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DescriptionThe SparkFun Arduino ProtoShield is a bare PCB with no attached or included parts that lets you customize your own Arduino shield using whatever circuit you can come up with! You will even be able to test your circuit or project to make sur

DescriptionThe Pi Zero USB Stem is a PCB kit that turns a Raspberry Pi Zero into a USB dongle. Once the Stem is installed， your Raspberry Pi can be plugged directly into a computer or USB hub without any additional cables or power supplies. The Raspberry Pi then acts as a USB device using its own Linux kernel gadget drivers to get started.The Zero Stem is designed to be soldered directly to the USB SMD test pads on the bottom of the Raspberry Pi Zero， needing no wires or pogo pins at all， just solder and a soldering iron! Attaching the stem to your Pi also allows you to create a portable VNC server， or even cluster several Raspberry Pi Zeros with just a USB hub.The Zero Stem is compatible with the Raspberry Pi Zero v1.3 and the Raspberry Pi Zero W v1.1， but unfortunately it is not compatible with the Raspberry Pi Zero v1.2 or any full-size Raspberry Pi due to their shapes and sizes.Note：In order for your Pi Zero to function as a USB device with this Stem， you will need to configure it to act as one. You will be able to find these instructions in the Documentations tab under "How to OTG Fast".

DescriptionIt's tiny， it's handy， and it can give your normal USB-equipped device a micro-B connector! With the USB to Micro-B Adapter you can make a flash drive connect to your tablet， connect a keyboard to your phone in order to text with ease， attach a Bluetooth(R)dongle to your RPi Zero， and more! Since this adapter is super small， it is very easy to transport anywhere you might need it --- making it extremely convenient to have in a pinch.Installation of the USB to Micro-B Adapter is easy； simply slide it into a USB A connector， and you will instantly make that device micro-B capable!

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

DescriptionThis 7" Raspberry Pi Touchscreen LCD provides you with the ability to create a standalone device that can be utilized as a custom tablet or an all-in-one interactive interface for a future project using your Raspberry Pi 3. Each LCD features a full color 800×480 capacitive touch display that connects to the Pi via an included adapter board which handles all of your power and signal conversion needs. An updated version of Raspbian OS on the A+， B+ and Pi2B is required for the display to work(the display does not work with the current version of Raspbian available on the Model A or B).What makes this LCD great is the fact that it only requires two connections to be hooked up to the Pi； power from the Pi's GPIO port and a ribbon cable that connects to the DSI port present on all Raspberry Pi's. Touchscreen drivers with support for 10-finger touch and an on-screen keyboard allow you to use your Raspberry Pi without an external keyboard or mouse.With this Raspberry Pi LCD you can create your own 'Internet of Things'(IoT)devices including a visual display by simply connecting your Pi， developing a easy Python script to interact with the display， and you'll be ready to create your own home automation devices with touch screen capability.Note：The latest version of Raspbian OS is required for this Raspberry Pi LCD to operate correctly.Features7" Touchscreen Display.Screen Dimensions：194mm×110mm×20mm(including standoffs)Viewable screen size：155mm×86mm70 degree viewing angleScreen Resolution 800×480 pixels @ 60fps24-bit color10 finger capacitive touch.Connects to the Raspberry Pi board using a ribbon cable connected to the DSI port.Adapter board is used to power the display and convert the parallel signals from the display to the serial(DSI)port on the Raspberry Pi.

DescriptionThis S-Type load cell(sometimes called a strain gauge)can translate up to 200kg of pressure(force)into an electrical signal. Each load cell is able to measure the electrical resistance that changes in response and proportion to the strain(e.g.， pressure or force)applied to the form. With this gauge you will be able to tell just how heavy an object is， if an object's weight changes over time， or if you simply need to sense the presence of an object by measuring strain or load applied to a surface.Each straight bar load cell is made from an alloy steel and is capable of reading a capacity up to 200kg. These load cells have four strain gauges that are hooked up in a Wheatstone bridge formation. The color code on the wiring is as follows：red = E+， green = O+， black = E-， and white = O-. Additionally， these load cells offer an IP66 protection rating and feature two M4 and two M5 sized through-holes for mounting purposes.Get Started with the Load Cell GuideFeatures51mm×19mm×76mm， 3m Wire

