ATMEGA1284P-PU with Arduino Bootloader. The P-PU version is pico power, low power. Genuine traceable European devices Arduino bootloaded and tested by myself. Complements my breakout board for sale elsewhere on Tindie. https://www.tindie.com/products/ScrolLed/atmega1284p-breakout-board/?pt=full_prod_search Not only will I supply the chip I will send documentation to explain how to see the boards for this chip in Arduino IDE 1.0.x and also 1.6.x, the latter IDE being a little bit more tricky to manipulate. Great powerful AVR micro with loads of inputs/outputs and 2 UARTS (serial connections) great for serial control of modems etc. Electrostatic precautions will have been observed with these devices and they will be packed onto carbon foam. Link to full 380 page datasheet below.