Cypher/Telemetry

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General Telemetry Information (Telemetry is Optional)

  • Telemetry can be very useful for the FV-31 Cypher. You can get the most out of your battery by:
    • Monitoring the flight pack voltage and set voltage alerts
      • One way (preferred by most Flex Pilots) is to set a flight pack voltage alarm of approximately 10.2V
        • Program transmitter to alarm WHILE the voltage is below that voltage, and to not alarm if the voltage recovers higher than the threshold.
        • While flying, the alarm may sound briefly at times under high loads. Monitor this, but keep flying.
        • If the alarm is on during steady hover, steady forward flight, or more than 30% of the time, land as soon as possible!
      • An alternate way is to set a lower flight pack voltage alert (9.1V for example) and plan to land the first time it is hit.
        • This way may be less reliable due to high momentary loads.
        • May trigger early with 'weaker' battery packs.
    • Calibrate and monitor you flight pack capacity used and set capacity alerts.
      • Can be a reliable method to know pack condition.
      • Best if you fly all packs of the same or very similar capacity.
      • Set a transmitter alarm when a specified capacity is reached, then land on alarm.
NOTE: The user should always make conservative first flights with a timer. Monitor the 're-charge' capacity of the packs, and the telemetry indications and fine tune their use based on user preferences.
NOTE: FLEXF3/Betaflight is capable of generating certain data and passing it out as serial telemetry data. Some Radio systems can read and utilize some or all of this data. Some cannot. See below.


Telemetry Information by Radio Brand

Spektrum Telemetry

  • These instructions supplement the non-telemetry setup instructions in the Cypher manual.
  • Easy to setup (really just the third pin plug and telemetry slider in configurator) and provides the following Telemetry Data:
    • Provided by Rx:
      • Fades (frames lost by individual sub-Rx)
      • Frames (frames of data lost buy all combined Rx)
      • Holds (Failsafe caused buy more than 40 continuous Frame losses)
      • Some may provide Rx bus (BEC) voltage, SPM4649T appears to not provide it
    • Provided by Betaflight/FLEXF3:
      • Main Battery Pack (Main 3S) Voltage
        Spektrum Telemetry 3-pin Connection
      • Virtual (estimated) Current
      • Virtual (estimated) Capacity used (fuel totalizer)
  • Choose a telemetry capable receiver such as the SPM4649T (Preferred) or AR8010T
  • Bind the receiver to the transmitter
  • Connect to FLEXF3 using the first 3 pins (-,+,signal). (Use 3-male to 3-male pin cable if required for AR8010T style receivers)
  • Use your configuration tool to: (hit the pages 'Save' button before leaving each page)
    Set Telemetry Slider and Save
    • On Configuration page
      • Make sure Receiver Mode is set to a serial based receiver.
      • Make sure Serial Receiver Provider is set to SPEKTRUM SRXL (about the 10th choice down in the list)
      • Now in Other Features, set the TELEMETRY slider to ON.
    • On the Receiver page, make sure your Channel Map is set to TAER1234 (SPEKTRUM/Graupner)
  • You should now have Telemetry, and you can use your transmitters instructions and settings to display and alarm as desired.


Futaba Telemetry

  • These instructions supplement the non-telemetry setup instructions in the Cypher manual.
  • Only Telemetry provided by the Rx is available. Receivers are available that can sample Main Flight Pack Voltage.
  • Betaflight/FLEXF3 Data not available, so no Betaflight settings are made.
  • To connect the Receiver's telemetry to the Cypher's flight pack voltage tap:
    • Choose an S.Bus capable receiver (T-FHSS, FASSTest) that provides Telemetry and has a Voltage port or adapter. (XXX, R7008SB FASSTest)
    • "Y" or "Split" the small cable that provides Voltage Data to the FLEXF3. Install the Futaba compatible Voltage Cable/Plug to the voltage cable. (check polarity carefully!)
    • Plug the added "Y" end of the voltage cable into the receiver
    • Follow the Futaba instructions to configure the Futaba equipment to display/alert with telemetry


Jeti Telemetry

  • These instructions supplement the non-telemetry setup instructions in the Cypher manual and input Wiki.
  • Powerful and utilizes the Betaflight telemetry, but requires custom made cable.
    • Provided by Rx:
      • Radio Signal Strength Data
      • Receiver bus voltage (BEC)
    • Provided by Betaflight/FLEXF3:
      • Main Battery Pack (Main 3S) Voltage
      • Virtual (estimated) Current
      • Virtual (estimated) Capacity used (fuel totalizer)
      • Horizon Angle in Pitch and Roll
        Jeti Telemetry Cable Detail
  • Choose a telemetry capable receiver such as the EX R3
  • Bind the receiver to the transmitter
  • Fabricate the Custom 3-pin to 4-pin male -to- male cable. (You can use the supplied two cables for parts)
    Jeti Telemetry Cable Photo
    • Remove insulation from the middle of the 'signal' wire.
    • 'Y' the wire and install a 2.2k Ohm 1/4 watt resistor as shown in image at right. (You can find on Amazon for example)
    • Insulate with heat shrink tubing.
  • Connect to FLEXF3 using the first 3 pins (-,+,signal) at the Rx's EX Bus Port and 4-pins at the FLEXF3 (-,+,Rx,Tx)
  • Use your configuration tool to: (hit the pages 'Save' button before leaving each page)
    Set Telemetry Slider and Save
    • On Configuration page
      • Make sure Receiver Mode is set to a serial based receiver.
      • Now set the Serial Receiver Provider to JETIEXBUS
      • Now in Other Features, set the TELEMETRY slider to ON.
    • On the Receiver page, make sure your Channel Map is set to TAER1234 (SPEKTRUM)
  • You should now have Telemetry, and you can use your transmitters instructions and settings to display and alarm as desired.


FrSky Telemetry

  • Seeking FrSky users for feedback (to support@flexinnovations.com)
  • Not yet tested.
  • Can see Betaflight instructions at link below


JR DMSS

  • Generally, JR DMSS does not interface with the Betaflight telemetry
  • Refer to your transmitter and receiver instructions for available options.
    • See the Futaba section above for general voltage tap information


Here is an External Link to Betaflights Telemetry information.
NOTE: For reference only. Not all features are supported by the FLEXF3 (see Above)

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