Phone-controlled four-switch board

I want to build a four-switch board on an ESP32 with a 4-channel relay module and a phone web page with four buttons that remembers each switch state.

Buy all on Compoden (COD available)Start this build on Soldr

Parts

ESP32-DevKitC V4 (30-pin CP2102) In stock
4-Channel 5V Relay Module with Optocoupler In stock
Dupont Jumper Wire Kit (M-M, M-F, F-F, 20cm, 22AWG, ) In stock
USB A to Micro B Cable 1m In stock

Pins, wiring and code

The pin table, the wiring steps and the code for this build are in Soldr. Start this build on Soldr - you can change it before you buy.