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

DescriptionThis straight bar load cell(sometimes called a strain gauge)can translate up to 10kg of pressure(force)into an electrical signal. Each load cell is able to measure the electrical resistance that changes in response to， and proportional of， the strain(e.g. pressure or force)applied to the bar. With this gauge you will be able to tell just how heavy an object is， if an object's weight changes over time， or if you simply need to sense the presence of an object by measuring strain or load applied to a surface.Each straight bar load cell is made from an aluminum-alloy and is capable of reading a capacity of 10kg. These load cells have four strain gauges that are hooked up in a wheatstone bridge formation. The color code on the wiring is as follows：red = E+， green = O+， black = E-， and white = O-. Additionally， these load cells offer an IP66 protection rating and feature two M4 and two M5 sized through-holes for mounting purposes.Get Started with the Load Cell GuideFeatures80mm×12.7mm×12.7mm， 250mm Wire

DescriptionThis straight bar load cell(sometimes called a strain gauge)can translate up to 5kg of pressure(force)into an electrical signal. Each load cell is able to measure the electrical resistance that changes in response to， and proportional of， the strain(e.g. pressure or force)applied to the bar. With this gauge you will be able to tell just how heavy an object is， if an object's weight changes over time， or if you simply need to sense the presence of an object by measuring strain or load applied to a surface.Each straight bar load cell is made from an aluminum-alloy and is capable of reading a capacity of 5kg. These load cells have four strain gauges that are hooked up in a wheatstone bridge formation. The color code on the wiring is as follows：red = Exc+， green = Sig+， black = Exc-， and white = Sig-. Additionally， these load cells offer an IP65 protection rating and features two M5 sized through-holes for mounting purposes.Get Started with the Load Cell GuideFeaturesCapacity：5kgMaterial：Aluminum-AlloyParallel Beam TypeIP65 Rating55mm×12.7mm×12.7mm， 200mm Wire

DescriptionThe gator：log is the perfect data logging tool for your next experiment. With the automation of the data collection process， gone are the days of rushing around with a pen and composition notebook to simultaneously record data and your observations. Now， you only need to sit back and observe your experiment.The gator：log allows a student(s)to focus more on what is happening in the experiment than watching a thermometer or sensor readout. Additionally， a micro：bit can still be used to provide a graphical display for observing changes in data， when a sensor readout is required. If tied in conjunction with the gator：RTC， stop watches on time based experiments can become a thing of the past too(with the added benefit of more accurate timing results)!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 SparkFun gator：log Hookup GuideFeaturesATmega328P microcontrollerμSD(micro SD)card slot for μSD card for data storageTwo status indicator LEDsSerial connection via RX and TX padsGND and 3V3 pads for 3.3V power connection

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

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 moto：bit is a fully loaded "carrier" board for the micro：bit that， when combined with the micro：bit， provides you with a fully functional robotics platform. The moto：bit offers a simple， beginner-friendly robotics controller capable of operating a basic robotics chassis. Onboard each moto：bit are multiple I/O pins， as well as a vertical Qwiic connector， capable of hooking up servos， sensors and other circuits. At the flip of the switch you can get your micro：bit moving!The moto：bit connects to the micro：bit via an updated SMD， edge connector at the top of the board， making setup easy. This creates a handy way to swap out micro：bits for programming， while still providing reliable connections to all of the different pins on the micro：bit. We have also included a basic barrel jack on the moto：bit that is capable of providing power to anything you connect to the carrier board.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!Note：The SparkFun moto：bit doesNOTinclude a micro：bit board. The micro：bit will need to be purchased separately.Get started with the moto：bit GuideFeaturesMore reliable Edge connector for easy use with the micro：bitFull H-Bridge for control of two motorsControl servo motorsVertical Qwiic ConnectorI2C port for extending functionalityPower and battery management onboard for the micro：bit

