Obrigado Gustavo. I'm develop a wireless fencing scoring system for our club (esgrima) and the wireless part of the system is working very well with ESP32 wonting on ESPNOW, except for the "lack of common ground problem". I need to cancel all the hits to the hand guard and was hopping to do this by ...

Hello Gustavo. Thank you for sharing this project with the community.
I have a question: what would be the shortest time for sampling a frequency? Can it be in the ms range of time?
Greetings form Portugal
Luis