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You need to be more specific. "I have a lot of car parts. Can I build a car?" Is not a question that can be answered.

You said it was larger, but did not specify how much larger. The solutions available to you change drastically as this difference changes. A digital caliper is $12 or less these days and a very useful tool in general. Get one.

WHY do you need a line laser illuminating your porch? What does this accomplish for you?

There are safer methods of pointing something out to another party that doesn't give away your position. Here's an old poor-quality video I took (2011? wow) of a regular 1W 445nm as seen by a FLIR I7. It ghosts a lot. It's essentially like using a violet pointer on glow-in-the-dark material.

Based on 20 seconds of googling, I'm already somewhat confident this is just more lying about a standard 5-7W blue laser diode.

I concur. Sanwu... Well, most manufacturers to be fair, don't seem too concerned with preventing overdischarge of lithium cells. It doesn't happen as often with single cell designed, but 2+cell designs get tricky since the driver doesn't know if the cells are matched. The easiest fix is don't...

Well, I have a litany of bench power supplies and a sanwu pocket. It's the 489nm version, but I ran some tests for you anyway, since the limitations appear to be driver IC related, given the the rather sudden cutoff. The driver stays in regulation anywhere between 1.9V and 5V. I didn't go...

Undervoltage doesn't damage any drivers I've ever heard of. Efficiency may suffer greatly, and the diode may not lase, but I don't see any mechanism where it would be harmful.

Sources I obtained from a former member: Holography forum , his site, and there are also two facebook holography groups.

Your setup is fine. Current-capability mismatch doesn't matter for parallel setup. Having one delivering 90% load and one delivering 10% load is also fine. Noise (in theory) adds with √2 if I recall. So if one supply was 5mV p-p, two supplies should be close to 7 mV p-p That depends on the...

As you may know, the two common colors of masking tape both reflect blue light. Try a color of masking tape that is absorbed by blue light. Failing that, you may have some success with coloring the masking tape yourself... perhaps a sharpie or a light dusting of black spray paint.

Good point: the laser diode driver input and corresponding current control will act as an RC filter in this context. In that case, it may be as simple as finding the response spectrum and setting your PWM frequency a fair bit above whatever that may be. This is still far more complex and...

Yes, 12V supply goes to the 12V input terminals. TTL (short for transistor-transistor logic) is for controlling the output of the driver. Commonly 0V for off and 5V for on, but typically left floating also allows ON. It depends on the driver. You can usually leave these pins unconnected. I think...

Yes, lab power supplies can be paralleled for higher current or series operated for higher voltage, just like batteries can. Some have interfaces that allow master/slave operation so one controls both, but you can just hook them directly together instead. It is not harmful to back-feed voltage...

It's to let you know you are far enough in to not scrape the back of the car when the door closes behind you. Yes, you can just pull all the way in if you like, but I've found it very helpful to be barely inside the door when it closes to maximize space in front of the car for other garage...

Projector lumen ratings are based on light OUTPUT, not input. The conversion efficiency depends heavily on the optical train. Since your model originally had a 230W lamp, I would expect ~13,000 lumens, so you lose 90% in the optics. That may or may not be less with a laser, but interfacing the...

Think of that particular specification as a passive value. The voltage of the diode will be - at most - 2.3V. Just as a 1000Ω 1% resistor will be - at most - 1010Ω. You will not be able to alter this value, nor will you be able to alter the diode's maximum forward voltage. The exception of...

Why do these railroad tracks just end suddenly so far off in the distance? Familiarize yourself with the concepts of horizon and vanishing points, and this is really easy to understand.

That's all relative. It depends on your RC time constant, the number of bits you're trying to emulate, and your threshold for "meeting" the setpoint you've set. But if you're looking for a ballpark figure, 40kpps (thousand points per second) is a common scanner speed. nyquist sample theorem...

Beyond economical repair. That is to say the repair will cost far more time, money, and effort than purchasing a new TV. The one exception might be if you can find an identical TV and swap the diodes.