Hi need some technical assistance for rush blade f722 HD
i am unable to get the GPS and compass working I have double-checked all the connections and params in beta flight but it's not showing up pls help. Applied the custom defaults also.

I have the Rush Blade F722 Analog and have no issues with a GPS and Barometer.

Which UART did you connect the GPS to and have you connected the SDA/SCL wires from the compass to the SDA/SCL pads on the FC?

GPS RX —> FC TX
GPS TX —> FC RC
Compass SCL —> FC SCL
Compass SDA —> FC SDA

What brand GPS and Compass are you using?

Paste your CLI DUMP here for us to analyze.

(26-Jun-2022, 10:22 AM)kafie1980 Wrote: I have the Rush Blade F722 Analog and have no issues with a GPS and Barometer.

Which UART did you connect the GPS to and have you connected the SDA/SCL wires from the compass to the SDA/SCL pads on the FC?

GPS RX —> FC TX
GPS TX —> FC RC
Compass SCL —> FC SCL
Compass SDA —> FC SDA

What brand GPS and Compass are you using?

Paste your CLI DUMP here for us to analyze.

Hello i was able to get working the problem seems to be in the GPS unit(I  have changed it a other one) but the compass is still not working. The GPS I am using is HGLRC M80 Pro GPS Module. It has been mentioned in the GPS manual Compass:  QMC5883 is not supported with betaflight can you pls verify it whether it is supported now? 

beside this I have holybro Micro M8N GPS

QMC5883 is supported in Betaflight.

Double check your Compass connections as shown here:



You never provided me your CLI dump so I am going to run off a hunch here since I do not have the Rush Blade F722 Digital version but try this:

Quote:set mag_bustype = I2C
set mag_i2c_device = 1
set mag_i2c_address = 0
set mag_hardware = AUTO
save

Else try:

Quote:set mag_bustype = I2C
set mag_i2c_device = 1
set mag_i2c_address = 13
set mag_hardware = AUTO
save

Let me know if this works.

(27-Jun-2022, 01:16 AM)kafie1980 Wrote: QMC5883 is supported in Betaflight.

Double check your Compass connections as shown here:



You never provided me your CLI dump so I am going to run off a hunch here since I do not have the Rush Blade F722 Digital version but try this:


Else try:


Let me know if this works.

Hello the HGLRC GPS is not working the unit is damaged i think i have switched to holybro Mirco m8n for now but i am having a different issue now i am setting up the osd but i am getting the wrong voltage reading can u please tell do i have to choose onboard ACD or esc telemetry? Below is how i have connected the esc to the FC.

Your wiring looks correct.

You need to set both Voltage and Current sensor in Betaflight to "Onboard ADC".

What voltages are you seeing on your OSD? What's wrong about them?

(07-Jul-2022, 12:35 AM)kafie1980 Wrote: Your wiring looks correct.

You need to set both Voltage and Current sensor in Betaflight to "Onboard ADC".

What voltages are you seeing on your OSD? What's wrong about them?

When selected Onboard ADC, the voltage fluctuates a lot, dropping from 16.8 to 15.9 instantly and not getting stable. i will make a video and post it.

I do not think that is a configuration issue. If it reads voltage then it reads voltage.

Its more of a component or connection issue.

Is the XT60 cable night and tight in terms of the soldering?

Is the ESC to FC connector in good condition? Any bent pins?

(07-Jul-2022, 05:36 AM)kafie1980 Wrote: I do not think that is a configuration issue. If it reads voltage then it reads voltage.

Its more of a component or connection issue.

Is the XT60 cable night and tight in terms of the soldering?

Is the ESC to FC connector in good condition? Any bent pins?

OK,  so i think i have found the issue when I unplug the DJI air unit from the flight controller the voltage becomes stable and stop fluctuating. I think maybe I need to connect both the battery and gnd pads provided in the flight controller?

The voltage regulator on the FC might be struggling to power up everything you have connected to it.

Try powering the DJI airunit directly from the LIPO via an external BEC and a capacitor to see if that helps.

(08-Jul-2022, 02:21 AM)kafie1980 Wrote: The voltage regulator on the FC might be struggling to power up everything you have connected to it.

Try powering the DJI airunit directly from the LIPO via an external BEC and a capacitor to see if that helps.

directly powered the air unit and now the voltage seems stable.