Michał Kudela

@holger8080 Today i started the circuit soldering process. I will have a direct comparison with the inpeak power sensor. I'll be in touch in a few weeks.

Anyone have an idea where the problem may be? 

@rrrlasse I checked the baud rate of the HC-05 module with the AT command, everything is standard (9600). Uploading the program checking this module is exemplary. Bluetooth terminal - all...

@rrrlasse Thanks for the suggestions, I was able to fix the problem. I uploaded the program to arduino with the baud rate set to 9600, connected to the serial monitor...