Hey all you Plus controller owners, I need some answers. I have a Plus Controller and the power upgrade board. However, when the controller is powered from the CNC it is limited to 50% brightness. Here are the screen brightness page and the version page which shows the voltage. Are you seeing this? I asked support and sent them these photos but have not gotten any response.
If that is how it is supposed to be I am cool with it but if I have an issue I want to know now and not find out later when the warranty is gone.
I just heard back from support and this is the expected behavior. The CNC board is limited in the power it can deliver even with the fix.
If you need full brightness you will need a USB-C supply that can deliver over 3 amps at 5 volts. Do NOT go by the wattage of the supply. You must check the amperage output at 5 volts specifically. USB-C can operate at several different voltage levels so even if the supply has enough power overall, it does not mean the supply will deliver it at 5 volts. Attached are 3 supplies. A 90 watt, a 112 watt and a 130 watt. One would think the 130 watt would supply the 3 amps at 5 volts. But if you look close you will see that it is limited to 1 amp at 5 volt.
