Looks like the trigger switch on the 3d chamelon has 5V. The rasp pi 3 gpio pins are only 3.3V. Does this mean I'll need some sort of mosfet or relay to send the correct 5V signal or will 3.3V suffice?

I am trying to do this as well with a raspberry pi 3b+ and klipper. When using the digital pin, do I just need to connect a single wire from the 3d chameleon control board to the pi?