Can you manually trigger the relays with a 3.3v power source on the signal wire… not connected to the MCU at all, just 5v power and 3.3v to signal, shared ground.
Okay so here is the picture of my setup to test the relay.
wemos powered by 5v usb cable. 3v3 from there hooked to relay IN1.
relay is powered by gnd and 5v from make shift cable power from laptop usb. gnd from wemos was also connected to relay gnd.
when the 3v3 cable is not connected to in1, the relay has its green light lit. continuity is at 1
when the 3v3 cable is connected to in1, the relay has both its green and red light lit. along with the click sound, continutity goes to 0.06 which is basically 0 from 1.
Green is your power to the relay.
The red indicates that the relay circuitry has been successfully triggered via the 3.3-5v signal (your Wemos will only go as high as 3.3v)… Now whether or not it is fully triggered (usually determinable by a good solid click) is dependent on the coils 5v needs and the supply’s output current.
But I would say that it sounds like your relays are working fine and are triggered on HIGH.
Very Strange. It seems like it should be working. I understand your frustration.
If you keep the wiring configuration shown in the above picture, but move the IN1 line to D5 (GPIO 14) instead of 3V3, it does not work?
I suspect these things are correct (as it sounds like it works with an LED) but just to confirm.
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Button Widget is set to SWITCH
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Button Widget is set to Virtual Pin 0
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Button Widget is set to output 1 when pressed\
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You are connected to BLYNK
Other than that I am at a loss. Sorry.