PSU connected to pin 0.26 pulses when USB is unplugged?

Controllers Smoothie
1

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[[code]]switch.psu.enable true # turn atx on/off
switch.psu.input_on_command M80 #
switch.psu.input_off_command M81 #
switch.psu.output_pin 0.26o! # open drain, inverted
switch.psu.output_type digital # on/off only
switch.psu.fail_safe_set_to 1 # so the ATX turns off on a system crash[[/code]]

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I’m using the code pasted above in my config.
M80 turns on the PSU and M81 turns it off.
When I unplug USB (disconnect the 5v), my PSU pulses on and off nonstop.

Any suggestions? I may try using the MOSFET at 2.6, but I’d rather not if I don’t need to. (I already have a fan on 2.4 like the switch docs suggest using).

Imported from wikidot

2

I connected the +5VSB from the PSU to my board, seems to remedy all my issues!

Now I just need to get my power on switch working. :slight_smile: