Use board as HoTT telemetry sensor

Introduction

HoTT telemetry was introduced by Graupner into his RC radio and allow connecting various sensors to the receiver.

A Revolution, Revonano or Sparky board can emulate this modules and send telemetry data to the radio.

The following modules can be enabled:

  • Vario
  • GPS
  • EAM (Electric Air Module)
  • GAM (General Air Module)
  • ESC

Wiring

HoTT receiver can be connected to the Mainport or FlexiPort and FlexiIO (receiver port) on Revolution board.

With a reduced size a Mini Revolution board can be used as well, taking in account the receiver port has 8 pins instead of 10 pins in original Revolution board.

In this page


Hardware setup

Revolution board can provide HoTT telemetry on FlexiIO port (receiver port), for other boards you need to use the MainPort or FlexiPort and configure the port with HoTT Telemetry.

Two options are available for telemetry output on FlexiIO (receiver) port: HoTT Telemetry or PPM +Hott Telemetry

All changes in Configuration > Hardware page need a reboot


HoTT configuration

UAVOBrowser

All configuration settings can be found using the UAVOBrowser in System tab.

  • Sensors: Enable or Disable the sensor to be emulated
  • Limit: Set the limit values used as alarm
  • Warning: Enable or Disable alarm


Save settings using the save icon


Warning alarms

Modules emulated

Limit values



Sensors

According to the sensor emulated here is the Limit/Warning to be configured, if needed:

Limit/WarningVarioGPSEAMGAMESC
AltitudeBeepXX
X
Altitude announces: 20m, 40m, 60m, 80m...
MinSpeed
X


Need a GPS
MaxSpeed
X


Need a GPS
NegDifference1XX
X
Sudden descent
PosDifference1XX
X
Sudden rise
NegDifference2XX
X
Fast descent
PosDifference2XX
X
Fast rise
MinHeightXX
X
Low altitude limit
MaxHeightXX
X
High altitude limit
MaxDistance
X


Need a GPS
MinPowerVoltage

XXXVoltage data need at least a basic voltage divider
MaxPowerVoltage

XXX
MinSensor1Voltage

XX

MaxSensor1Voltage

XX

MinSensor2Voltage

XX

MaxSensor2Voltage

XX

MinCellVoltage

XX
Individual cell voltage is calculated, not measured.
MaxCurrent

XXXCurrent need a Current sensor
MaxUsedCapacity

XXXUsedCapacity need a Current sensor
MinSensor1Temp


XXSensor1 = Gyro temperature
MaxSensor1Temp


XX
MinSensor2Temp


X
Sensor2 = Baro temperature
MaxSensor2Temp


X

MaxServoTemp





MinRPM

XXXNo RPM sensor connected to the board
MaxRPM

XXXNo RPM sensor connected to the board
MinFuel


X
No fuel jauge sensor connected to the board
MaxServoDifference