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Telemetry guide

Kari Hautio edited this page Feb 5, 2014 · 22 revisions

This page is incomplete (obviously)

Telemetry modes

Passthru

In this mode data inputted on the serial port on TX is outputted on RX and vice versa. It should be noted that the amount of data passed thru is limited by the radiolink, if the radiolink capacity is exceeded data will be silently dropped. Approximate speed that data can be passed thru can be caluculated from refresh rate as it is possible to pass 8 bytes of data in each telemetry packet from RX to TX, TX->RX rate is half of that since every other packet is used by servo values.

Smartport

This mode is compatible with FrSky Taranis, currently it only supports RSSI and two analog sensors from RX. It should be noted that FrSky uses inverted serial levels and thus a invertter is needed between openLRSng module and Taranis.

FrSky

In this mode openLRSng emulates the behaviour of FrSky two way system (DxR-x). It should be noted that FrSky uses inverted serial levels and thus invertters may be needed to convert the serial signal.

Connections

Simple one transistor inverter, can be used for converttingfrsky&smartport signals between

  • hub/hubless senros to openLRS RX
  • openLRS TX to FLD02
  • openLRS TX & Taranis
  • etc. Telemetry inverter

Modification instructions and adapters

HawkEye deluxeTX Taranis adapter circuit (adapter wire)

dTX to Taranis adapter cable schematic