Well most of the settings people would want to change can be done themselves with the soldering iron and shorting out the jumper pads.
the default settings will be fine for most users I would imagine. Some who want to run different voltages may need to change the firmware.
If there is a specific firmware change required, Im sure this can be done at extra cost.
Any single cell host that accepts a 17mm driver.
I expect most of us will be putting them in a convoy S2+ or similar host, as they are the most popular.
The tailcap board is also designed for the Convoy S2+
I dont think many people would be doing this, technically the driver can pull 50W, but with the default settings, max output is 5.5A which means just shy of 20W
Is nothing new, common as apples or donuts. Of course, use a cell with enough power delivery/continuous discharge rating, namely if maxing out the driver's output power. A 30Q cell is just shy of this, although an acceptable or 0K choice in responsible hands. In any case, a high discharge cell is a must (Murata VTC5/VTC5A/VTC5D, Samsung 20S/25R/25S, LG HE2/HG2, Sanyo NSX, Molicel P26A/P42A…).
This is going to be super unpopular, but you really need to build in extra costs for things like lost packages, returns, failed boards, shipping, etc etc etc, and don’t forget your time as well. Just my take. Still in for 4 at 17mm.
Yes I agree, Im still trying to work out the final cost, I have to keep the balance of a fair price and not look like im doing it as a means of making profit from an open source design, but at the same time reimburse myself for labour etc.
Big thank you to nzoomed for help make this group order! My gxb172 is running for past year and I am happy with it in my flashlight, always surprise to show friends the brightnest! I do not think I place order since I build some drivers before, but I recommend it for people who want to try gxb172. good luck!
There is nothing wrong in profiting from open source designs. Quite the opposite IMHO, when I open source something I want others to take maximum benefit from it. If it’s financial - that’s great.
Even if profit is not what drives you, bending yourself to balance at the edge of loss it is simply counterproductive. Price it fairly without forgetting about yourself and people should be happy.
Exactly.
Even though the same 100 units would be marginally cheaper for me to do locally (2600 at my shop), I’d still have to charge about 45 to 50 a unit because of the time and labor/testing involved, even if only to have a personal incentive to keep going.