DescriptionDo you own micro：bit or micro：bit Go Bundle and want to expand your skills with the new microcontroller? You are in luck! The SparkFun Inventor's Kit Bridge Pack for micro：bit was designed to provide you with an easy way to transform your m：b into full fledged learning kit! Each Bridge Pack includes all of the parts found in the SIK for micro：bit that aren't included with the Go Bundle. With the SIK Bridge Pack for micro：bit you will be able to complete circuits that will teach you how to read sensors， move motors， build Bluetooth(R)devices and more.The micro：bit is 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 credit card， this versatile board has vast potential!Note：The Bridge Pack is NOT full SparkFun Inventor's Kit and only includes the parts to complement micro：bit Go Bundle or standalone board. That also means that this kit doesnotinclude micro：bit， which will need to be purchased separately.Get started with the micro：bit SIK Experiment GuideExamplesCircuit 0：Hello， micro：bit!Circuit 1：Blinking an LEDCircuit 2：Reading PotentiometerCircuit 3：Reading PhotoresistorCircuit 4：Driving an RGB LEDCircuit 5：Reading an SPDT SwitchCircuit 6：Reading Button PressCircuit 7：Reading the Temperature SensorCircuit 8：Using Servo MotorCircuit 9：Using BuzzerCircuit 10：Using the AccelerometerCircuit 11：Using the Compass

DescriptionThe SparkFun weather：bit is a fully loaded "carrier" board for the micro：bit that， when combined with the micro：bit， provides you with a fully functional weather station. With the weather：bit you will have access to barometric pressure， relative humidity and temperature readings. There are also connections on this carrier board to optional sensors such as wind speed， direction， rain gauge and soil readings! In this version we have also added a vertical Qwiic connector. The micro：bit has a lot of features and a lot of potential for weather data collection.The weather：bit connects to the micro：bit via an edge connector at the top of the board， making setup easy. This creates a handy way to swap out micro：bits for programming， while still providing reliable connections to all of the different pins on the micro：bit. We have also included serial and I2C headers on the weather：bit for optimized connectivity if you so choose.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!Note：The SparkFun weather：bit doesNOTinclude a micro：bit board. The micro：bit will need to be purchased separately.Get started with the weather：bit GuideFeaturesOnboard temperature， humidity， and pressure sensorConnectors(PTH and screw terminal)for soil moisture and soil temperatureConnectors(RJ11)for wind speed， direction and rainfall gaugesEdge connector for easy micro：bit integrationVertical Qwiic connectorHeaders for Serial and I2C communication

DescriptionThe SparkFun micro：climate kit is a full weather station kit that is built on top of the weather：bit carrier board. Unlike previous weather kits we've carried， this micro：climate kit is Qwiic enabled and includes our tried-and-true Weather Meters and Soil Moisture Sensor， so whether you're an agriculturalist， a professional meteorologist or a hobbyist， you will be able to build a high-grade weather station powered by the micro：bit. You can even talk via wireless communication between two micro：bits with this kit to be able to monitor the weather without being exposed to it!Inside each micro：climate kit you will find all the components required to build your micro：bit into a go-to weather sensor； the only parts not included are two AAA batteries， microSD card， and the micro：bit itself. Simply add your own micro：bit to the provided weather：bit， assemble the kit， and you will be ready to start sensing. The SparkFun micro：climate kit is a great way to get your feet wet in high-grade sensors --- just not literally； that's the weather：bit's job!The kit does not require any soldering and is recommended for anyone curious about weather-sensing technology or the micro：bit platform.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!Note：The SparkFun micro：climate kit doesNOTinclude a micro：bit board. The micro：bit board will need to be purchased separately. You will also need a microSD card when logging data and AAA batteries to power remotely.Get started with the micro：climate kit Guide

DescriptionThe SparkFun Inventor's Kit(SIK)for micro：bit v2 is a great way to get creative， connected and coding with the micro：bit. The SIK for micro：bit v2 provides not only the micro：bit v2 board but everything you need to hook up and experiment with multiple electronic circuits! With the SIK for micro：bit v2 you will be able to complete circuits that will teach you how to read sensors， move motors， build Bluetooth(R)devices and more.The SparkFun Inventor's Kit for micro：bit is the latest and greatest in single-board computer kits. Surrounding the micro：bit v2 SIK is one core philosophy --- that anyone can(and should)experiment with cutting-edge electronics in a fun and playful way without breaking the bank.The kit does not require any soldering and is recommended for all users， from beginners to engineers. We have provided a complete Experiment Guide in the Documents tab for you to check out now! If you have ever been interested in learning about electronics， or if you have used the original SparkFun Inventor's Kit and are looking for something new， the SIK for micro：bit is the perfect kit for you!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!ExamplesCircuit 0：Hello， micro：bit!Circuit 1：Blinking an LEDCircuit 2：Reading a PotentiometerCircuit 3：Reading a PhotoresistorCircuit 4：Driving an RGB LEDCircuit 5：Reading an SPDT SwitchCircuit 6：Reading a Button PressCircuit 7：Reading the Temperature SensorCircuit 8：Using a Servo MotorCircuit 9：Using a BuzzerCircuit 10：Using the AccelerometerCircuit 11：Using the Compass

