DIY Relay Module Making
by Creative creator in Circuits > Arduino
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DIY Relay Module Making
First Watch The Full Video Then You will understand Everything.
12V Relay
PCB Board
Any PNP Transistor
Use any PNP Transistor Which Can Handle 20mA At least.
I have used BC557
Link:
PC817 Opto-Coupler
Resistor
10k Resistor Link
1k Resistor Link
PCB Mount Screw Terminal Block
2 PIN PCB Mount Screw Terminal Block Connectors - Green
Push Switch
Push Switch Link https://ouo.io/3MeONr
Indicator LED
Green LED Link https://ouo.io/kIXm25