lightningtalks-clock

Simple countdown timer for lightning talks

Features

Speaker or heralding volunteer can start timer with button
Display towards the audience and the speaker
Starts count on reset with a beep
Beeps at 1 minute left
3 beeps when timer reaches 0 and shows STOP on the display

Hardware

1 arduino uno
2 led matrix display
1 active beeper
remote reset button attached
power source for the arduino (powerbank)
a case

Future ideas

make time adjustable with hardware interface (rotary encoder?) -> for now hardcoded in software.