I do believe I damaged those inputs with the TTL interface current when open.
My plan is to get small 12 v relays (motion sensors are 12v powered)
and use them to provide true dry contact output. Then rewire the 12v through the sensor output contact to the relay coil to provide a true dry contact and then wire to unused input contacts on the Pico, again using pullup mode for input.
My plan is to get small 12 v relays (motion sensors are 12v powered)
and use them to provide true dry contact output. Then rewire the 12v through the sensor output contact to the relay coil to provide a true dry contact and then wire to unused input contacts on the Pico, again using pullup mode for input.
Statistics: Posted by shore — Fri Aug 30, 2024 1:22 am