Ok, so not exactly Laser related but I thought it was a cool project to work on and I thought I'd share.
The boards on the left of the image are the LED constant current driver boards for some 130 lumens Cree LEDs. The boards on the right are LIPO battery charge boards that will plug into USB and charge a lipo battery at 100mA/h The board has a micro usb connector on one side and the charge circuitry n the other.
Incidentally, the constant current circuit for this LED driver is the basis for the current regulator in the Laser TTL driver design I'm working on.
The fun part is going to be soldering these components onto the boards lol. I'm using solder paste and a toaster oven to melt the solder paste. The toaster oven is used only for my projects
