Hello,
After a long time of reading and learning through the forum, purchasing and modding some 18650 Tube lights like multiple convoy s2+ and BLF A6, i got in the need for a few nice camping lanterns.
At first i have to say, im really impressed how much knowledge is in this forum, and how much work alot of people invest, especially in the BLF project lights and custom firmwares.
After alot of reading about the BLF LT1 (and ordering one, can't await the arrival)
i came across DBSAR's very interesting V1 prototype, and alot of interesting informations in the design process.
so i got me a cheap SRK 12t6 clone host on ebay, and began to plan my build.
First, the host had a little meeting with my lathe:
i pressed in a solid 6mm thick aluminum Shelf, added wire holes and a central m5 threaded hole, and fabricated a nice massive lamp head from aluminum stock.
Test fit: (the rubber hose around the screw gets replaced by a 7.5mm dia. aluminum tube with a white 3d printed sleeve , which hold the wires later)
I had a few very cheap XP-E HEW 2900k emitters on 16mm aluminum stars from FT, left over from a interior light project on my van.
i liked the tint and the cri looked not bad, but they produced wild tint shift when used without a big diffuser.
so i installed three of them in my lamp head with a bit of fujik, wired in parallel
The diffuser/shade was made by 3d printing, white translucent pla with 0.5mm wall thickness, which gave a good result for light output and illumination pattern.
The Stock 2Mode+Strobe FET driver pcb was gutted, i fitted 5 7135's on it,which gave me 1.75amp max. (around 580mA per emitter)
and epoxied a soic-to-dip8 pcb with attiny13a and voltage divider for battery monitoring on it,
flashed with a modified version of DTH_momentary FW from toykeepers firmware repo (edited for 7 modes + moon, and high without timer stepdown)
Mode spacing is now: moon-1.5-3-6-15-30-50-100%
i forgot to take pictures of the driver and the inner Head Standoff assembly :(
i painted the head with a thin layer of Heat resisting paint to match the black host,
first i had concerns about lowering the heat radiation, but measurements resulted i no loss of cooling
running on 100% at 20°C ambient, the lamp head doesnt get above 50°C.
Clearly, its nothing like the LT1, but so far im pretty happy with the outcome, as its my first mod that required that much of change to a lamp.
it puts out good amount of light and has a nice uniform beam pattern with almost no glare and no artifacts.
i've also printed a shade for it, and think about adding a hanger to the top.
After building it, im even more eagerly waiting for my LT1 to arrive .
Edit: added the images