/BigRedStopwatch

A huge stopwatch with two big red control buttons

Primary LanguageC

Stopwatch

What is it?

  • A huge stopwatch with two big red control buttons (start and stop)
  • Mainly intended for measuring time on an obstacle course

How does it work?

  • Each button and the display contain a radio module (RFM69)
  • Button presses are send to the display which calculates the time

Further features

  • USB charging of the integrated LiPo batteries
  • Retransmissions with time compensation if a radio packet gets lost
  • Simple highscore management