I want to close a relay contact automatically every day at 2 AM local time for 2 seconds, and then open. I can do this manually right now, but want to know where I should put the commands to do this automatically. Please advise. Thanks!


Consider adding a cron job. Do:

crontab -e

and you will probably want a line such as:

0   2   *   *   *     /path/to/your/script/that/holds/relay/for/2/seconds

That will trigger the script at 0 minutes after hour 2, every day of every month and every weekday.

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