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Description。This is a piezoresistive force sensor from Tekscan. The harder you press， the lower the sensor's resistance. Pressing hard， the resistance changes from infinite to ～300k. The sensor itself is thin and flexible， but the resistance does not change while being flexed. Resistance changes only when pressure is applied to the round area at the end of the sensor. Used as a presence sensor(someone standing)， weight sensor， pressure sensor(impact testing)， etc.。The overall length is about 8.5". Sensor comes with 0.1" spaced， reinforced， breadboard friendly connector.。This sensor comes in three flavors. This sensor ranges from 0 to 25lbs of pressure.

Description。Just bought your machine and not sure what endmills you should get? The Shapeoko Endmill Starter Pack is for you! It contains variety of the most popular endmills used on the Shapeoko to get you going on variety of projects.

Description。The 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

Description。The MQ-137 is an Ammonia(NH3)gas sensor from Winsen. The sensing element is SnO2， which has lower conductivity in clean air. When NH3(Ammonia)gas exists， the sensor's conductivity gets higher along with the gas concentration rising. A simpl

Description。The MQ-136 is a Hydrogen Sulfide detection sensor with a sensing range of 1 - 200ppm. The sensing element is SnO2， which has lower conductivity in clean air. When H2S gas exists， the sensor's conductivity gets higher along with the gas con

Description。This is standard PCB Drill Set from Carbide 3D that supplies you with more options for drilling into copper clad on your Shapeoko or Nomad CNC machines. Each set includes three 0.5mm， five 0.7mm， and two 0.9mm PCB drills each with a 0.125"

Description。Please note， these machines are built to order have an estimated lead time of 4 business days before shipping。This is the Shapeoko 4 XXL， nearly double the cutting area of the Shapeoko 4 Standard! The Shapeoko is a 3-axis CNC Machine k

Description。After years of popularity with the XBee Series 1 and XBee Series 2， we now have the XBee Series 3 which brings the best of both worlds. XBee 3 not only handles 802.15.4， and ZigBee， but also BLE protocols and you can now talk to the modules

Description。The Nomad Flip Jig is a handy accessory for your Nomad 883 Pro that allows you to cut both sides of a part while maintaining perfect alignment. Each one of these jigs is precision machined to mount to the Nomad's table and uses the CNC's bu

。Description。Who doesn't occasionally need power regulation? We certainly do， so we've designed the SparkFun BabyBuck Regulator Breakout to help us with just such a task. Featuring the AP63203 from Diodes Inc， this breakout board takes advantage of a 2A synchronous buck converter that has a wide input voltage range of 3.8V to 32V and fully integrated 125mΩ high-side power MOSFET/68mΩ lowside power MOSFET to provide high-efficiency step-down DC/DC conversion. All of this snuggled up in a low-profile， TSOT26 package that's integrated into a 0.4in by 0.5in board.。Unlike it's sibling， the BabyBuck sacrifices power option flexibility for space. Don't worry， though， because you can still use the plated through holes for input and output power. With some simple right-angle headers， you'll be up and running in no time.。Frequency Spread Spectrum(FSS)reduces EMI and a proprietary gate driver scheme resists switching node ringing without sacrificing MOSFET turn-on and turn-off times， which further erases high-frequency radiated EMI noise.。Get Started with the SparkFun Buck Regulator Hookup Guide。Features。Low-Profile Footprint。VIN 3.8V to 32V。VOUT 3.3V。Up to 2A Continuous Output Current。0.8V ± 1% Reference Voltage。22μA Ultralow Quiescent Current。Switching Frequency - 1.1MHz。Supports Pulse Frequency Modulation(PFM)。Up to 80% Efficiency at 1mA Light Load。Up to 88% Efficiency at 5mA Light Load。Fixed Output Voltage - 3.3V。Proprietary Gate Driver Design for Best EMI Reduction。Frequency Spread Spectrum(FSS)to Reduce EMI。Precision Enable Threshold to Adjust UVLO。Protection Circuitry。Overvoltage Protection。Cycle-by-Cycle Peak Current Limit。Thermal Shutdown

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

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

Description。These flat mills are perfect for roughing or machining flat or prismatic parts.。If you've got a Nomad or Shapeoko， these are great cutters for cutting plastic and aluminum.。All of our cutters are manufactured here in the US and begin

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

Description。The MQ-2 is a smoke and combustible gas sensor from Winsen. It can detect flammable gas in a range of 300 - 10000ppm. It's most common use is domestic gas leakage alarms and detectors with a high sensitivity to propane and smoke. The sensing material is SNO2 for which the conductivity is lower in clean environments and higher when smoke or flammable gas is present. A simple circuit makes measuring this change in conductivity and turning it into data fairly straight-forward， but does require some calibration.。For easy Solderability； use our Gas Sensor Breakout Board.

