When I was traveling by bike a few days ago, I noticed that my wireless bike computer stopped working. The quick method of repair by battery replacement unfortunately didn’t bring the desired success.
To find out which part was defect - receiver or transmitter - I decided to construct a diagnose device for checking wireless bike computer.
How to do this you can read in the attached documents.
Piezo speaker added to the circuit to get an acoustically feedback also.
English and german documentation corrected.