When you Press the RESET Button on the Arduino board, the timer will countdown from 60 seconds, as programmed. Once the timer countdown reaches 0 seconds, the PIEZO-BUZZER (BZ1) will bang on and the ...

Raspberry Pi programmable timer “To make things more interesting, you can modify the provided source code, and re-program the Ninja Counter itself using an external Arduino Uno!

Arduino Strikes Again, This Time in Vintage Form. By Zohra Ashpari. Sep 26, ... a GPS receiver, and an 8-relay board, along with some other bits and pieces. Time is calculated using the GPS, ...

I did time-lapse photography for one of my internships, and there is a way to do that without having to program/build with Arduino (love the concept though and will be investigating this).

Posted in Arduino Hacks Tagged arduino, relays. ... Relays also don’t like to be switched at 10 Hz for for a long time … With 1 million rated contact makes/breaks, they will last 1 day at 10 Hz.