Description。The MQ-9B is a CO and CH4 gas detection sensor form Winsen. The sensing material of the MQ-9B is SnO2， which has a low conductivity in clean air. It detects carbon monoxide(1.5V)by method of cycling high and low temperature. The sensor's conductivity gets higher with the CO and CH4 gas concentration rising. The sensing range is 10-500ppm CH4. A simple circuit makes measuring this change in conductivity and turning it into data fairly straight-forward， but does require some calibration.。For easy Solderability； use our Gas Sensor Breakout Board.

Description。The SparkFun Qwiic LED Stick features ten addressable APA102 LEDs， making it easy to add full color LED control using I2C. Write to individual LEDs to display a count in binary， or write to the whole strip for cool lighting effects. You can even add more LEDs to the end if you need to. We've written an Arduino library and Python package that take care of the I2C and communication to the LEDs so all you have to do is decide what color each LED should be.。The LED Stick has a default I2C address of 0x23 but can be changed with a simple command， allowing you to control up to 100 LEDs(10 Qwiic LED Sticks)on a single bus! The address can also be changed to 0x22 by closing the solder jumper on the back of the board.。This board 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!。Warning：Using a lot of LEDs can draw a lot of current. Make sure to consider the power limits of your setup. If you expect your LED chain to draw more than 600mA of current， connect your external supply directly to VLED. Closing the jumper from VLED to VCC will add a 4.7uF decoupling capacitor.。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 LED Stick Guide。Features。10x APA102C addressable LEDs driven by an ATTiny85。Default I2C Address：0x23(Adjustable to 0x22 via Jumper)。2x Qwiic Connectors

Description。This is a two pack of #501 PCB engravers from Carbide 3D for your Shapeoko or Nomad CNC machine to supply you with even more fabrication and milling options. Each PCB engraver possesses a 0.1" ball tip with a 0.005" radius， a 60 degree tip angle， and is made of solid carbide to ensure long lasting use.。If you are wondering how best to utilize this kit， make sure to check out the free to use web app， Carbide Copper. Carbide Copper is CAM software to let you mill PCBs with your CNC machine and is the fastest way to make same-day circuit boards in your own office or shop.。Note：It is recommended to use this PCB engraver with FR1 copper clad rather than FR4 to ensure you give your tool bit the longest life possible.。Features。0.00" Ball tip(0.005" radius)。60 Degree Tip Angle。0.125" Shank。2 Flutes。Solid Carbide

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。This is a two pack of #502 PCB engravers from Carbide 3D for your Shapeoko or Nomad CNC machine to supply you with even more fabrication and milling options. Each PCB engraver possesses a 0.005" ball tip with a 0.0025" radius， a 40 degree tip angle， and is made of solid carbide to ensure long lasting use.。If you are wondering how best to utilize this kit， make sure to check out the free to use web app， Carbide Copper. Carbide Copper is CAM software to let you mill PCBs with your CNC machine and is the fastest way to make same-day circuit boards in your own office or shop.。Note：It is recommended to use this PCB engraver with FR1 copper clad rather than FR4 to ensure you give your tool bit the longest life possible.。Features。0.005" Ball tip(0.0025" radius)。40 Degree Tip Angle。0.125" Shank。2 Flutes。Solid Carbide

Description。These flat mills are perfect for roughing or machining flat or prismatic parts.。If you've got a Nomad or Shapeoko， these are great cutters for cutting plastic and aluminum.。All of our cutters are manufactured here in the US and begin life as a blank of US carbide. There's nothing imported here!。Note：If you have or are purchasing a Shapeoko， please be sure you are purchasing a precision collet and nut to be able to use these cutters.。。Features。Cutting Diameter：.125"。Cutting Length：.5"。Shank Diameter：.125"

