I don’t know which reading is for what percentage power…
However, if at 100% it doesn’t read 5V you will never be able to tell the lps to run full power…
At this point all I can advise is to double check
You might need to adjust your spindle max RPM value ($30) to match the LightBurn default (1000) or vice versa. The value in LightBurn is called “S-Value Max”, in the Device Settings.
What is odd, is that 3.3V is the supply on some of these boards. What ever the board is running, the output has to be a 0 to 5V analog or digital pwm…
Other than that, I guess you’re looking at a new controller… don’t know what else to check.
Even with the 3.3V you should be drawing more than 5mA.
Have you done a TEM resonance or mode test?
Good luck
