Hello all, I am trying to get one of the output pins from my Arduino pro mini to turn on/off a solid state relay. According to the specification for the SSR, it needs 5v in its pins for it to be enabled. The problem is that I have a 3.3v pro mini , so the output on its digital pins is 3.3v.
What I tried doing, is using a 5V PSU to power everything, and implemented this bi directional MOSFET ( https://www.hobbytronics.co.uk/mosfet-voltage-level-converter ) so when the pin of the arduino would be on, delivering 3.3v, then I would get 5V reaching the SSR.
I measure with my multimeter the Arduino output pin, I can read 3.3v, this is fine.
Without connecting the SSR, I measure the voltage in the drain pin from the mosfet, I get 5v, this is fine.
Now, when I connect the mosfert pin to the SSR, the voltage now goes down to 2.6v, and testing the SSR with a light bulb would cause it to flicker...
I have measured the load from the SSR if I connect it to the 5v directly, and it is about 7mA... Can anyone help me figure out how can I build this circuit?