Bus Pirate prototype “Ultra” v1c will use a 0.5mm flex cable (FFC/FPC) to connect the display board. Of course we could just order the standard parts from Mouser or SZLCSC, but rooting around on Taobao is fun and gives a better idea of the range of stuff out there. Here’s some Chinese vocabulary that helped us order parts.
Cables that are connected 1:1, pin one of one connector is wired to pin 1 of the other connector, are called 反向. Cables that are connected 1:N, pin one of one connector is wired to the highest number pin of the other connector, are called 同向. We ordered the wrong version of the 1.25mm display cable for v1b, but fortunately the crimps can be carefully removed and replaced in reverse order. This won’t be an option with the flex connector.
Most FPC/FFC connectors are available in two types. Metal contacts on the bottom of the connector slot are called 下接. Metal contacts along the top of the connector slot are called 上接.
Orientation is really important because FPC/FFC cables generally only have contacts exposed on one side of each end. FPC/FFC cables are also available in 反向 / 同向 (1:1/1:N), meaning the exposed contacts are on the same side or opposite side of the ends. We’ll post some photos of these cables when they arrive.