Two output pins are not working in my smoothie board pin 1.31 and 1.22.

Controllers Smoothie
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1

Two output pins are not working in my smoothie board pin 1.31 and 1.22. I was using it to make TL active low. 1.31 was connected via a logic level converter to TL. It was working fine but today when I checked it it wasn’t. So i changed pin to 1.22 and checked it(1.22!^ 3.3V with out any command) and connected directly to TL. but no laser produced so I checked again But this time there was no voltage.
Any idea what could’ve caused the problem?

Now I’m using 1.23 through LLC and it’s working (for now)

2

+Peter van der Walt
I only changed the resistor in the PWM channel and it doesn’t have any problem. I didn’t modify any channel. If 5V is applied to a smoothie pin will it get damaged?

3

+Peter van der Walt TXB0104 https://www.sparkfun.com/products/11771

this won’t have any voltage division problem , right? like my current MOSFET LLC

4

+Peter van der Walt Can I directly connect PWM and laser fire PIN to smoothie(without level shifter ).
Would that cause any other problem other than reduction in laser power?