Yesterday, 11:48 PM
(Yesterday, 07:55 PM)remiasz Wrote: Where to connect HC-SR04? It works on 5V and HT ports on 3V.
Maybe it's better to use 433M interface? 433M_T signal as trigger and DATA_R as echo. There is also 5V power supply on connector P2.
How to set PIN parameter?
Yes, HC-SR04 sensor output signal level is 5V or 0V. you can connect with 433MHz receiver data pin on PCB, that is 5v level.