Garage Door Contact Sensor keep changing
Hello,
I just brought Garage door opener. Problem is whenever I put the sensor cable in the board the contact sensor flipping between open and close. Could it be faulty unit ?
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Relay Switch
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Switch state reversed
Since updating from 0.80 to 0.81/82 a couple of weeks ago the relay state is revered. On = Off??? Tried lots of different power on states and settings.
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Minimum voltage? Mini relay with 24V AC?
I am looking for a solution to make my door bell smart. The mini relay switch would fit the bill if it could work under 24V AC instead of 100 to 240V AC.
Is there a schematic of the power supply of the mini relay available to see if it could be modified to accept 24V AC? Or is there some similar modules with switch input and relay output that work under 24V AC?
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I can’t reset mini relay switch
the mini relay switch blink and I can't reset. This situation had occurred with 2 relay and I can't use the device.
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I encountered the same issue. Board looks fine. Initially I suspected a faulty pull-down resistor and tried adding another 10k resistor to GND - same result.
Turns out the long cable which I routed along the metal track of the opener was acting as an antenna.
I solved the false triggering by replacing the reed switch with a micro switch that would switch the GPIO firmly to 3.3V (like the existing switch) and GND. To get to GND I drilled a hole in the enclosure and soldered a wire to one of the marked GND connections. Using the metal track of the garage door opener to carry GND worked well for me.