I do not own DC-fix. The method I use is frosting the glass with sand paper. But that would not measure the right thing I suppose.
RW, thatās amazing! Nice work! Love it when parts at hand are put to good use. 
Thanks , it was a learning experience . Hopefully the next thing will be a little better , I mean my efforts .
Today I have modified Skilhunt H03. Another with the rest. Previously I changed the diode on XP-L HI, now I changed the driver. The choice fell on Emisar (D1). I like the results very much. I have a ramp and a lot of power.
EagleEye X6
4x Luxeon V
Ledil Angie optic
MTN-17DDm
LED4Power spacer + mcpcb
Parts (with the giant hole I drilled in X6 shelf)
Spacer bolt (hollow for wires)
Spacer top side (bolted down)
Originally had everything wired up for a LD-B4 driver but I had issues and abandoned it. Here I demonstrate the art of wire stretchers to keep your mcpcb off your thermal paste while you solder your connections
Abort, bypass this FET and lets go with what we have that works
Moon. Too bright w/ Luxeon Vās
I used two O rings cause iām not sure the bezel applies enough pressure otherwise. I may try it with one and test heat transfer or try to find thicker glass.
That must have impressive output contactcr! 
Nice mod komeko, did you request the D1 driver from Hank?
Yes, Hank turned out so nice that one of them sold me
This is a very interesting mod Komeko. Can you comment any more on how you did it? Was it an easy driver swap?
Well, the tube is glued, so I used heavy tools. The driver was a bit too big so I polished it a bit. The diode is XP-LHI 3A. MX4 paste. Of course, I set the thermal protection to over 70 degrees Celsius. The turbo withstands 90 seconds which I consider to be a great result, after which it gently goes down. The temperature after 6 minutes is 76 degrees, hot, but it does not bother me. I have the same set of Emisara D4.
Received and modded a new Raspberry Pi 3 B+ today.
Now running libreelec 9 and it couldnāt be any better. Only 31Ā°C while streaming 720p with a copper heatsink and no case.
Love it.
Purchased and fulfilled via Amazon because I had to empty my Entropay cards (they are shutting down, if you have money on Entropay either withdraw it to your bank account or spend it!). Delivered in less than 24 hours without Prime. wow!
I can not believe how much computing power you can get these days for a budget of 35 $US.
Sweetā¦ Got a couple not to long ago, with projects lined up for themā¦
One really cool project for BLF folks would be 18650/battery discharging automation with a RPI including plotting.
Or a more complex Luxmeter or other light measurement.
What projects are you planning @LouieAtienza ?
I run PiHole on another rpie 3 that also does Flightaware (Piaware).
One project I have is for a touchscreen-controlled lightbar system; I have a 4-channel relay board and some MeanWell boost drivers that can do 0-10V dimming. So it would be cool for the user to save configurable presets for the center throw lights and outer floods, and even have each preset āmorphā into an other. My other project was a small portable CNC engraver that I can take on-site for doing on-time award engravingā¦ but not sure if Iām going to get to that one. Being I have a small benchtop router, mini-mill, and 3D printer Iām not sure I need another āmill,ā though I have a small mini-lathe that might end up getting the CNC treatment.
I got a 0W just waiting for meā¦ company finally changed from their windoze-only vpn to one thatās also available for linux, and with the 0W I can just stickytape it to the back of a monitor, power it from the monitorās usb socket, and with a bluetoof keyboard have the entire setup, well, like that.
HDMI to the monitor, bluetoof to the keyboard/trackpad, usb for power, built-in wifi to get to the outside world. What else does it need?
Best part, I got the 0W for either 5bux or 10bux at Microstore. Forgot which. Mightta been the 0 for 5bux, 0W for 10bux. Either way, itās a steal.
I envy yāallās knowledge that allows you to āplayā with these things. I was seeing the Pi Rasberry as a gift for ordering other things and had no clue what to do with itā¦ oddly enough I got out of high school and started college in computer programming back in the day. lol (Cobol, keypunch, like thatā¦ 1980)
I started with the very first Raspberry Pi when it came out, didnāt know what it was but was taken aback it was designed and manufactured in the UK. Back then I lived in London and I didnāt believe something that cheap could have any value when assembled in a high-cost country.
How wrong I was! That first Pi blew me away, it was my third entry into the linux world (only used Linux on x386 and newer as a child) and what a great one it was. Even though the whole concept was initially to educate younger children, it was immediately sold out and used by everyone.
Now I run entire home networks and automation with my collection of Raspberry Pis.
I havenāt kicked off any flashlight/light projects yet, but Iāll think about a few things now.
edit
On my to-do list would be
Raspberry Pi running some form of lux meter, other light measurement
Automation for lithium battery charge/discharging (including plotting/graph online)
OBDII Pi for automotive applications
I appreciate you taking the time to respond. I have never had my H03 apart. Dont really know whatās going on inside of it yet. But this may be a mod Iād like to copy. Thanks again for sharing.
Raspberry Pis are absolute golden.
I currently have PiHole set up to block ads on certain websites on my phone mostly.
MicroCenter has it for $5, but you can only buy one per day. If you buy 2 itās $14.99 each. The salesman told me it was to avoid people buying it in bulk and reselling.
Only thing I see with Bluetooth is probably anyone could ādiscoverā your 0W and control it with their deviceā¦ Depends on how nefarious the neighbors are.
edit: Looking again the 0W has 2 microUSB ports so you should be able to just get a USB to microUSB dongle and run a wireless USB keyboard/mouse.
RPi (even Zero or ZeroW) would be pretty good for something like that. A year or so ago I built a lumen tube using a Wemos D1 Mini (ESP8266) running Arduino and a TSL2591 breakout board. Super small, USB powered, and feeds out results over WiFi via a built-in webserver. It makes runtime/output charts really easy.