In this post we are reviewing the ESP-01 Wi-Fi Relay Module. It is one of the cheapest smart switches you can purchase currently for making smart home, ...

See the circuit board that I have taken out of the shell. Using this relay unit might kill your precious M5Stack Atom Lite sooner or later. A bit scary, so now let me share my random thoughts about it ...

For that reason, [Hulk] designed a simple relay module in order to cut the amount of time he spends implementing this solution in his various other projects.