This circuit is called a relay driver circuit, which is highlighted in the circuit diagram above. Learn more about relays here. Simulation of Flasher Circuit When the circuit is powered, the 555 Timer ...

So, you can easily make this home automation project at home just by using an ESP32 and relay module. Or you can also use a custom-designed PCB for this project. This is the complete circuit diagram ...

Problem 2: Relay Module Design I designed a relay module circuit using SRD-05VDC-SL-C (5V) based on my student ID. I identified and defined the BJT and diode used in the circuit. I created a ...