vCard is an business card with 12 x 8 LED-Matrix (total 96 LEDs) and AVR microcontroller.
- Microchip ATmega328P with Arduino compatible Bootloader (optiboot)
- 12 x 8 LED-Matrix
- Power Supply: CR2032 (3V) / LIR2032 (3.6V) cell battery
- Schematics + Layout
- Note: When using an external power supply (eg via the FTDI port) always remove the battery.