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Happy to leave that market to J Bauer. It would drive me nuts if I *had* to make these.

Several years ago I built an LPM based on an Ophir head, voltmeter, and DC-DC converter (original post). Since that time I've found the need for something new: Powers are getting higher, and my Ophir head maxes out at about 10 watts. Need a new head for dual-diode designs. Really large case...

Photos and design for a AtMega based LPM using an Ophir sensor

LPM Schematic

PCB, back side

PCB, front side

LPM measuring power. Graph at the bottom shows trend

Logging view, showing log as a graph

Awesome data dump, Alaskan, thanks! I bought two 40w FAP 800's from this post...so I hope they're not trashed. We'll find out: https://www.ebay.com/itm/Coherent-FAP-800-813nm-40W-Laser-Diode-Fiber-Array-Package-/174040896502 And +1 on the link to powering them. I haven't sourced a power...

Oh, that's perfect. Prices aren't even that bad for a custom patch. Thank you.

I've wanted to build a high powered DPSS green for a long time and won an eBay auction for a used Spectra Physics ZLM laser head. This head can do about 10W of 1064 and my intent is to convert it to green, or failing that strip it for crystals and optics and build my own. But first, I have to...

Great work. I didn’t know you could get knife edging that tight. It looks like your cylindrical lenses are about 1-2 cm from the collimating lenses. Was that where you got the tightest beam? When I’ve used cylindrical pairs I‘ve had to butt them as close to the collimator as possible to keep the...

Thanks CDBEAM -- very kind! Your three way switch I think would be pretty easy to do with a very small Microcontroller like a ATiny85 (8 pins) and a few other parts. You could then use any simple switch that was momentary on. I think this could be made pretty small -- small enough to fit in...

There is a decent amount of material thickness on the threaded part so you may have some luck re-threading it. If I were to try this I think I'd turn down a rod to exactly match the inside diameter before trying to turn down the barrel to the right diameter for an 11mm thread. That will...

The 8Ah battery is an RC car battery I bought off Amazon. I've updated a post to include a link. Also, thanks for pointing out my lack of electronics description. I spent a lot of time and money on the electronics part and didn't want to get too wrapped up in it. But since there's...

I will remember that!

Schematic of the control electronics.

My first Lipo charger proved too much for me to solder correctly. Tiny pins, all under the chip, made for lots of bridges and a dead chip.

A while ago I built a battery powered lab laser (Battery Powered Labby). It was a fun project but beam quality wasn't that good and I there were some changes I wanted to make to the control electronics. Meet Labby 2: Changes from Labby 1: Extra 2X cylindrical lens mounted back to back with...