Yesterday evening I have build a small relays for switching high voltage lines with my Arduino. It uses the "Blink" example and switches on for 10 seconds then switches off for 10 seconds. I have used this document to get my work done.

Arduino Relays off
Relays switched off.

Arduino Relays on
Relays switched on.

Zoomed view

Permalink: https://hanez.org/2009/03/07/arduino-relays/

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