Duration: 39:36

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Michael Baddeley R2D2 files:
https://www.patreon.com/mrbaddeley
Astromech web site, information on all aspects of droid building (membership required to view but it's worth it for the vast amount of information available):
http://astromech.net/

Darren Poulson's blog, discussing the use of a relay to disconnect the foot motors from the Sabertooth motor controller:
https://r2djp.co.uk/2022/06/29/to-relay-or-not-to-relay/

There are a lot of different types of relays, please do your research before using one. I am not even close to being an expert in electronics, so use the information I present here at your own risk.

I hope I didn't ramble too much, and that I was able to get across the basic information on how the relay I've chosen to use works and how it should be wired to prevent any regeneration current from the foot drive motors damaging the Sabertooth motor controller.