IOs 5V_ext pin not working
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Hello,
I am using a Duet 6HC to control a custom 3D-printer.
I am trying to control a pressure controller, which requires 5V signals. I would like to use the 5V_ext pin from one of the IOs. However, measuring it (5V_ext to GND) shows OL. The 12V derived internal 5V seems to working (red status light).
Now, I am wondering if the 5V_ext pin only supplies 5V if an external 5V power supply is connected?
Thanks in advance!
Best, Felix
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I seem to recall there is a jumper that determines what appears on that pin.
Did you check it?
Did you check
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@FelixUCF which version 6HC board do you have?
The 5V_ext supply on the IO_ connectors of the 6HC is derived from the main 5V supply through a diode. Older 1HC boards that do not support 48V VIN also have a PTC fuse in that circuit. The 5V_ext voltage on the IO_ connectors will be missing if either the diode or the fuse is open circuit.
