SparkFun Electronics
SparkFun has been helping turn ideas into reality – whether you’re creating a smart weather station, exploring the frontier of machine learning, building a robot for school or prototyping your first (or tenth) product. No matter your vision or skill level, our open source components, resources and online tutorials are designed to broaden access to innovative technology and make the road to a finished project shorter. We're here to help you start something.
- 303-284-0979
- 303-443-0048
- customerservice@sparkfun.com
- 6333 Dry Creek Parkway
Niwot, CO 80503
United States of America
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Product
SparkFun RGB Light Sensor
ISL29125
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If you’ve had ideas for a project that depends on the ability to sense different spectrums of visible light and react based on those measurements, the ISL29125 breakout board may be just what you need. The ISL29125 breakout board makes it very easy to sense and record the light intensity of the general red, green, and blue spectrums of visible light while rejecting IR from light sources. You can then use these color sensor readings for the purposes of logging and finding patterns, or creatively calculate and make control decisions in your electronic projects.
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Product
Qwiic Spectral Sensor
AS7341
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The AS7341 is an 11-channel spectral sensor from AMS that covers wavelengths between 350nm to 1000nm. It features eight channels that span the visible spectrum and there's a channel for Near IR, clear, and flicker detection up to 2kHz. Point a spectral sensor at an object and it measures the reflected or absorbed electromagnetic wavelengths.
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Product
SparkFun OpAmp Breakout
LMV358
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This is a simple 5V Op Amp breakout board, set up as a 2-stage amplifier with a gain of 100 (gain of 10 for each stage). The on-board trim pot sets the signal level between the stages, not the feedback path. The bandwidth is set to 15.9kHz by a pair of feedback capacitors, or over 100kHz with the caps removed. The LMV358 opamp can source up to 160mA and works well as a low impedance driver/buffer.
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Product
SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A)
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Do you have too many sensors with the same I2C address? Put them on the SparkFun Qwiic Mux Breakout to get them all talking on the same bus! The Qwiic Mux Breakout enables communication with multiple I2C devices that have the same address that makes it simple to interface with. The Qwiic Mux also has eight configurable addresses of its own, allowing for up to 64 I2C buses on a connection. To make it even easier to use this multiplexer, all communication is enacted exclusively via I2C, utilizing our handy Qwiic system.
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Product
SparkFun MicroMod WiFi Function Board
ESP32
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The SparkFun MicroMod ESP32 Function Board adds additional wireless options to MicroMod Processor Boards that do not have that capability. This special function board acts as a coprocessor that takes advantage of Espressif's ESP32 WROOM to add WiFi and Bluetooth® to your applications.
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Product
USB 32-Bit Whacker
PIC32MX795 Development Board
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The new version of the UBW32 now uses the PIC32MX795 IC. Based on the work of Brian Schmalz, the UBW32 is a small development board for the new PIC32MX795 32-bit CPU from Microchip. The UBW32 is breadboard friendly and includes all of the external circuitry needed to get the PIC32 up and running. Power can be provided over USB or from an external source. It has three push buttons (Reset, and two user-defined buttons) and five LEDs (Power, USB, and three user defined LEDs). All of the 78(!) of the PIC32's I/O pins are broken out. The board comes pre-loaded with a USB bootloader and special UBW firmware that accepts simple serial commands to control the various I/O functions.
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Product
SparkFun Micro OLED Breakout
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The SparkFun Micro OLED Breakout Board breaks out a small monochrome, blue-on-black OLED. It’s "micro", but it still packs a punch – the OLED display is crisp, and you can fit a deceivingly large amount of graphics on there. This breakout is perfect for adding graphics to your next Arduino project, displaying diagnostic information without resorting to serial output, and teaching a little game theory while creating a fun, Arduino-based video game. Most important of all, though, is the Micro OLED is easy to control over either an SPI or I2C interface.
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Product
SparkFun RJ45 MagJack Breakout
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This is the SparkFun RJ45 MagJack Breakout, a simple board that will provide you with a way to put an ethernet port into your breadboard. The SparkFun RJ45 MagJack Breakout is the same one found in our very own mbed Starter Kit and breaks out each pin from the ethernet jack. This rev of the breakout is equipped with the RJ45 MagJack connector already soldered to the board which mean you no longer need to solder the connector to the board yourself or worrying about buying them separately!
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Product
SparkFun Coulomb Counter Breakout
LTC4150
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Odometers are extremely useful for cars, they tell you how far you have gone, wouldn't it be nice if you were able to have a device that does the same for electrical current? The LTC4150 SparkFun Coulomb Counter Breakout is here to be your odometer for current. If you are wondering: a coulomb is defined as, to put it simply, one amp for one second. This breakout is capable of constantly monitoring the current your sensor is using, is able to add it up, and will give you a pulse each time a given amount of amp-hours have been used. When used effectively and if you start with a full battery, you’ll always know exactly how much of it is left!
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Product
SparkFun Analog MEMS Microphone Breakout
ICS-40180
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The SparkFun Analog MEMS Microphone Breakout makes it easy to work with the InvenSense ICS-40180 analog microphone. This board features an OpAmp to bring the output of the microphone to a usable level, allowing you to plug directly into an ADC on a microcontroller or something like the SparkFun Spectrum Shield.
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Product
LilyPad Simple Power
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The LilyPad Simple Power is a simple e-textile board with a 500mA charge rate that lets you connect and charge a lipo battery and switch it on or off, that's it! We provide you with a JST connector and a slide switch, you supply the battery and sewing skills! With this LilyPad Simple Power, you should find no trouble in added a bit of power to your next wearable circuit.
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Product
SparkFun Analog/Digital MUX Breakout
CD74HC4067
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This is a breakout board for the very handy 16-Channel Analog/Digital Multiplexer/Demultiplexer CD74HC4067. This chip is like a rotary switch - it internally routes the common pin (COM in the schematic, SIG on the board) to one of 16 channel pins (CHANxx). It works with both digital and analog signals (the voltage can't be higher than VCC), and the connections function in either direction. To control it, connect 4 digital outputs to the chip's address select pins (S0-S3), and send it the binary address of the channel you want (see the datasheet for details). This allows you to connect up to 16 sensors to your system using only 5 pins!
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Product
SparkFun Transceiver Breakout
RS-485
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This is a breakout board for the SP3485 RS-485 transceiver IC, which will convert a UART serial stream to RS-485. The SP3485 is a half-duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps. This board requires a very low amount of power and can operate from a single +3.3VDC supply.
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Product
SparkFun Pulse Oximeter And Heart Rate Sensor
MAX30101 & MAX32664 (Qwiic)
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The SparkFun Pulse Oximeter and Heart Rate Sensor is an I2C based biometric sensor, utilizing two chips from Maxim Integrated: the MAX32664 Biometric Sensor Hub and the MAX30101 Pulse Oximetry and Heart Rate Module. While the latter does all the sensing, the former is an incredibly small and fast Cortex M4 processor that handles all of the algorithmic calculations, digital filtering, pressure/position compensation, advanced R-wave detection, and automatic gain control. We've provided a Qwiic connector to easily connect to the I2C data lines but you will also need to connect to two additional lines. This board is very small, measuring at 1in x 0.5in (25.4mm x 12.7mm), which means it will fit nicely on your finger without all the bulk.
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Product
SparkFun Breadboard Power Supply Stick
3.3V/1.8V
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This is a very simple board that takes a 4-9V input voltage and outputs a selectable 1.8V or 3.3V regulated voltage. All headers are 0.1" pitch for simple insertion into a breadboard.















