Features:

  • Samd11C14 32bit ATMEL ARM with USB bootloader
  • easy update firmware, just plug to USB
  • 2 x buttons +/-
  • 1 x PWM power out
  • 1 x analog input
  • 20x Charlieplexed 3014 leds
  • missing segment F on first digit, you can display only numbers from 00 to 399
    for full display needed 21LED bud charlieplexing with 5GPIO can drive only 20leds
  • easy pack in heat - shrink tube
  • based on DIXI https://hackaday.io/project/10210-dixi-arduino-sam-d11-usb-stick