Board: Cohesion 3D
Problem/ Question: Hi,
I have a K40 with Digital Panel but I have installed an Ampmeter to check the proper mA the laser it shooting at.
I ran some tests with GBRL-LPC firmware and lightburn to see how it managed power but results are far from satisfying: I’ve create 10 rectangle, each one running at a different power (10% increments), but the results shows (also checking the Ampmeter) that actually from 100% to 60% the laser is always firing at 100% (15mA, that I have manually set as max power) and then it decreases reaching 6mA for the 10% rectangle (I was expecting a value closer to 1.5mA).
I have tried to change the PWM both in the confing.txt file (from 200 to 400) and in GBRL changing $33 from 5000 to 10000. In the first case nothing happens, in the second case the laser doesn’t even fire.
What could I do? Am I missing something?
Also, in the confing file I tried to change the laser maximum power from 0.8 to 1 to see if anything would happen but leaving the digital panel at 43% (which is the value I was setting it for shooting at 15mA) it still shoot at 15mA. Is it normal?
With GRBL should I always also change the confing.txt file or it doesn’t matter any longer?
Thank you very much for your support,