DIY laser scanner using step motors

A very basic attempt at an XY scanner, using stepper motors as galvos. Difficult to get anything other than wiggly patterns with this setup but it was fun.. I might try to make some proper galvos.... motors deflected over 1 step by continually energising one coil and modulating voltage applied to the other coil using digital potentiometers, p channel mosfets and arduino microcontroller. Held together with lego, zipties and super glue!
To YT: All content including music is created by me.

Category:

Science & Technology

Tags:

• arduino
• laser
• xy
• scanner

[mikejollie661751]

I try to do the same but it does not, what do you use for pcb?

[hotchk155]

@mikejollie661751 - this was just on breadboard... My advice is to try each step at a time... first make sure you are driving the digipots correctly from arduino by using a meter on them. Try using a normal pot of same resistance to check you can make the motor move before trying with digi pot.

[hotchk155]

I was using 5V... but these particular motors have a low number of steps (I think only 12 step in a full turn) so a single step gives a useful deflection. Does your step motor have more steps? I guess 100 or more is more usual, but would not be very usable for something like this

[mikejollie661751]

oo thanks you hear from me

[Fredasp]

Wich voltage did you put to energising continually?

I try to do it too, but I can't get '1 Step`. just a little movimente - like a vibration.

Help-me here please?