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by blackfawn 2228 days ago
I'd recommend driving a FET or two to connect at the push button(s) (i.e. GPIO is "pushing the button") rather than the relay board to drive the motor. Not only is jumping the switch(es) more simple, you also stay on the low voltage side of things and any safeties built in would still be present.

ETA: by push buttons, I mean the "normal" garage door buttons that would open and close the door (typically on a wall in the garage.) these typically use some low power, e.g. 12-20V. And the safeties the manufacturer would have built in would still work as it'd be as if you were pressing the manufacturer's open/close button, but remotely.

1 comments

There's no safeties built in according to their schematic they're directly spinning the motor at full speed with no current monitoring or feedback to the actual position of the door.
Exactly. What I'm saying is they should NOT be driving the motor directly like they've drawn up but instead, they should be "pressing the button via GPIO" on the real door opener attached to the garage wall.