Microcontrollers

The Arduino UNO R3 is a microcontroller board based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), ...

This is the only Motor Controller for Arduino that you will ever need to buy!  The Adafruit Motor/Stepper/Servo Shield is simply one of the best sh...

Use these to stack shields on your Arduino! These are standard 6-pin, 8-pin and 10-pin 0.1" spacing female headers...with a twist! The pins are ext...

This is a nice half size breadboard, good for small projects. It's 2.2" x 3.4" (5.5 cm x 8.5 cm) with a standard double-strip in the middle and two...

Deprecation Warning: The Trinket bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So ...

These LED strips are even more fun and glowy. There are 60 RGB LEDs per meter, and you can control each LED individually! Yes, that's right, this i...

This lovely little display breakout is the best way to add a small, colorful and bright display to any project. Since the display uses 4-wire SPI t...

Run four solenoids, two DC motors or one bi-polar or uni-polar stepper with up to 600mA per channel using the L293D. These are perhaps better known...

Adding quality audio to an electronic project is surprisingly difficult. Here is a shield for Arduinos that solves this problem. It can play up to ...

Deprecation Warning: The Gemma bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So wh...

Testing 123! This 3" diameter speaker cone is the perfect addition to any audio project where you need an 8 ohm impedance and 1W or less of power. ...

This is a really nice power supply. It's a switching DC supply so its small and light and efficient. It is thin so it fits in power strips without ...

Here's a handy Arduino shield: Adafruit had a lot of people looking for a dedicated and well-designed data logging shield. We worked hard to engine...

FLORA is Adafruit's fully-featured wearable electronics platform. It's a round, sewable, Arduino-compatible microcontroller designed to empower am...

Just about all electronics use TTL serial for debugging, bootloading, programming, serial output, etc. But it's rare for a computer to have a seri...

This is a Lithium Ion and Lithium Polymer battery charger based on the MCP73833. It uses a USB mini-B for connection to any computer or 'USB wall a...

The DHT11 is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the ...

CdS cells are little light sensors. As the squiggly face is exposed to more light, the resistance goes down. When its light, the resistance is abou...

If you've ever ordered and wire up a 9-DOF sensor, chances are you've also realized the challenge of turning the sensor data from an accelerometer...

What's a project if it's trapped on your desk? Now you can take your Arduino anywhere you wish with the PowerBoost shield! This stackable shield go...