DescriptionThe micro：bit v2 Educator's Lab Pack includes 10 micro：bit v2 boards and everything you need to get you started with the new learning platform. The Lab Pack has everything you need， including micro：bits， cables， battery packs and a few parts to experiment with. This package provides an easy way to introduce your students to the micro：bit without any difficulty or parts hunting.SparkFun packages everything educators need to get started with the micro：bit in a variety of classroom settings and learning environments. The hardware boards， cables and extra parts come pre-packaged. Examples and curriculum materials are available from SparkFun and micro：bit， as well as from other educators involved in this growing maker education movement.Lab Packs are your classroom entry point. By combining our kits， popular boards and other educational tools with support materials(to be updated)， SparkFun brings all the power of the open source community to the classroom. We've also updated the battery pack to be closer to what is in other micro：bit kits. It now requires 2xAAA batteries.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!FeaturesMicro：bit 2.0：64 MHz Arm Cortex-M4 with FPU512KB Flash128KB RAM5x5 Red LED ArrayTwo Programmable Buttons， one touch sensitive logoMEMS microphone and LED indicatorOnboard Light， Compass， Accelerometer， Temp Sensors and Speaker2.4 Ghz Micro：bit Radio/BLE 5.0 Smart Antenna25-pin Edge Connector4 dedicated GPIO， PWM， i2c， SPI， and ext. powerThree Digital/Analog Input/Output RingsTwo Power Rings --- 3V and GNDDedcated I2C bus for peripheralsMicroUSB Connector(5V)JST-PH Battery Connector(NotJST-XH)(3V)Power/reset Button with Status LED200 mA available for accessoriesProgram with C++， MakeCode， Python， Scratch

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 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 GuideFeaturesSparkFun Pulse Oximeter and Heart Rate SensorMAX30101 and MAX32664 sensor and sensor hubQwiic connectors for power and I2C interfaceI2C Address：0x55MAX30101 - Pulse Oximeter and Heart-Rate SensorHeart-Rate Monitor and Pulse Oximeter Sensor in LED Reflective SolutionIntegrated Cover Glass for Optimal， Robust PerformanceUltra-Low Power Operation for Mobile DevicesFast Data Output CapabilityRobust Motion Artifact ResilienceMAX32664 - Ultra-Low Power Biometric Sensor HubBiometric Sensor Hub SolutionFinger-Based Algorithms Measure Pulse Heart Rate and Pulse Blood Oxygenation Saturation(SpO2)Both Raw and processed data are availableBasic Peripheral mix optimizes size and performance

DescriptionThis miniature straight bar load cell(sometimes called a strain gauge)can translate up to 100g of pressure(force)into an electrical signal. Each load cell is able to measure the electrical resistance that changes in response to， and proportional of， the strain(e.g. pressure or force)applied to the bar. With this gauge you will be able to tell just how heavy an object is， if an object's weight changes over time， or if you simply need to sense the presence of an object by measuring strain or load applied to a surface.Each straight bar load cell is made from an aluminum-alloy and is capable of reading a capacity of 100g. These load cells have four strain gauges that are hooked up in a wheatstone bridge formation. The color code on the wiring is as follows：red = Exc+， green = Sig+， black = Exc-， and white = Sig-. Additionally， these load cells offer an IP65 protection rating and features four M3 sized through-holes for mounting purposes.Get Started with the Load Cell GuideFeaturesCapacity：100gMaterial：Aluminum-AlloyParallel Beam TypeIP65 Rating47mm×12mm×6mm， 110mm Wire