May 22, 2021 by techiesms Smallest Home Automation Project using ESP32 Components used ESP32 Module5 Volts Relay x 4Hi-Link 5 volts Power SupplyAMS1117 3.3V regulator IC Couple of resistors – 10kohms & 330 ohmsTwo pin terminal connectorsBC547 transistor1N4007 diodes x 4Push buttonOn Off button Schematic ...