MSP is not included by default in the current build because of flash limits, you need to build 4.1x yourself and define in
libraries/AP_HAL_Chibios/hwdef/KakuteF7/hwdef.dat
define HAL_MSP_ENABLED 1
before
# save FLASH, but leave above when flash issue is fixed
define HAL_MINIMIZE_FEATURES 1Hello Alex and thank you for your quick reply
Unfortunately, I currently don’t have the knowledge to build my own version.
Is there an another version available I can use to enable my matek 3901 optical flow
?
if it’s copter use this one https://drive.google.com/file/d/1_7U5F4ZjyaZ0yqHhvoZiF_wuXH1ChtZa/view?usp=sharing
Thank you Alex.
Unfortunately, still no values on the readouts.
Can I try something else?
Can I modify my apj file with APJ TOOLS?
I want to go with third tester , recently I was connected to uart 4 and complete all parameters but still my op flow couldn’t recognize
Isn’t working for me what I’m missing can you tell me ?[quote=“yaapu, post:500, topic:57944”]
me know if anybody needs a test build
[/quote]
I’m here to test what ever you need [quote=“yaapu, post:564, topic:57944”]
here you go ArduCopter 4.1dev KakuteF7 custom build with MSP support
[/quote]
After reading 565 messages then guessing , i need to formats on this fw on kakute f7v1.3 , right @yaapu
Hi, I did extensive testing when I fixed the MSP opflow driver back in january and it worked just fine https://github.com/ArduPilot/ardupilot/pull/16226
I’ve just tested the following Firmware and opt flow does not give me any info…
Sorry.
Additionnal to that, mission planner gives me 8 motors instead of 4 from A to H.
Really sorry for those noob questions
HI,
So i got a F405-Wing today and flashed the beta 4.1.0…
But if i search for serial (in my case 5) … i can not find the msp option, it also just shows 1 to 30 … but wiki says msp should be 33…
What should i do to get it running?
mhmm…perhaps update MissionPlaneer/QGC or use mavproxy
So i checked that… deinstalled all Missionplanner and reinstalled…
Version (latest): 1.3.74 - no updates available
Flashed (latest): https://firmware.ardupilot.org/Plane/latest/MatekF405-Wing/
Settings:
Serial2 > Only 1 to 31 is available:
I Also checked with TX / RX from Air Unit on RX/TX2 (also reverserd plug in checked) …
No OSD Data 
OSD_Type i tryed 3 but also only 0-1 is available 
Is there any reason why i don´t get the Information in my Air Unite / Mission planner,… i mean i have all the newest software and put in the correct numbers i gues
@Deadfox
Im using also f405 wing. For me the osd is working with 4.1.0 dev Arduplane (NOT copter) fw. On serial 5 (uart 5) serial5_protocol 33…osd type 3, msp=0
Dont care if you cannot see the given parameter number in missiom planner…i also cannot see protocol 33…just type in and save it. For me it works.
Have you enabled custom OSD to ON in dji goggles?
Hi, I want to use Arduplane and DJI V1 goggles with MSP OSD on a Matek H743 flight controller. I have flashed the H743 “Latest” Dev version (4.1.0 with bl) and now have MSP_OPTIONS=0 and MSP_OSD_CELLS=0 in the parameter list.
By setting OSD_TYPE to 3 and refreshing parameters I was expecting the many MSP_OSD_xxx parameters to become visible. this didn’t happen. There are currently no connections to the board, ie no battery and no serial connections on any UART. I have tried setting different serial ports (UARTS) to SERIAL_x_PROTOCOL=33 and MSP_OPTIONS=0
Should this work? Have I missed something? or isn’t the Dev version of H743 set up for DJI OSD? I have been using, and enjoying, DJI goggles and OSD on an F765 board with MSP_v0.7 for six months thanks to Alex and the Devs.
There are comments earlier here where iamKSK is using MSP on a H743 4.1.0 for optical flow.
Any help much appreciated, Bill
Hi Bill, since merging to ardupilot dev version MSP osd parameters have been unified with the OSD ones, you have to use OSD1_*
Hi Alex
Am I correct for assuming that to override other items, I need to create my own custom build of copter? Or am I missing something?
Thanks!
not sure I understand your question
I can see that my question was rather short, sorry about that.
I meant to ask if it is possible to show custom information (the reading from a rangefinder) on the OSD by mapping that value to one of the other items (for example vertical speed)? Can this be done by setting parameters in eg. Mission Planner, or would I need to create a fork of ardupilot and change in code what is being sent to the OSD?
Thank you 
ok now it’s clear, you would need to fork and override
