This is a little project I made recently, I call it USB A to micro USB bridge and it does what the name says: it’s just a bridge between the USB A female connector and the female micro USB. In the middle there is a DIL pin header that allows you to connect or disconnected individually the USB signals. I needed this because recently I started working on a USB project and I wanted to have an easy way to hook up a multimeter for measuring things like voltages or current passing through.
I have PCB’s from both Seeed and ITead for this little project because I wanted to compare their service and so I ordered from both of them. You can download Eagle sch and brd files in ZIP format from here.