。Description。These flat mills are perfect for roughing or machining flat or prismatic parts.。If you've got a Nomad or Shapeoko， these are great cutters for cutting plastic and aluminum.。All of our cutters are manufactured here in the US and begin life as a blank of US carbide. There's nothing imported here!。Note：If you have or are purchasing a Nomad， please be sure you are purchasing a .25" collet and nut to be able to use these cutters.。。Features。Cutting Diameter：.250"。Cutting Length：.75"。Shank Diameter：.250"

。Description。This is a 10-pack of wires that are pre-terminated with an alligator clip on one end and a female header on the other. Alligator clips are a staple item for any workbench or makerspace， and with these cables you will be able to easily incorporate those clips into a breadboard， development platform or anything else to which you would normally be able to attach a hookup wire.。Each alligator clip with female header cable has a wire length of 30cm(that's a little less than 1ft)and a port that easily accepts a standard 0.1" connector.

Description。This is a 10-pack of wires that are pre-terminated with an alligator clip on one end and a hookup pigtail on the other. Alligator clips are a staple item for any workbench or makerspace， and with these cables you will be able to easily incorporate those clips into a breadboard， development platform or anything else to which you would normally be able to attach a hookup wire.。Each alligator clip with pigtail cable has a wire length of 30cm(that's a little less than 1ft)and a male pin that easily inserts into a standard 0.1" connector. Each pack consists of five red cables and five white cables.

Description。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 SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the Qwiic Alphanumeric Display Hookup Guide。Features。Operating Voltage：3.3V。Integrated RC oscillator。Maximum display segment numbers：128 patterns。13×3 matrix key scan circuit。16-step dimming circuit。I2C Addresses：0x70(0x71， 0x72， 0x73)。2x Qwiic connectors。2x Wall Mounting Points

Description。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 SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the Qwiic Alphanumeric Display Hookup Guide。Features。Operating Voltage：3.3V。Integrated RC oscillator。Maximum display segment numbers：128 patterns。13×3 matrix key scan circuit。16-step dimming circuit。I2C Addresses：0x70(0x71， 0x72， 0x73)。2x Qwiic connectors。2x Wall Mounting Points

Description。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 SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the Qwiic Alphanumeric Display Hookup Guide。Features。Operating Voltage：3.3V。Integrated RC oscillator。Maximum display segment numbers：128 patterns。13×3 matrix key scan circuit。16-step dimming circuit。I2C Addresses：0x70(0x71， 0x72， 0x73)。2x Qwiic connectors。2x Wall Mounting Points

Description。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 SparkFun Qwiic Connect System is an ecosystem of I2C sensors， actuators， shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch， 4-pin JST connector. This reduces the amount of required PCB space， and polarized connections mean you can't hook it up wrong.。Get Started with the Qwiic Alphanumeric Display Hookup Guide。Features。Operating Voltage：3.3V。Integrated RC oscillator。Maximum display segment numbers：128 patterns。13×3 matrix key scan circuit。16-step dimming circuit。I2C Addresses：0x70(0x71， 0x72， 0x73)。2x Qwiic connectors。2x Wall Mounting Points

Description。These are the surface mount 50 pin 0.5mm Board to Board Double Slot Male Connectors found on the Alchitry FPGA boards. These headers allow for Alchitry FPGA Boards to stack on one another by being soldered to the underside of the board.。These connectors are sold in single units. Four of these connectors are needed for the topside of an Alchitry Board.

Description。These are the surface mount 50 pin 0.5mm Board to Board Double Slot Female Connectors found on the Alchitry FPGA boards. These headers allow for Alchitry FPGA Boards to stack on one another by being soldered to the topside of the board.。These connectors are sold in single units. Four of these connectors are needed for the underside of an Alchitry Board.

Description。This Low Profile Vise provides you with a compact workholding accessory for the Nomad 883 Pro. Each one of these vises are made from scratch， in-house at Carbide 3D， and includes everything you need to attach it to your Nomad. With the Low Profile Vise you will be able to create miniature and small silhouette milling projects.。The Low Profile Vise has a maximum clamping width of 6.5in(～165mm)and is only 8in(～203mm)long and 2in(～50mm)wide. It should go without saying that this vise will easily provide you the ability to mill and fabricate more unique objects!

