How to Build a Compact and Low Power Solid-State Relay to Control AC Home Appliances using ESP8266

The best alternative for an electromechanical relay is a solid-state relay. A solid-state relay is a type of semiconductor-based relay that can be used as a substitute for an electromechanical relay to control electrical loads.



In this project, we will make a Solid-State Relay using a single component and we will control an AC load in 230VAC operation. The specification used here is limited, we have chosen 2A of Load to be operated using this Solid-State-Relay. The aim is to build a compact PCB for a solid state relay that could be directly interfaced and controlled with the 3.3V GPIO pins of Nodemcu or ESP8266. To accomplish that we have fabricated our PCB boards from PCBWay and we will assemble and test the same in this project.
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Watch the video below: