DIVIMATH HDZero Freestyle - Page 19

19
Help and Troubleshooting
FAQ
1
Facebook Group and
Discord Server?
www.facebook.com/groups/HDZero
https://discord.gg/JPesSHpmCU
2
Does VRX have low
voltage alarm?
VRX does not have low voltage alarm. We recommend using an in-line battery
alarm (not included) between the battery and DC cable
3
How does VRX power
cable work?
DC cable has integrated DC regulator which converts from 3S-6S to fixed 7.8V
output. (Manual says 3S-4S)
It is very important to unplug DC cable from battery after flight. Otherwise,
DC cable will suck up battery power and cause permanent damage to battery.
Trouble Shooting
1
Video feed is working
but no OSD
(a) VTX/VRX Firmware mismatch: Update both VTX and VRX from the
same firmware release.
(b) Wire connection: TX and RX of FC board should be connected with
RX and TX pads of VTX respectively.
(c) Betaflight setting: Instruction on Page 10/11 on Shark Byte User
Manuel 08042021.pdf
- Betaflight 4.2.8 or above
- CLI commands
set osd_displayport_device = MSP
set displayport_msp_serial = n-1//n= serial port number minus 1
save
get displayport_msp_serial //to verify the value previously set
(d) Try another UART port of FC ( avoid to use soft-serial and SA ports)
2
No Blue LED on VTX
From Firmware Rev30092021, Blue LED works as the following way:
(1) Flashing at 1Hz periodically if *no* camera is found after VTX is
powered up
(2) Flashing 8 times if MSP connection is established with FC after VTX
is powered up
(3) Remains OFF for HDZero Micro Camera(Beta), ON for all other
cameras.
If a Non beta HDZero Micro camera is attached, and get NO blue LED,
please
(a) Check if MIPI cable is secured on both end of camera and VTX, and
check if cable itself is fine
(b) Carefully check VTX MIPI connector if there is any bent pin
(c) If it is Foxeer Digisight Camera, make sure it is NOT on analog mode
- Digisight goes to analog when pressing left for 3 sec
- Use stick commands blindly or disconnect mipi and use external
joystick.