{"title":"Arduino bootloader-programmed chip (Atmega328P)","handle":"arduino-bootloader-programmed-chip-atmega328p","url":"/products/arduino-bootloader-programmed-chip-atmega328p","description":"A pre-programmed ATmega328P chip with the Adafruit 'ADAboot' bootloader, ready to drop into an Arduino Uno, Duemilanove, Diecimila, or NG board. Use it to replace a damaged chip or build your own Arduino-compatible project on a breadboard or custom PCB.\n\nThe ADAboot bootloader is compatible with the standard Arduino bootloader but includes a quick-start modification — after uploading a new sketch, it begins immediately without the usual delay. A 5-second delay still occurs after pressing reset or opening the serial port, but sending any character other than ASCII '0' will skip the delay and start the application immediately.\n\nKey Features\n\n\nPre-programmed ATmega328P – Ready to use with no additional programming required\n\nADAboot Bootloader – Quick-start compatible with NG, Diecimila, Duemilanove, and Uno\n\n57600 Baud Upload – Fast sketch uploading speed\n\nAuto-Reset Support – Works with Arduino IDE version 009 and later\n\nDrop-In Replacement – Standard DIP-28 package fits existing Arduino sockets\n\n\nCompatibility\n\nArduino Uno\nArduino Duemilanove\nArduino Diecimila\nArduino NG\nFreeduino and compatible clones\n\n\nPackage Contents\n\n1× ATmega328P with ADAboot bootloader\n\n\n\nTip: Select \"Duemilanove with ATmega328\" in the Arduino IDE when uploading sketches to this chip.\n\n\nResources\n\nChip Upgrade Instructions (Adafruit Learn Guide)\n","vendor":"Adafruit","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":11431,"title":"Default Title","sku":"AF-123","price":11.75,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}