I am trying to get an arduino to switch on something on the Raspberry Pi with a Mosfet.
Would this layout work?
1
migrated from electronics.stackexchange.com Jun 23 '15 at 7:40
This question came from our site for electronics and electrical engineering professionals, students, and enthusiasts.
-
What is the MOSFET for? Why not just connect the PI and Arduino grounds and connect an Arduino gpio set as an output to a Pi gpio set as an input (with a resistor divider if it's a 5V Arduino)? – joan Jun 23 '15 at 8:00
2
Joan is right. If you are trying to have an output on the Arduino trigger an input on the pi, then you merely need to use 2 resistors and create a voltage divider to change the 5V out of the arduino to 3V. The mosfet is unnecessary.
(Alternatively, if you've got more than one pin to connect you could use a buffer IC like the 74HC4050.)
