Jufran88
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- Feb 9, 2011
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Sipik HK21 445nm @1.56A
host/heat sink by qumefox
This host has been sitting at my desk for a few months until just recently I had some time to do a build :yh: I orginally intended to use this host for the BDR-S06J diode, but since I had an extra 445 (thanks rhd) I thought might as well!
When I first started building this I ran into a couple of problems, the driver space was a tad bit small to fit my custom made driver. So I contacted Chris (qumefox) to see if he could design me a larger heat sink which turned out quite beautifully. The other problem I ran into was the switch, it seems it can't handle getting soldered to a wire without damage so Chris also fixed that for me.
The machining is excellent and the focus adapter and tripod was a nice touch to its overall appearance. I accidentally dropped the heatsink onto the tile floor and left a couple of dents
Build Pics:
Custom driver I made
Diode connected to driver connected to switch (case pin used as the battery negative)
I wrapped the bottom of the driver with some polyimide tape to prevent it from touching the sides of the heatsink that could cause a short
longer heatsink. You can see the dent where I dropped it
I used my dremel to widen the inside a bit and sanded the edges of my driver to get it to fit all inside
Testing. Running at 1.556A off 2 3.6V CR123 batteries. Since it's a linear driver the current at the tail or mid piece is the same as current going into the laser diode.
Diode connected to driver connected to switch (case pin used as the battery negative)
I wrapped the bottom of the driver with some polyimide tape to prevent it from touching the sides of the heatsink that could cause a short
longer heatsink. You can see the dent where I dropped it
I used my dremel to widen the inside a bit and sanded the edges of my driver to get it to fit all inside
Testing. Running at 1.556A off 2 3.6V CR123 batteries. Since it's a linear driver the current at the tail or mid piece is the same as current going into the laser diode.
Beamshots:
I used an Aixiz 3 element AR coated glass lens
(left) Solarforce L2 445nm Flexdrive V5 @ 1.5A vs. (right) Sipik HK21 445nm custom driver @ 1.56A
No planes/helicopters in the sky, just the stars :yh:
Always wear your safety goggles!
:thanks:
