HOTT Telemetry

Plane-4.0.0 (and higher), Copter-4.0.4 (and higher) and Rover-4.1.0 (and higher) support Graupner HOTT telemetry.

Wiring and Setup

Connection to the autopilot is via any UART port’s TX input, although one without RTS/CTS flow control is simpler to configure, since flow control is not required.

To enable HOTT telemetry, for example on the first TELEM port SERIAL1:

• SERIAL1_BAUD set to 19 (for 19.2KBaud)

• SERIAL1_PROTOCOL set to 27 (HOTT)

• SERIAL1_OPTIONS set to 4 (Half Duplex)

• BRD_SER1_RTSCTS set to 0 to disable flow control (optional)