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Looking for a 50-60mm heatsink "sleeve" for a 25mm module. Aluminum, so not too heavy. Finned or not finned. Gutted this old Ryobi flashlight and a dead battery pack. Looked at building into it a 7.4v LiPo battery pack, but going to go cheap at first and try a 6AA holder with NiMH cells (8.4v...

If someone's done this, please let me know. Rather than a bunch of hosts, I'm intending to build a single large host that will serve as a test platform. The idea is to put a single large disc (e.g. 4-5" diam., 1-2" deep) of aluminum up front, and sink into that several cavities for 12mm...

Look what I found in my goodies bin. Made in West Germany - so that tells you the age. I think I picked these up in the early 90s. I recall they worked but I’ve misplaced the instructions on the power supply. If you’ve seen one of these let me know the color codes. I believe it is black -, red...

The gearshift handle that is my avatar is being made into a host. There's a hidden compartment which will perfectly hold 2/3 of a D cell. There exists a 1/2 D cell - awesome! But only in NiMH, so I have found. 1/2D Size Rechargeable Battery 2400mAh NiCd High Top | eBay A few thoughts on...

I am looking for a simple, small battery level monitor for custom hosts. Similar to this: 3.5-7V RX Battery Voltage Level LED Indicator | eBay This one is for 6v racing packs, I think. $5 is a good target for something like this. I may get this one, but it's a tad large and for a single...

I just saw this on-sale: 0-30V, 0-3A Mini Bench Supply-MPJA, Inc. 0-30v and 3A. I bought the $60 vertical version: 0-30V, 0-3A Variable Benchtop Power Supply-MPJA, Inc. I used it for the first time last night. Great little unit! Love being able to directly drive and test diodes this way...

Hi folks. Without access to a metal lathe, I've been looking for some inexpensive ways to provide a heatsink for an Aixiz module. Spent quite some time at Lowe's yesterday and have much to report, but for now I wanted to share this interesting $3 piece I found in the plumbing section: Shop...

Picked up a couple of 32650 LiPo cells that are supposed to be protected 32600 (D-cell size). Well, these are a full 70mm, 10mm more than a D-cell. So, use in hosts requires a mod. Fine, but how to charge them without buying a special charger? Project cost: about $3.50. Bought a 2 D-cell...

Hi. Happened upon this piece of hardware @ Lowe's this evening. It's a brass tube, just shy of 5mm and nicely surrounds the pins on a standard TO18 laser diode. It allows you to put even pressure on the diode while protecting the pins. Best yet, you get enough tube to cut it down into...

Just a suggestion to the overseas marketers of LiPo batteries: having the word "fire" anywhere in the name of a LiPo product is NOT a good idea. :-)

Hi folks. I was on a site looking at power supplies and noticed these huge MagLite-like hosts that are relatively cheap. There's a 6-D version! At almost 20" long, not terribly practical, but it will run forever and a massive heatsink in that head could accommodate several modules. Might be...

Looking for a decent, yet inexpensive power supply with current and voltage settings independent. This one looks decent (0-30VDC and 0-3A)... Brand New Mini Bench DC Power Supply 0-30V, 0-3A! Great Supply! | eBay Price is right: $85 with shipping from US. Any better deals out there? The...

Hi all. I've posted a few times, so I thought it time to play by the rules and introduce myself. I am fairly experienced, have been around lasers for many years. First was a HeNe (dim!) tube I picked up at an Amateur Radio swap fest, probably in 1985. It was, I think, removed from a store...

Has anyone put together a reasonably comprehensive list of popular diodes and their specs? E.g. - manufacturer, part #, nm, mW, voltage (range), current (range), maxes for ea, etc. Thanks!

I have an approx 150mw green module which has a blown diode and / or driver board. Wanting to do 1 of 2 things: 1. Replace 808nm diode and driver with new ones at same level of output. Cheap. 2. Replace both with a higher output combo. Still cheap. I have heard that the crystal will...

I've heard many of these cheap LED drivers can be used for constant-current applications with laser diodes. I'm trying to grok the way one like this works: 1.5V~4.2V 3W Cree Circuit Board for Flashlights (16.7mm*5.6mm) - Free Shipping - DealExtreme - 1*Cree 3W regulated power output - Output...