Interesting.
So, looking at the PDF for the 4N25, I would just use connectors 4,5,6, with 6, base, going to my Arduino I/O. Do I still need a resistor between base and the Arduino?
Connections 1,2,3 would not be used for anything?
Thanks.
Interesting.
So, looking at the PDF for the 4N25, I would just use connectors 4,5,6, with 6, base, going to my Arduino I/O. Do I still need a resistor between base and the Arduino?
Connections 1,2,3 would not be used for anything?
Thanks.