I have an Eleksmaker A5 clone with a 2000mW 445nm laser. I have it working well for B/W engraving/cutting but have a weird issue when using a power scale chart to set up greyscale. I’ve set up a grid of boxes as per the tutorial with speeds and powers on the two axes, 3000-600 mm/min and 10%-100% power set by using the power scale feature.
When it hits the 20% power box (G1XwhateverS51) the stepper pauses, gives off a ‘squeak’ then carries on with the next box, having missed steps. Every time it gets to that box it loses more. I can change the power to 25% for that column, or delete it, and the grid prints completely OK. I can manually pick any other box and set that one to 20% with power scale (100% power, 20% scale) and it does it on that one instead.
I have compared the gcode and it’s literally only the power (the S51) that changes. I don’t understand it - I can move faster or slower, or use higher or lower powers successfully. Any ideas?