FV-31 Cypher Wiki

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Welcome to the Flex Innovations - FV-31 Cypher Wiki

FV-31 Cypher

Aircraft Info

• Build Tips

Manuals and Documents

• Instruction Manual (English)

Product Information

• FV-31 Cypher PNP Product Page

BetaFlight Configuration Tool Links

Various FV-31 Cypher FLEXF3 settings can be edited using a BetaFlight Configuration Tool. We use the following ones. Only one configurator install is needed. Multiple links to multiple platforms and versions are provided below.

• BetaFlight Configurator For Windows PC (Typically a Windows 7, 8, or 10 PC will use the Asset with name "betaflight-configurator-installer_<version>_win32.exe"). Works via Micro USB cable. Versions for Mac OS X and Linux may also be available. Flex does not test or support these versions.
  • Latest Betaflight Configurator Releases
  • V10.51 Betaflight Configurator (known working)
  • Also available through the Chrome Web Store (Flex Innovations does not test or support)

• Speedy Bee for Android. Works via Bluetooth or Micro USB cable (Micro USB requires OTG adapter for most devices)
  • Search for Speedy Bee at the Google Play store

• Speedy Bee for iOS (Apple Iphone and Ipad). Works via Bluetooth.
  • Search for Speedy Bee at the App Store

Available Electronic Settings Experimenters

There are some Cypher specific settings available for experimentation and use.

These are only set using the Command Line Interface (CLI) using a configuration tool for Betaflight. Typically a "ENTER" is required after typing the command.

• The "DUMP" command will show ALL settings.
• The "get cyp" command will display all Cypher specific settings which include:
  • cypyawpgain, cyprollpgain, cyppitchpgain, cypnwpgain, cyplelstrim, cyprelstrim, cypnwstrim, cyptofwf, cypfrfwf
• Setting notes: Allowed variable range can be seen in the using "get cyp". Default values are in ().
  • These are the Proportional gain settings for the elevons, yaw differential throttle in forward flight, and nosewheel. Higher numbers are more gain, lower numbers are less
    • cypyawpgain (20) - Yaw/Rudder for differential thrust in forward flight
    • cypnwpgain (20) - Nose Wheel steering
    • cyprollpgain (17) - Roll/Aileron for elevons
    • cyppitchpgain (17) - Pitch/Elevator for elevons
  • These are the "subtrim" settings for the elevons and nosewheel servos.
    • cyprelstrim (0) - right elevon - positive number raises elevon
    • cyplelstrim (0) - left elevon - positive number raises elevon
    • cypnwstrim (0) - nose wheel
  • These are settings that allow some adjustment of the attitude during the transition. Make any changes '1 Unit at a time.
    • cyptofwf (0) - Transition from hover/45 degrees to forward flight - positive number raises nose - negative number lowers nose
    • cypfrfwf (0) - Transition from forward flight to 45 degree/hover - positive number raises nose - negative number lowers nose
• To change a setting follow this example that raises the right elevon about 10 subtrim units from center
  • set cyprelstrim = 10 -> ENTER - sets the value - will be echoed by the CLI.
  • save -> ENTER - saves the value to the FLEXF3 PCB - elevon will shift up slightly

NOTE: save is typed, this is not the 'Save to File' button! Multiple settings can be changed before saving. This will force a reboot. a Disconnect/Reconnect is sometimes required after saving.