Mavlink telemetry do not work in INAV

Help / Getting Started
1

Hi,
First,the new website is very beautiful,I like it,hope for more people coming here.

I met a problem when I try OPENHD in INAV.
If I set the telemetry to LTM and the band is 115200,it can work(half),the attitude shows fine but there is no battery info no GPS info no speed no distance info,all information show 0 except attitude.
Then I try to set telemetry to Mavlink and the band is also 115200,nothing works.
so whats my problem?

FC:MATEKF722MINI
AIRPI:3A
GNDPI:3B+
VER:2.0.0 RC7 [Stretch]

Another question,does these hardware can run Buster img or it only support pi4？

2

Telemetry from iNav is always an issue for some reason, I know softserial ports seem to cause problems, and make sure the settings files exactly match on air and ground, including osdconfig.txt which has a setting at the top for ltm/mavlink.

I’ve never been able to get iNav to send telemetry out of the uart that I have soldered my pi wiring to, so it’s difficult to test here at the moment

4

Did you set RC=ibus or something else for iNav?

6

How to setup mavlink telemetry in a Speedybee f405 v3 Im using INAv 7.1
newbie here