Preprogrammed AVR Microcontrollers

Preprogrammed microcontrollers for all your favorite Evil Mad Scientist Laboratories projects. (If you are looking for "raw," unprogrammed microcontrollers, please start here.)

Chips are types ATtiny85-20PU, ATtiny2313A-PU or ATtiny4313-PU, ATmega164P-20PU, ATmega328P-PU, and ATmega644A-PU. All come in standard DIP (through-hole) form factor: all are 0.3" wide except the ATmega164P and ATmega644A, which are 0.6". See note below(*) if you need chips for an Arduino Uno.

Want one that's not listed here? Contact us and we'll see if we can help.

• ATtiny85 for Mega Menorah 9000
• ATtiny2313 for Deluxe LED Menorah
• ATtiny2313 for Deluxe Breadboard Menorah
• ATtiny2313 for a Larson scanner
• ATtiny2313 for a Larson scanner-extended
• ATtiny2313 for Microreaderboard
• ATtiny2313 for LED Mini-Menorah
• ATtiny2313 for Snap-o-lantern
• ATtiny2313 for Rovin' Pumpkin
• ATtiny2313 for Art Controller
• ATmega164 for Octolively
• ATmega164 for Interactive Game of Life
• ATmega328P for Tennis for Two
• ATmega328P for LED Lissajous figures
• ATmega328P for Bulbdial Clock
• ATmega328P for Accelerometer
• ATmega328P with Arduino firmware*
• ATmega328P with Arduino Uno firmware*
• ATmega328P for Peggy 2
• ATmega328P for Meggy Jr RGB
• ATmega644A for Alpha Clock Five

*Note on Arduino firmware: When we say "Arduino firmware," we are referring to the "original" Arduino bootloader, as used on the Arduino Duemilanove, Arduino Diecimila, prior Arduino versions, and most other Arduino-compatible systems, including Diavolino, Peggy 2, Meggy Jr RGB, and Bulbdial Clock kits, all of which used FTDI-based USB interfaces.

Note however, that the Arduino firmware is not compatible with the Arduino Uno, which requires a new bootloader. If you need to swap your chips into an Arduino Uno for programming, please select the Uno-compatible bootloader chips above.