Devices: ELEGOO 8 Channel DC 5V Relay Module with Optocoupler Compatibility ESP32 5V 10A Mean Well LRS-50-5 Power Supply and a 5V 2A phone charger or 5V 1A phone charger I think this is my problem: When I check the voltage and amperage across my Ground and 3.3VIN pin on my ESP32, it reads 4.7V …

From the image, it looks the ESP32's CLK pin is connected to the VCC pin of the relay board. Did you mean to connect the relay VCC to the ESP32's 5V pin? Which would not be a good idea but that's your thing.

Unable to Power 8 Ch. Relay Board

Development Tools IDE 1.x

Paul_KD7HB September 21, 2021, 5:03am 12

All surface mount, now days.
Yes, I still use Thru-hole stuff for projects.
Paul

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Unable to Power 8 Ch. Relay Board

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