Speech Timer

This Speech timer allows the speaker names to be entered if required. The planned speech duration is entered over a range of 2 to 15 minutes.
A green indictor is on when the Strat button is pressed. The amber indicator turns on when the elapsed time reaches 1 minute before the planned time. The red indicator comes on when the elapsed time exceeds the planned time.
Bluetooth connection may be made to an external set of lights. Make your own - PCB available on e-bay.