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This project is How to Make PCB 2-Channel 5v Relay module For Arduino  at home.

 The schematic is here:


All components that I used are DIP.

please note if you wouldn't want to use external source for relays, just connect RY_VCC to VCC.

Bill of materials used in this project

Diode 1N4001
2
3 Poles Terminal Block Connector
2
Male Pin Header 3P
1
Male Pin Header 4P
1
Relay 5v (SDR-05VDC)
2
LED 3mm
2
S8050 BJT Transistor
2
1K-ohm resistor (1/4W)
2
560ohm resistor (1/4W)
2
EL817C Optoisolator
2
Mar 21,2020
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