We sure love the ATmega328 here at Adafruit, and we use them a lot for our own projects. The processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore - just enough for most simple projects. When we need to go small, we use a Pro Trinket 3V or 5V, but when size isn't as much of a concern, and a USB-serial converter is required, we reach for an Adafruit METRO . METRO is the culmination of years of playing with...

FLORA is Adafruit's fully-featured wearable electronics platform. It's a round, sewable, Arduino-compatible microcontroller designed to empower amazing wearables projects.FLORA comes with Adafruit's support, tutorials and projects. Check out dozens of FLORA tutorials on the Adafruit Learning System, with more added all the time! The FLORA is small (1.75" diameter, weighing 4.4 grams). The FLORA family also has the best stainless...

USBtinyISP is a simple open-source USB AVR programmer and SPI interface. It is low cost, easy to make, works great with avrdude, has both 6 and 10 pin standard ISP cables, is AVRStudio-compatible and tested under Windows XP and MacOS X, it may or may not work with your specific Vista/Windows 7 system, please visit the Adafruit forums before purchase. Using this programmer and avrdude you can program any in-circuit "serial" programmable...

The Teensy 2.0 is a complete USB-based microcontoller development system, in a very small footprint! All programming is done via the USB port. No special programmer is needed, only a standard "Mini-B" USB cable and a PC or Macintosh with a USB port. This is the latest version, 2.0. Key Features: USB can be any type of device AVR processor, 16 MHz Single pushbutton programming Easy to use Teensy Loader application Free software...

Toss out those FTDI cables and go USB-native with the ATmega32u4. After many months of back-orders, we finally received a shipment of these little guys and are excited to offer our breakout board. The little dev board keeps it simple, with just the bare essentials: Atmega32u4 - AVR core with USB capability. 32K flash, 2.5K RAM running at 16MHzStandard AVR 6-pin ISP connector for direct programming (when you need the extra space)Big...

The Teensy++ is a complete USB-based microcontoller development system, in a very small footprint! All programming is done via the USB port. No special programmer is needed, only a standard "Mini-B" USB cable and a PC or Macintosh with a USB port. Its the big sister version of the popular Teensy board we carry, this board has tons of FLASH, RAM, pins and more. This is the latest version, 2.0. Key Features: USB can be any type of...

We took the business-card-sized AVR target board from Evil Mad Scientist Laboratories and added a few components to make an AVR dev board that has only the bare minimums! Comes unassembled with: Printed circuit board Blank ATMEGA328 with internal 1 MHz oscillator selected (default) 28-DIP socket 6-pin ISP AVR programming header 0.1uF ceramic capacitor 5mm diffused red LED Resistor for LED We suggest using this board in conjunction with a...

This is just the microcontroller burned with the USBtinyISP firmware code. If you're buying a kit, this is included. This is intended for people who are buying just the PCB or are experimenting with the kit and want a backup chip.

Programming AVR? Always Googling the pinout? Well, now no longer! It's rare to find a mini kit so elegant, it deserves its own Haiku. A simple breakout, 2x3 box header in the center, two 1x3's on the side. Plugs into any breadboard for neat wiring (in both nifty and clean senses of the word). Comes with a quality mini PCB, a 2x3 box header and a small stick of 0.1" header. Requires some light soldering to use: plug the 2x3 in on the...

Trinket's got a big sister in town - the Pro Trinket 5V ! Pro Trinket combines everything you love about Trinket with the familiarity of the common core Arduino chip, the ATmega328. It's like an Arduino Pro Mini with more pins and USB tossed in, so delicious. Trinket's a year old now, and while its been great to see tons of tiny projects, sometimes you just need more pins, more FLASH, and more RAM. That's why we designed Pro...

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. We wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. Perfect for when you don't want to give up your expensive dev-board and you aren't willing to take apart the project you worked so hard to...

As of October 9th, 2015 the 5V Trinket comes with a micro-USB connector instead of a mini-USB connector! 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. We wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. Perfect for when you don't want to give...

The Adafruit Feather nRF52 Bluefruit is our latest easy-to-use all-in-one Bluetooth Low Energy board, with a native-bluetooth chip, the nRF52832!  It's our take on an 'all-in-one' Arduino-compatible + Bluetooth Low Energy with built in USB and battery charging. We have other boards in the Feather family, check'em out here. This chip has twice the flash, SRAM and performance of the earlier nRF51-based Bluefruit modules. Best...

The Arduino Uno R3 is the latest version after the Duemilanove with an improved USB interface chip. Like the Duemilanove, it not only has an expanded shield header with a 3.3V reference and a RESET pin (which solves the problem of how to get to the RESET pin in a shield) AND a 500mA fuse to protect your computer's USB port, but ALSO an automatic circuit to select USB or DC power without a jumper! The Uno is pin and code-compatible with...

