A couple of noob questions around crafting such an elegant board: how/where to get the board (oh, I see you answered that, OSH Park); and how to get all the smd stuff soldered to it.

The only thing I've seen about smd says that you have to get your spouse's clearance to bake the stuff in the oven. Is there a provider like OSH Park that will do it? Will OSH Park? If not, can you point out any good info...getting solder onto the board before the baking seems...problematic for us lesser hobbyists.

I don't think that you manually soldered the board in the pictures, so how did you get that done? The baking option?

At any rate, if you do offer these for sale, I'll take 2.

It's great that this just came to my attention, because I've been "building" a harness that has a micro-usb in for power, an LD1117 to step it down, and then has the USB host port for a camera to hook up. I found a 10cm (4") micro-usb female cable (so a phone charging cord would plug into it) and cut the end off and soldered it to the LD1117. The 5v and ground from it are also soldered to another 10cm cable, this one a USB-A female cable that I also chopped the end off of. I'm waiting for 2mm female jumpers to arrive before I can hook up the ground, 3.3V, USB+ and USB-. Your solution is so much cleaner and smaller!

And, looking at your schematic, I see you have TTL between the usb +/- and the onion...I thought I read some things saying that it would hurt do that, but also isn't necessary. I take it, that I'm wrong about that, and need the TTL?