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Calibration
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 select "Enable, ADC 5v ref"
- If using analog RSSI direct to OSD, "Enable ADC 5v ref"
- If using current sensor direct to OSD, "Enable ADC 5v ref"
- If "Enable ADC 5v ref" is changed, save and restart the OSD
- 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 teh Flight Controller, then ALL adjustments are made on the FC. The following does not apply.
Hardware current sensor - from a datasheet
- Select "Enable ADC 5v ref"
- If "Enable ADC 5v ref" is changed, save and restart the OSD
- Click Amperage "CAL" on the GUI
- Enter the OSD onboard 5v voltage measured with a volt meter (recommended for improved accuracy)
- Enter the offset voltage. (Voltage when 0A drawn)
- Enter the sensitvity - mV change per 1A change
Hardware current sensor - with a current meter
- Select "Enable ADC 5v ref"
- If "Enable ADC 5v ref" is changed, save and restart the OSD
- Either use calibration data from spreadsheet linked above (probably easier) or:
- 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
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 - typically 0.3
- 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. Cleanflight / Betaflight) 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 "Enable ADC 5v 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