Opta with ultrasonic sensor module doesn't work, I don't understand, I can use the echo and trigger pins like I do with Arduino uno
An Opta, interfaced to an ultrasonic sensor? How fascinating!
Please post the details of how you wired it up and programmed it. A photo of the setup would be most interesting.
For suggestions on posting, the "How to get the best out of this forum" tutorial is helpful.
I tested other sensors and I noticed that the 5 volt sensors don't read them digitally, why? I tried motion sensors, even a photoresistor but nothing digitally doesn't read them