Hi,
I assembled a SCANLSP20 and I'm using an arduino to control it. My problem is drawing circles they come out with som pointy edges like the ones in the photo
Does anyone know what is happening? Can you help me please?
Have you scoped your arduino output to verify you are sending proper signals to the scanner amps? That would be my guess. It looks like the pulses are somewhat periodic in X time. Almost as if you have a square wave riding on your Y output. Since scanners are analog devices, that strongly suggests that the problem is not with them. So, my guess is something funky is going on with your arduino output. How are you converting the arduino output to analog voltages? Hopefully, not PWM.
I don't have an oscilloscope to make a proper diagnostic from the output wave. The wave is analog it sent from a 12 bit DAC that is connected to the arduino. I'll probably try changing the DAc it might be having some output problem to the Y axis.