Mini 3.3V+5V USB power supply board
This is a tiny board with a 3.3V regulator, barrel- and mini-USB connectors. It provides a 3.3V output as well as passing through the 5V received from the USB connector (or whatever voltage between 5 and 12V you input on the barrel connector).
The header comes included so you can solder it onto either side of the board - bottom side is great for plugging directly into a breadboard, while topside is great for jumper lead connections.
It uses an AMS1117 3.3V regulator (datasheet here) which can supply a current of up to 1A.
- ID, D+ and D- (USB connection passthrough)