USB Audio DAC mod + LaserBoy Correction Amp

[keeperx]

i did not need to edit the gain in my software. i was able to do all adjustments with the pots.

[James Lehman]

i did not need to edit the gain in my software. i was able to do all adjustments with the pots.

What are you using to send the data to the DAC?

James.

[seanharrison]

After all this trouble, messing about with settings trying to get the image to look right, and checking over the OP-Amp and everything. Nothing would work, Until i pressed on the side of one of the galvo's. FFS, Image went clear.

All the problems i have been having were down to a fault galvo. This is the second pair of ScanPro20's i have had now, Both with the same fault. I'm really anoyed

I gonna have to speak to dave again

[Things]

:O!!!

I have the EXACt same problem with my Y galvo! It actually twists from the rest of the shaft!! I can tell if its moved tho, since it goes very noisy. You could try some epoxy, or actually screwing the galvo's to the mount to hold it?

Seems to be a pretty common problem unfortunately ...

[drlava]

Interesting problem, guys. Is the issue a bad galvo, or is the galvo just a little loosely mounted in the stage? If the latter, try tightening the lock bolt or putting a thermal conductive pad around the galvo tube so it fits more snugly.

[Things]

The galvo is secure in the mount, its the part of the galvo where the connection goes, that twists from the rest of the galvo, so its a bad galvo kind of issue.\

BTW, ITS INTERNATIONAL CAPS LOCK DAY

[James Lehman]

That explains the conversation I heard at SELEM about how the magnet cylinder has metal caps glued or press-fit onto the ends of it that extend out to make the shaft that rotates in the bearings and on one end holds the mirror.

There was a question about forming the magnet around a solid shaft or drilling a hole all the way through it.

Now I get it. I can see why they would need this.

James.

[seanharrison]

:O!!!

I have the EXACt same problem with my Y galvo! It actually twists from the rest of the shaft!! I can tell if its moved tho, since it goes very noisy. You could try some epoxy, or actually screwing the galvo's to the mount to hold it?

Seems to be a pretty common problem unfortunately ...

Hey things, Yeah that the same problem, Its been replaced one, Its completely stops working on mine tho, and its getting extremely hot so i cant run it anymore Going to send dave an email today

[seanharrison]

Interesting problem, guys. Is the issue a bad galvo, or is the galvo just a little loosely mounted in the stage? If the latter, try tightening the lock bolt or putting a thermal conductive pad around the galvo tube so it fits more snugly.

The galvo tube is mounted tightly. But the galvo its self is loose within the tube.

[keeperx]

What are you using to send the data to the DAC?

James.

i was using VLC.. you know that.. i was sending a white circle wave created in laserboy to the soundcard using VLC media player in 6 channel mode .. worked great