PX4 uses Hirose DF13 connectors, as they are small, robust and cost-effective (compared to other widely used similar cable types).
These connectors can be unplugged quite easily as shown in this video:
Readily assembled cables
Pre-made cables for specific purposes are available from:
old 3DR store links:
- DF13 2 Position Connector 7.6 cm (3DR $1.50) – for buzzer
- DF13 2 Position Connector 17.7 cm (3DR $2.00) – for buzzer
- DF13 3 Position Connector 17.7 cm (3DR $2.00) – for IO arming switch
- DF13 5 Position Connector 17.7 cm (3DR $2.60) – for FMU and IO / IOAR UART ports
- DF13 15 Position Connector 17.7 cm (3DR $4.25) – for FMU multi port
- DF13 15 Position Connector 7.6 cm (3DR $4.00) – for FMU multi port
Make your own cables
While the original Hirose crimping tool is prohibitively expensive, there's an economic alternative which works well:
Housings and pre-crimped wire jumpers are available from DigiKey:
The 12“ double-ended jumper wires listed here are the best value; other lengths are available but the cost difference is minimal. One quick tip - cut a 12” double-ended jumper in half to make two 6“ DF13-to-bare-end cables.
The PX4 project recommends the XT-60 connectors for all aircraft and multirotors, as a range of batteries is available with them and 3D Robotics offers all power connections with it. It is slightly better shielded and easier to unplug compared to Dean's Ultra.