I like tinkering, I like open source, more or less an amateur hobbyist (did this to get the kids into electronics and stuff)
Figured I would post up a few projects I have found and completed and got working
Full repository of found "open source" projects I have shared
https://oshpark.com/profiles/WarHawk-AVGFirst is a 12vdc desulfator (alot of debate if these work or not (my experience they work), I just wanted to build one)
https://oshpark.com/shared_projects/ATrDSRDVAnd a smallish joule thief led (this particular one ran for almost 2 weeks straight on a fresh AA battery)
https://oshpark.com/shared_projects/Pv0rRfN6I have also recently got into these high power Cree flashlights..and have built some drivers for them
This is a 12A 32*7135 linear regulator board that is controlled by an Amtel ATtiny13A MCU, not fully tested (I got it working but needs some dimensional adjustments [aka stock driver 2mm thick, OSHPark board 1.6mm so a few solder blobs on the outer ground ring should make it fit)
Coincidentally I reflowed this in a stainless steel skillet on my kitchen stove
Another is a rework of a Chinese Nanjg style driver, normally they are 17mm but a few lights have 20mm drivers...so a guy redesigned it on a 20mm board
I stripped the Chinese one with a new hot air rework station and then put all the components on the OSHPark board...works surprisingly well
Only complaint I have is that alot of the shared projects there...people don't provide linkbacks to their project webpages or BOM's or schematics or anything, OSHPark did allow for editing the shares so it can be added but unfortunately many haven't gone back and updated it...thus really difficult to build stuff if you can't find out what the stuff is
Either way...post up pics and whatnot of what you have done or shared...