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2024-10-29 7:28 am
Hi. I just bought a relay module, and I'm not too sure about the JD-VCC GND in relation to VCC GND. If I'm using a separate power supply for JD-VCC, do I have to connect the two GNDs? Or do I even need the VCC GND at all?
2024-10-29 3:03 pm
Hi. I just bought a relay module, and I'm not too sure about the JD-VCC GND in relation to VCC GND. If I'm using a separate power supply for JD-VCC, do I have to connect the two GNDs? Or do I even need the VCC GND at all?
Post specs or a link so we can look up the answer.
First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, 360, fairly knowledge in PC plus numerous MPU's & MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
My personal scorecard is now 1 PC hardware fix (circa 1982), 1 open source fix (at age 82), and 2 zero day bugs in a major OS.
2024-10-29 8:13 pm
Usually, the inputs and outputs of a relay are isolated. But impossible to tell without more information or at least a picture.
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