Opta with ultrasonic sensor module

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