking an 8-bit reading of reflectance for use with following lines or reading dark/light patterns and can see from about 1/4 to 3/4 inches away. The IR brightness control and indicator can be adjusted with the on-board potentiometer and is capable of showing you the strength of the IR LEDs. Illumination can be turned on and off with software to conserve power， or left on all the time for faster readings. The SparkFun Line Follower Array requires 5V of power with a supply current range of 25-185mA with strobing disabled and 16-160mA with it enabled. Additionally we have added six mounting holes to the line follower with the two inner holes designed to fit our Shadow Chassis while the other four are general purpose.Note：As you know our Sun emits quite a bit of infrared light， making the SparkFun Line Follower Array much less effective in direct sunlight. Plan your projects accordingly!Features8 sensor eyes(QRE1113， like in our line sensor breakout)I2C interfaceAdjust IR brightness on the fly with a knobSwitch IR on and off with softwareSwitch visual indicators on and off with softwareInvert dark/light sight with softwareBased on the SX1509 I/O expander

DescriptionThis is the FemtoBuck， a small-size single-output constant current LED driver. Each FemtoBuck has the capability to dim a single high-power channel of LEDs from 0-350mA at up to 36V while the dimming control can be either accessed via PWM or analog signal from 0-2.5V. This board is based off of the PicoBuck LED Driver， developed in collaboration with Ethan Zonca， except instead of blending three different LEDs on three different channels the FemtoBuck controls just one.For the FemtoBuck， we've increased the voltage ratings on the parts to allow the input voltage to cover the full 36V range of the AL8805 driver. Since the FemtoBuck is a constant current driver， the current drawn from the supply will drop as supply voltage rises. In general， efficiency of the FemtoBuck is around 95%， depending on the input voltage. On board each FemtoBuck you will find two inputs for both power input and dimming control pins and an area to install a 3.5mm screw terminal. Finally at either side of the board you will find small indents or "ears" which will allow you to use a zip tie to secure the wires to the board after soldering them down. This version of the FemtoBuck is equipped with a small solder jumper that can be closed with a glob of solder to double the output current from 330mA to 660mA.

DescriptionThe HM01B0 from Himax Imaging is an ultra low power CMOS Monochrome Image Sensor that enables the integration of an "Always On" camera for computer vision applications such as gestures， intelligent ambient light and proximity sensing， tracking and object identification. The sensor allows the sensor to consume very low power of <2mW at QVGA 30FPS. This low power consumption and vision applications camera comes with a ribbon cable that mates to the camera connector populated on the following products：MicroMod Machine Learning Carrier BoardArtemis Development KitEdge Development Board - Apollo3 BlueThe HM01B0 contains 320×320 pixel resolution and supports a 320×240 window mode which can be readout at a maximum frame rate of 60FPS， and a 2×2 monochrome binning mode with a maximum frame rate of 120FPS. The video data is transferred over a configurable 1bit， 4bit or 8bit interface with support for frame and line synchronization. The sensor integrates black level calibration circuit， automatic exposure and gain control loop， self-oscillator and motion detection circuit with interrupt output to reduce host computation and commands to the sensor to optimize the system power consumption.FeaturesImage SensorUltra Low Power Image Sensor(ULPIS)designed for Always On vision devices and applicationsHigh sensitivity 3.6μ BrightSenseTM pixel technology320×320 active pixel resolution with support for QVGA window， vertical flip and horizontal mirror readoutProgrammable 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 avoidanceFlexible 1bit， 4bit and 8bit video data interface with video frame and line syncMotion Detection circuit with programmable ROI and detection threshold with digital output to serve as an interruptOn-chip self oscillatorI2C 2-wire serial interface for register accessHigh CRA for low profile module designSensor ParametersActive Pixel Array 320×320Pixel Size 3.6 μm×3.6 μmFull Image Area 1152 μm×1152 μmDiagonal(Optical Format)1.63 mm(1/11″)Scan Mode：ProgressiveShutter Type：Electronic Rolling ShutterFrame Rate MAX 51 fps @ 320×320， 60 fps @ 320×240(QVGA)CRA(maximum)30℃Sensor SpecificationsSupply Voltage：Analog - 2.8 V， Digital - 1.5V(Internal LDO：1.5V - 2.8V)， I/O - 1.5 - 2.8VInput Reference Clock：3 - 50 MHzSerial Interface(I2C)：2-wire， 400 KHz max.Video Data Interface：1b， 4b， 8b with frame / line SYNCOutput Clock Rate MAX：50 MHz for 1bit， 12.5 MHz for 4bit， 6.25 MHz for 8bitEst. Power Consumption(include IO with 5pF load)：QVGA 60FPS(Typical)<4 mWQVGA 30FPS(Typical)<2 mW

Single row of 40-holes、female header. Can be cut to size with a pair of wire-cutters. Standard .1" spacing. We use them extensively in the Olimex development boards. They mate very well with break away male headers.Please noteYou will probably lose one pin with each cut.

