Board with relays and MYSX connector
Switch up to 4 channels:
- MYSX_D10 Relay 1;
- MYSX_D9 Relay 2;
- MYSX_D6 Relay 3;
- MYSX_D5 Relay 4;
Analog | digital sensors via 3 pin JST 1mm connector:
- MYSX_D4 J5;
- MYSX_D3 J6;
I2C (4 pin JST 1mm connector)
- MYSX_D7 SCL;
- MYSX_D8 SDA;
- PSU HI-Link HLK-PM01 | AliExpress | Datasheet
- Relay SRD-05VDC-SL-C x4 | AliExpress 50 pcs | Datasheet
- ULN2003 | AliExpress 10-20 pcs | AliExpress 50 pcs
- 3P 5mm Termianl KF301-5.0 3P x4 AliExpress 10 pcs
- 2P 5mm Termianl KF301-5.0 2P x1 AliExpress 10 pcs
- Varistor VDR-07D471 (S07K300) aliexpress | chipdip
- Fuse 10mm 0.25A aliexpress
- Caps
C1 470-1000 uF 10v
C2 0.1uF 1206
- Resistors
R1-R4 1K 0603
R5 1K 0603
- LED 0603 aliexpress
LED1-LED4 yellow or red (or your favorite color) indicate relay state
LED5 green (or your favorite color) indicate power on
- 1x10 pinheader | PBD-20 | DS1023-2x10 aliexpress
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Make or order PCB
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Solder it together
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Connect MCU board with relay firmware
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Enjoy !