Add me to the list as interested in a second lantern please.
Please add me to the list. I don’t have much time to be around here these days but I can’t miss this!
Excellent! I hope the firmware is changed to use all 7135’s on the highest mode, rather than leaving off the +1 channel like it does for the FET currently. For just three or four 7135’s (or even five, if another is added to the slave board too) I don’t think any fins are needed at all for the LEDs to stay cool. After all, with 5x 7135 on max, it’s only about 5.3w to 2x XP-L HD. Five watts won’t heat up much, will it? If fins are added, I think it would look better to have them arranged radially on the top heatsink.
The Q8 host already does have the lighted button. DBSAR would just be switching it from the stock green LEDs to amber or orange for better use as a firefly or night-light, rather than just an indicator/locator light. On my Q8, the green is very bright and easy to find, so even if the amber/orange turns out to be less bright, it will still be plenty. 
It’s also the sleep effect of amber/yellow light, (it does help with falling asleep as yellow/amber light help the Circadian rhythm for sleeping, and blue light is the opposite & makes sleep more difficult.
Its likely the production driver for the lantern will have a different trace pattern to use four AMC7135, ( with a 5th & 6th likely left open for those who want to mod it more) and hopefully a new firmware can be developed for the lantern that runs with those, and some added special modes.
Yeah, already done. He just doesn’t have the tools needed to reflash firmware, so proto2 is currently running stock Q8 firmware.
Thats great to hear on the firmware. What modes & groups have you set in the program? Once we can get a finalized driver that uses the 7135s, ( and hopefully either has the USB charging on board, (or wired for that to be a secondary board if needed) My skills are lacking when it comes to program flashing chips in that way, ( or have the tools as you mentioned.
The +1 channel is going to produce the greatest efficiency (hence runtime) for those who can use the amount of light emitted from only 350mA.
It allows the user to set whatever mode group they want. At least, it lets them set the brightness of the lowest and highest level, and how many total steps there should be. The in-between levels will be spaced evenly on a visually-linear scale.
We haven’t really discussed yet what the defaults should be, but that should wait until after the driver is ready and we’ve had a chance to do some testing.
good points 
I am in for one depending on the price.
These are looking awesome. I think some of my family members could appreciate this lantern very much.
If I can add 6 more to my name. That would be great! I’m #37
added.
please add me to the list for one
Thanks for your work on this. It’s going to be amazing and blow the competition from the big-name brands out of the water.
I’m getting excited about this project! Please put me down for two more. Thanks!
Put me in for one. Thanks!
Please put me on the list for possibly 3. Thanks!
in for two
I didn’t see it mentioned, but how about a steel or delrin base plate to protect the bottom from rocks and rough surfaces. Using this outside did you see any wear on the base? Might be able to 3d print a piece the base sits into. Even a wider base with more lateral stability. Like the pancake bases on some lanterns.
Another idea I had was a place at the center of that base with a tripod mount. For a mini three legged flexible tripod, to use on uneven surfaces. The base would need to be a good deal thicker to thread into, as there’s not much material on the q8. Machined delrin would probably be much cheaper than stainless.
I know these would add cost, but as optional additions, I’d be willing to pay for them, for the added benefits.