Making another attempt to reactivate my OLED business card project. Due to lack of time and other priorities, I had to stop it for several months. I think that I’ve find an optimal hardware design and power source. Given limitations of ATtiny85, I started writing firmware in assembly, now I am starting it again in C.

The board on picture was assembled to allow me work at kitchen table while watching my kids :)

At the picture (left to right): Adafruit Monochrome 128x32 I2C OLED graphic display (SSD1306), 9V battery, DYI ATtiny85 dev board, AVRISP mkII programmer