1. garudaone

    How to generate a short pulse(5~50ms) when a switch is on

    Hi, I have a water level sensor is NO/NC type which will disconnect when water is full and connect when water is empty and I want to send a short pulse when water is full and when it's empty. I have a RF433 module which has 2 keys. If I connect a key to VCC, it'll send a code to its...