A microcontroller is a small computer device by itself that can be programmed to respond on it's input and output signals. As sizes gets smaller with variants of I/O count and computer power, application of microcontrollers on wearables are endless.

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Adafruit GEMMA v2 - Miniature wearable electronic platform

GEMMA is a tiny wearable platform board with a lot of might in a 1" (25.4mm) diameter package. Powered by a ATtiny85 and programmable with an Arduino IDE over USB, you'll be able to realize any wearable project!

$14.40

Adafruit Trinket - Mini Microcontroller - 5V Logic

Trinket may be small, but do not be fooled by its size! It's a tiny microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of power.

$12.50

Adafruit Trinket - Mini Microcontroller - 3.3V Logic

3.3V Trinket. It's a tiny microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of power.

$12.50

FLORA - Wearable electronic platform: Arduino-compatible

This is a wearable electronic platform for Adafruit's community of makers, hackers, crafters, artists, designers and engineers

$32.50

Arduino LilyPad USB - ATmega32U4

The LilyPad Arduino is a microcontroller board designed for wearables and e-textiles. It can be sewn to fabric and similarly mounted power supplies, sensors and actuators with conductive thread.

$42.95

Arduino Mini 05

The Arduino Mini is a small microcontroller board originally based on the ATmega168, but now supplied with the 328.(datasheet), intended for use on breadboards and when space is at a premium. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 8 analog inputs, and a 16 MHz crystal oscillator. It can be programmed with the USB Serial adapter or other USB or RS232 to TTL serial adapter.

$34.95

Arduino Mini 05 without headers

The Arduino Mini is a small microcontroller board originally based on the ATmega168, but now supplied with the 328.(datasheet), intended for use on breadboards and when space is at a premium. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 8 analog inputs, and a 16 MHz crystal oscillator. It can be programmed with the USB Serial adapter or other USB or RS232 to TTL serial adapter.

$31.95

Electric Imp - WiFi SD Card

We know what you’re thinking, “What’s the big deal? Looks like an SD card…” Well this is no SD card! The Electric Imp is a WiFi enabled development platform powered by a Cortex-M3 processor core. “Really?” Yup.

$31.95

Laser Module - Red with TTL Control

This is the basic laser card module with circuitry built in so that it can be turned on/off with a TTL signal. Includes polarized Molex connector to prevent reverse connection.

$14.95

MP3 Trigger

The MP3 Trigger board is built to make it MP3 sound integration easier than ever. The board has 18 external trigger pins that will directly trigger pre-selected MP3 tracks saved in the SD card

$51.95

Fingerprint Scanner - 5V TTL (GT-511C1)

We’ve found this great fingerprint module from ADH-Tech that communicates over TTL Serial so you can easily embed it into your next project.

$49.85

Raspberry Pi - Model B+

The credit-card sized computer is capable of many of the things that your desktop PC does, like spreadsheets, word-processing and games. It also plays high-definition video. It can run several flavors of Linux and is being used to teach kids all over the world how to program… Oh yeah, and it does all that for under $50.

$49.95

ATmega328 with Arduino Optiboot (Uno)

An ATmega328 in DIP package, pre-loaded with the Arduino Optiboot (Uno 16MHz) Bootloader. This will allow you to use Arduino code in your custom embedded project without having to use an actual Arduino board.

$7.95

LilyPad MP3

The LilyPad MP3 Player is your all-in-one audio solution, containing an Arduino-compatible microcontroller, MP3 (and many other formats) audio decoder chip, micro-SD card socket, and a stereo audio amplifier. Part of the Lilypad E-textiles line, this board can be used to give your fabric creations the gift of music, or any other sounds you can put on a micro-SD card.

$59.50

Bare Conductive Touch Board

Capacitive touch, distance sensing, MP3, MIDI & more on the Arduino-compatible Touch Board

$149.45