ESP8266 Community Forum

- Fri Jun 24, 2016 11:49 am #49721

Left hand of first mosfet to ground (5v)
Middle of first mosfet not connected
Right of first mosfet to 5v (with 10k resistor)
Right of first mosfet to each of the 3 legs of second mosfet

Left hand of second mosfet to ground
Right to IN of the relay
VCC of relay to 5v
Ground of relay to 5v

Nope !

The "Right of first mosfet to each of the 3 legs of second mosfet" is wrong.
It should be "Right of first mosfet to middle leg of second mosfet".

And why this last one "Ground of relay to 5v" ? it is already connected to "Right to IN of the relay" ...

- Fri Jun 24, 2016 11:58 am #49722 I had asked before if my understanding was correct of the schematic so was following that as I was told it was

Ok will change that now and the for the last part of your question, the relay has 3 pins, IN, VCC and ground the ground of the relay is connected to 5v ground.

Last edited by Joe Job on Fri Jun 24, 2016 12:02 pm, edited 1 time in total.

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- Fri Jun 24, 2016 12:01 pm #49723 Left hand of first mosfet to ground (5v)
Middle of first mosfet not connected
Right of first mosfet to 5v (with 10k resistor)
Right of first mosfet to 2nd leg of second mosfet

Left hand of second mosfet to ground
Right to IN of the relay
VCC of relay to 5v
Ground of relay to 5v ground

Still no the green light is on as soon as plug in and you hear it turning on, connecting first mosfet middle leg to ground does nothing.

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- Fri Jun 24, 2016 12:05 pm #49724

Middle of first mosfet not connected

I've almost forgot since it was obvious for me :
"Middle of first mosfet not connected" should be "Middle of first mosfet pulled up to 3.3V" to simulate the GPIO2, with that the relay will turn off, and bring that pin to GND will turn it ON again.