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

Description。No， this isn't a tank tread， this is a 0.5m long Cable Carrier with 10x15mm bits composing its main body and two screw fasteners at each end for efficient mounting. Sometimes called a "drag chain，" each carrier can be used in projects with a large number of moving parts to protect internally installed cables， pipes， or tubes so they can be bent and moved while remaining protected. Cable carriers can most commonly been found in 3D printers and CNC machines but they can be used in any situation where you need cables or tubes to bend without risk of them being damaged or wearing out prematurely.。This specific cable carrier offers inner dimensions of 10mm(height)by 15mm(wide)， an outer width of 22mm， and a bend radius of 20mm. Additionally， these carriers are thin enough to fit into an Actobotics channel， making custom slide machines or other projects even easier to manage. Much like a chain， individual links can be added or removed to make custom lengths.。Features。Inner Bit Height：10mm。Inner Bit Width：15mm。Outer Bit Height：14。Outer Bit Width：22mm。Minimum Bend Radius：20mm。Reinforced Nylon Structure

Description。The 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

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。Do you need help soldering a difficult project， reworking a botched pin or just making your life easier? This 10mL no-clean flux pen from Chip Quik(R)is great for all of your solder， desolder， rework and reflow purposes! For those of you unfamiliar， flux is a handy substance that prevents beading of the solder and helps the solder flow cleanly onto the parts you are soldering. This is a must-have tool for any hobbyist's workbench.。Each of these flux pens can be used in leaded and lead-free applications and is VOC， halide and rosin free --- making it RoHS II and REACH compliant. Since this is a "no-clean" style flux， you won't have to worry about any sort of conductivity issues associated with it interfering with your board or project. However， it is advisable to still clean whatever you are using this flux pen on with basic isopropyl alcohol(IPA)， because a clean board is a happy board!。Note：It isn't recommended to use this flux with solder that has a water-soluble or rosin flux core in scenarios that require your boards operate at a high reliability rate. At a hobbyist level you should have no issues.。Features。Flux Type：No-Clean Liquid Flux(for leaded and lead-free applications)。Flux Classification：INM0。Packaging：10mL Pen。Shelf Life：Refrigerated >24 months； Unrefrigerated >24 months

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

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

Description。After years of popularity with the XBee Series 1 and XBee Series 2 Pro Modules， we now have the XBee Series 3 Pro which brings the best of both worlds. XBee 3 not only handles 802.15.4， and ZigBee， but also BLE protocols and you can now talk to the modules over UART or SPI as well. With a 300ft indoor range， or 2mile outdoor/line-of-sight range， you can set up a mesh network to talk to or communicate with various devices around your house， work， or other area.。This module has the familiar XBee package while sporting a U.FL connector to add an antenna. You also get a built in microcontroller so you can also configure and program the modules using MicroPython as well as Digi's XCTU software. With a HCS08 CPU running at up to 50.33MHz， 15x digital I/O pins， and 4x 10-bit ADC pins these modules can even hold their own as a microcontroller.。Note：While these are backwards compatible in many ways with the XBee 1s and 2s， they are not completely compatible. Please see documentation for differences if you plan on adding these to an existing project.。Features。RF 250Kbps， Serial 1Mbps。300ft(indoor)to 2 mile(outdoor)range。Transmit power +19dBM @ 135mA。Receiver Sensitivity -103dBm @ 15mA。4x 10-bit ADC inputs。15x Digital I/O pins。HCS08 CPU at up to 50.33MHz。128/256 bit AES Encryption。2.1V to 3.6V operating voltage。1.7 μA power-down current。Built in RS-485 support。AT command or API frame support。FCC Certified

Description。The Xcelite 8-in-1 Screwdriver Set provides eight high-quality bits in a single ergonomic tool. Each bit is easily accessible with a spring-loaded magnetic housing that holds the seven included bits you aren't currently using. Though the screwdriver set includes eight unique bits， the end of the shaft features a 0.25" hex driver that can fit most of your existing 1/4" bits. With a strong magnetic hold and no-roll handle design， this is one of the best all-in-one tools we have used!。The shaft of this multiple-tip driver is made from a chrome-molybdenum vanadium steel that makes for great durability and longevity.