DescriptionYour 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 GuideFeaturesVoltage Rating：220VAC/28VDCVCC requirements：4-6V， 150mA capableSPDT pins exposed(Form C)14 AWG screw terminals for relay connections.10 AWG solder lugs for relay connections.Flyback diode includedZener recovery diode included(decreases turn-off time)Heavy oz. copper on PCB

DescriptionThe SparkFun Continuous Rotation(CR)Servo Trigger is a small robotics board that simplifies the control of hobby RC servo motors. When an external switch or logic signal changes state， the CR Servo Trigger is able to tell an attached servo motor to move from position A to position B. To use the CR Servo Trigger， you simply connect a hobby servo and a switch， then use the on-board potentiometers to adjust the start/stop positions and the transition time. You can use a hobby servo in your projects without having to do any programming!When we introduced the original Servo Trigger， we mentioned that it could be reprogrammed to be more useful with continuous rotation servo motors. But reprogramming the firmware is somewhat tedious， and users asked for a Servo Trigger preprogrammed with the continuous rotation logic. With this little board you will be provided an easy way to deploy continuous rotation servos into your projects!The heart of the CR Servo Trigger is an Atmel ATtiny84 microcontroller， running a small program that implements the servo control features designed for continuous rotation servos. On board each of these CR Servo Triggers you will find three potentiometers："A" sets the position the servo sits in while the switch is open， "B" sets the position the servo moves to when the switch is closed， and "T" sets the time it takes to get from A to B and back.Compared with a servo motor， the CR Servo Trigger board draws very little current， roughly 5mA at 5V. Be sure to note that if you're using the CR Servo Trigger to control your motor， the absolute maximum supply voltage that should be applied is 5.5 VDC. Additionally， the SparkFun CR Servo Trigger is designed to make it easy to daisy chain boards - you can simply connect the VCC and GND pads on adjacent boards to each other.Note：This idea originally came from our friend in the Oakland area， CTP. If you see him， please give him a high-five for us.SparkFun CR Servo Trigger Hookup GuideFeaturesRecommended Voltage：5VDCMax Voltage：5.5VDCCurrent Draw：5mAControl Continuous Rotation ServosThree Control SettingsA - sets the position the servo sits in while the switch is openB - sets the position the servo moves to when the switch is closedC - sets the time it takes to get from A to B and backEasy Control with PotentiometersConfigurable Input PolarityConfigurable Response ModeCompatible with Analog ServosISP Header Pins Available for Reprogram

DescriptionThe SparkFun Inventor's Kit(SIK)for Arduino Uno is a great way to get started with programming and hardware interaction with the Arduino programming language. The SIK includes everything you need to complete five overarching projects consisting of 16 interconnected circuits that teach everything from blinking an LED to reading sensors. The culminating project is your very own autonomous robot! No previous programming or electronics experience is required to use this kit.The online guide contains step-by-step instructions with circuit diagrams and hookup tables for building each project and circuit with the included parts. Full example code is provided， new concepts and components are explained at point of use， and troubleshooting tips offer assistance if something goes wrong.The kit does not require any soldering and is recommended for beginners ages 10 and up who are looking for an Arduino starter kit. For SIK version 4.1 we took an entirely different approach to teaching embedded electronics. In previous versions of the SIK， each circuit focused on introducing a new piece of technology. With SIK v4.1， components are introduced in the context of the circuit you are building， and each circuit builds upon the last， leading up to a project that incorporates all of the components and concepts introduced throughout the guide. With new parts and a completely new strategy， even if you've used the SIK before， you're in for a brand-new experience!This version of the SIK replaces the SparkFun RedBoard Qwiic with the Arduino Uno(SMD version)and comes without the SIK guidebook and carrying case. With these components being swapped and removed， we were able to reduce the overall size and weight of the kit， making shipping cheaper and easier for anyone ordering internationally.Note：As stated above， this SIK does NOT include a carrying case or print guidebook.Get Started With the SparkFun Inventor's Kit v4.1 Experiment GuideExamplesProject 1：LightCircuit 1A：Blinking an LEDCircuit 1B：PotentiometerCircuit 1C：PhotoresistorCircuit 1D：RGB Night-LightProject 2：SoundCircuit 2A：BuzzerCircuit 2B：Digital TrumpetCircuit 2C："Simon Says" GameProject 3：MotionCircuit 3A：Servo MotorsCircuit 3B：Distance SensorCircuit 3C：Motion AlarmProject 4：DisplayCircuit 4A：LCD "Hello， World!"Circuit 4B：Temperature SensorCircuit 4C："DIY Who Am I?" GameProject 5：RobotCircuit 5A：Motor BasicsCircuit 5B：Remote-Controlled RobotCircuit 5C：Autonomous Robot

DescriptionThe SparkFun Qwiic Scale is a small breakout board for the NAU7802 that allows you to easily read load cells to accurately measure the weight of an object. By connecting the board to your microcontroller you will be able to read the change