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Calibration
A calculator for approximate calibration values is available here
NOTE: if use Flight Controller voltage, then ALL adjustments are made on the FC. The following does not apply.
Main or video voltage connected directly to OSD
- If > 4s enable "5v analog ref"
- If using analog RSSI direct to OSD, enable "5v analog ref"
- If using current sensor direct to OSD, enable "5v analog ref"
- If "Enable ADC 5v ref" is changed, save settings
- With a voltage meter, change "Voltage adjust" and save until the voltage on the OSD matches the meter
- Repeat for video if appropriate
Save settings Click "WRITE" to save settings to OSD
NOTE: if use a hardware sensor connected to the Flight Controller, then ALL adjustments are made on the FC. The following does not apply.
Hardware current sensor - from a datasheet
- To be added
Hardware current sensor - with a current meter
- Select "5v analog ref"
- If "5v analog ref" is changed, save settings
- Starting at zero, increase "Zero adjust" to display correct Amps at motors off
- Starting at max, decrease "Amps adjust" to display correct Amps at mid - high throttle setting
- Repeat previous 2 steps for improved accuracy
Software current sensor - with a current meter
- Starting at zero, increase "Zero adjust" to display correct Amps at motors off
- Starting at max, decrease "Amps adjust" to display correct Amps at approx hover
Software current sensor alternative method - with a battery charger
- Change "Zero adjust" to display correct Amps at motors off - suggest 0.3 to start
- Change "Amps adjust" to display "approx" correct Amps at mid throttle ( try bat capacity*8 where capacity is in Ah )
- Fly a complete battery and note the total mah used on the OSD and put back into the battery by your charger
- The correct amp adjust = old amp adjust
*
charger mah used / OSD mah used
Use flight controller method - Current sensor connected directly to flight controller
- Select Use Flight Controller Amperage
- Save settings - Click "WRITE" to save settings to OSD
- Calibrate current sensor according to flight controller firmware documentation. (ie. Betaflight/iNav) NOTE: If using a hardware sensor connected to the Flight Controller, then ALL adjustments beyond the defaults shown above are made on the FC.
Save settings Click "WRITE" to save settings to OSD
- If using analogue RSSI on the OSD select "5v analog ref"
- If "Enable ADC 5v ref" is changed, save and restart the OSD
Via OSD menu
- With TX approx 2-3 m from the RX, select calibrate RSSI from OSD menu
- When timer reaches 10, turn the tx off and wait until the timer finishes counting down before turning back on
- Save settings
- Minor adjustments can be made on the GUI if necessary
Via GUI
- With TX off, adjust RSSI Min to match value read from OSD and save
- With TX on, adjust RSSI Min to match value read from OSD and save
- Remember to "WRITE" to save to OSD
Save settings Click "WRITE" to save settings to OSD
Some flight controllers (FC) (iNav/Betaflight/Cleanflight/Baseflight/MultiWii are confirmed) support mag calibration from the build-in OSD menu.Your FC Wiki will provide further information. Other FC's running MSP protocol such as librepilot may not support Mag calibration from the OSD menu.
- Select MAG calibration from within the built-in OSD menu
- Move rotate the FC in all directions as per instructions from your particular FC wiki / support pages
- The timer length on the OSD is based upon the original calibration time for MultiWii FC.
- Other FC may finish the calibration process within a different timescale.
- On some FC, the led indicates the status of FC calibration.
- The OSD just sends the calibration initiation command - there is no save required from OSD at the end - the FC completes that step.