Trinket's got a big sister in town - the Pro Trinket 3V! Pro Trinket combines everything you love about Trinket with the familiarity of the core Arduino chip, the ATmega328. It's like an Arduino Pro Mini with more pins and USB tossed in. Trinket's a year old now, and while its been great to see tons of tiny projects, sometimes you just need more pins, more FLASH, and more RAM. That's why we designed Pro Trinket, with 18 GPIO, 2...

We sure love the ATmega328 here at Adafruit, and we use them a lot for our own projects. The processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore - just enough for most simple projects. When we need to go small, we use a Pro Trinket 3V or 5V, but if you want to have USB-to-Serial built in, we reach for an Adafruit METRO Mini . METRO Mini is the culmination of years of playing with AVRs: we wanted to make...

Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores. This is the  Adafruit Feather 32u4 Bluefruit  - our take on an 'all-in-one' Arduino-compatible + Bluetooth Low Energy with built in USB and battery charging. Its an Adafruit Feather 32u4 with a BTLE module, ready to rock! We have other...

Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores. This is the  Adafruit Feather 32u4 FONA  - our take on an 'all-in-one' Arduino-compatible + audio/sms/data capable cellular with built in USB and battery charging. Its an Adafruit Feather 32u4 with a FONA800 module, ready to rock! We...

Metro is our series of microcontroller boards for use with the Arduino IDE. This new Metro M0 Express board looks a whole lot like our original Metro 328, but with a huge upgrade. Instead of the ATmega328, this Metro features a ATSAMD21G18 chip, an ARM Cortex M0+. It's our first Metro that is designed for use with CircuitPython! CircuitPython is our beginner-oriented flavor of MicroPython - and as the name hints at, its a small but...

Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores. This is the Feather 32u4 Basic Proto, it has a bunch of prototyping space built right in We have other boards in the Feather family, check'em out here! At the Feather 32u4's heart is at ATmega32u4 clocked at 8 MHz and at 3.3V logic, a chip setup...

Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores. This is the  Adafruit Feather 32u4 Adalogger  - our take on an 'all-in-one' datalogger (or data-reader) with built in USB and battery charging. Its an Adafruit Feather 32u4 with a microSD holder ready to rock! We have other boards in the...

We sure love the ATmega328 here at Adafruit, and we use them a lot for our own projects. The processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore - just enough for most simple projects. When we need to go small, we use a Pro Trinket 3V or 5V, but when size isn't as much of a concern, and an USB-serial converter is required, we reach for an Adafruit METRO. This is the Adafruit METRO with headers....

Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores. This is the  Adafruit Feather 32u4 Bluefruit with Headers - our take on an 'all-in-one' Arduino-compatible + Bluetooth Low Energy with built in USB and battery charging. Its an Adafruit Feather 32u4 with a BTLE module, ready to rock! We have...

  Be the life of your (hackerspace) party when you show up with this six-pack! Get 6 Trinkets at 12% off - comes with 3 x 3V Trinkets, and 3 x 5V Trinkets. As of October 12th, 2015 the 6-pack now includes three revised 3V Trinkets and three revised 5V Trinkets with micro-B USB connectors rather than mini-B.

Feather is the new development board from Adafruit, and like its namesake it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores. This is the  Adafruit Feather 32u4 Bluefruit  - our take on an 'all-in-one' Arduino-compatible + Bluetooth Low Energy with built in USB and battery charging. Its an Adafruit Feather 32u4 with a BTLE module, ready to rock! We have other...

The Arduino Mega 2560 is a microcontroller board based on the ATmega2560 (datasheet). It has 54 digital input/output pins (of which 15 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...

Would you like to add powerful and easy-to-use Bluetooth Low Energy to your robot, art or other electronics project? Heck yeah! With BLE now included in modern smart phones and tablets, its fun to add wireless connectivity. So what you really need is the new Adafruit Bluefruit LE Micro - it's an Atmega32u4 chip (same as used as in the Adafruit Flora or Arduino Leonardo) plus our SPI Bluefruit LE Friend in one. Bluetooth...

Squee ! It's the cutest, tiniest little Arduino yet! The Arduino Micro packs all of the power of the Arduino Leonardo in a 1.9" x 0.7" (48mm x 18mm) size. Although it may look like a stick of gum, its actually a USB-native 8-bit microcontroller, with 32K of flash, and 2.5K of RAM. You can program it directly via the USB micro connector on one end (or for the advanced users, the 6-pin ISP header). The Arduino Micro is a...