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Yes, an excellent, useful, and on topic discussion. Thank you everyone. After doing some verification on the way the rotation control bits in the data are being used in the emulator software, I have obtained the data only print of numbers 11 through 17 of Laserock Platinum. I'll try to get them...

I would be interesting in obtaining and using some or all of this within Spaghetti as a side bundle. I have been thinking of making part of Spaghetti free and this could be included in the free portion. Spaghetti is written in MSVC so I imagine it would integrate easily. Zoof, let me know what...

Make sure the PIC can drive the MOSFET gate capacitance in both source and sink , if Not use some sort of gate driver chip or a linear rated Mosfet. Some FETS are on/off or TTL rated, or Linear. The wrong choice means release of magic smoke from the FET. 555 or 556 without any other components...

One word. Liability.

... most important, even more important then laser-knowhow, is a specific medical/biological background, related to "laser-curing" human tissue and such! ... other wise your "long career in laser tattoo removal" won't last this long and other (mostly legal) issues will burden your income ... ...

if you do some digging Lee Valve has an app note using a 555 based circuit for a V1 pulse followed by a V2 hold. They place a zener in series with the anti-kick diode to allow some speedup during retraction. Lee valve app note Pic extracted attached. Steve

... non, je ne l'ai pas fait - mais j'aurais aimé le faire :cool: Viktor

Merci mais je recherche plutôt des lasers pico et femtosecondes as-tu ce genre de lasers ?

Roj, sorry I missed seeing your first link. The MPQ6610 is a pretty nifty device controller for relays, solenoids, brushed DCM's. Pay attention to it's RL load and max current load specs and which package is chosen, but it looks versatile. Wished we had this back in the day.

Just for the record the Mark VI had G-124 Scanners and an additional lumia panel. With the advent of Laserock they added a turret over the raw beam position that was used for "...Heart of the Sun" in Laserium I. And a fiber optic turret was added at another point. And at still another point they...

Good tip Steve, Thank you. Here is a photo which looks like the single scan glass tray of the Mark IV and the rotary solenoid.

Laser Images' Mark IV only had the single scan glass tray. The 3 scan glass per scanner was a Mark VI thing. When a Mark IV was upgraded to a Mark 600 the original head was mostly left alone. I think (hope!) they stripped out the 110VAC. The upgrade consisted of a new control panel, new or rewired...

Texas Instruments DRV110 and DRV120

... pas vraiment - professionnellement, je développe des applications laser, en privé, je monte de temps en temps des choses pour moi et j'ai "accumulé" pas mal de choses au fil du temps. Ce que j'aurais éventuellement plusieurs fois (ou plutôt beaucoup), ce sont des diodes laser 975nm couplées...

Super ! Merci Viktor ! As tu des laser à vendre que tu as en double ?

Super ! Merci Vicktor ! As tu des laser à vendre que tu as en double ?

... ci-joint quelques photos. Viktor

Très intéressant ! Je n'ai jamais vu un module avec autant de diodes lasers. As tu des photos des diodes de plus près ça m'intéresse de voir.

Exactly what I wanted to know. Thank you Ron! I don't understand though. There were 3 glasses per scanner times 4 scanners... that I know of. When you say the three glasses closest to the scanners, do you mean there were more than three glasses per scanner? Is there a CS / 6B difference involved?...

My recollection was that linear had been mentioned. My personal recollection from my 1st Laserium show in '77 at the Gates Planetarium was rotary...from their sheer noise as you mentioned. I too, first used Ledex rotary solenoids, still got them in a box, for rotating fixed diffraction gratings...

I'm absolutely sure we used linear, NOT rotary solenoids for the scan-glass actuators. In the original Mark4 (and maybe the Mark6?) projector we used rotary solenoids to bring up the lumia 50% and 100% mirrors for the effect rows and the individual effects. THAT was a HUGE mistake. Those solenoids...