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12-15 volt DC polarity reversing Switch  


Active Member
Joined: 8 months ago
Posts: 5
2020-06-30 4:27 pm  

I use an Arduino, a IR sensor and a relay to stop a trolley at the tracks destination. Once stopped,

I need an electrical switch to automatically reverse the polarity so the trolley heads in the

opposite direction after the relay has concluded a pause. I can do this mechanically with a Tortoise switch machine, but why?

Something simple must be available in the plug and play department that can replace a mechanical

toggle switch (On)-(Off)-(On) automatically??

Thank you for responding, joel

Active Member
Joined: 2 months ago
Posts: 7
2020-07-01 11:45 pm  

Have you considered using your existing relay to trigger another relay which could supply reversed polarity to your device after your built in delay?