@alankilian Thank you! Got those IOs working now that I have a fan wired-up!

Hello!

I know this is probably a very basic question, but this is my first time using a Duet expansion board, so I'm unsure what the expected behavior is or if I'm making a simple mistake.

My 1LC board appears to be powered and connected to my Duet 5 (via CAN) to my main board correctly (M115 B121 returns "Duet TOOL1LC firmware version 3.3")

I'm trying to control individual IOs, so I would expect the following to set the out0 high. However, I'm not seeing any change in output voltage (same results with out1 and out2).

M950 P0 C"121.out0"
M42 P0 S1

I'm also measuring 5V at all the inputs (io0.in, io1.in, io2.in) but as far as I can tell, there's no pull up resistor on these inputs.

Am I doing something incorrectly?