OpenGarage › Forums › OpenGarage Firmware › Second Sensor for One Door 2 Car › Reply To: Second Sensor for One Door 2 Car
February 20, 2019 at 5:10 am #1435
Apparently ESP is 5v tolerant, at least according to CEO Mr Teo Swee Ann. That said, 2.2k resister on echo is a good idea if you don’t have a HC-SR04+
I’m in the process of building a hobo twin sensor right now using one wire hack (and newping)… will report on results.