Good day guys !!
I feel the need to obtain the information from my PixHawk in my Graupner MZ-24 screen. I found
some threads talking about a change in arducopter firmware to run the telemetry, not good at messing original controller firmware.
Then I found an "adapter" that staff of the AutoQuad made to convert the MavLink in Hott telemetry.
I come here to share a few changes I made in the project Mav2Rott downloaded here: http://autoquad.org/software-downloads/?did=31.
This is an adaptation to send the telemetry PixHawk for Graupner Hott Protocol.
Is correct with some features:
Battery Voltage;
Altitude for barometer;
Satellite count Speed;
Flight Modes Current drawn by the motor;
Direction of the Head;
I am not able to make it work:
Correct display Latitude and Longitude;
Distance of Home;
Direction of Home;
If anyone can help thank you very much.
The project is attached to the topic. The connections are equal to the jd-ioboard. I am using an Arduino Pro Mini.
Mav2HoTT_NoLeds.zip
Replies
gr24
Michel Kosloff said:
Your idea is a good approach, maybe a little extended:
If movement in air about <min> km/h and about <min> satellites show GPS direction else show compass yaw.
This will avoid changing direction on copters with weak GPS signal when hovering (there is always statistical movement without useful direction vector).
Michel Kosloff said:
Thank you, coordinates are now correct, perfect.
The flight-direction may need some more thoughts and discussion.
Loaded today MAVLink2Hott 1.4 into a pro mini board.
It works great with my MC32 and GR-16.
The first thing I noticed is that the GPS coordinates are not correct: Graupner Display shows coordinates in dd° mm.mmm' format.
When you compare the position from missionplanner in dd.ddddd° format at this website: http://gpso.de/maps/ with position from transmitter display, you will notice different locations.
You can find my conversion function https://github.com/j-lang/MAVLink2Hott/blob/master/Functions.ino from line 130.
Which direction shows the "DIR:" field? My copter is oriented to north, missionplanner shows 11° and DIR: 196°? Home-direction shows 0 because copter is on ground.
Thank you for making the interface configurable via textmode!
Can you change old flightmode "hybrid" to new "position hold"?
Thank you very much Michel.
I download later latest version and check it!
If you tell me the changings I am able to look more detailed after them.
I did about 10 flights with the 1.3 version and it was very pleasant and useful. :)
Current and capacity work very good, height made a few minor mistakes in low altitude, I try to check it again with connected Mission Planner.
Started a git project following this idea:
https://github.com/j-lang/MAVLink2Hott
will this work on a graupner mz-24?
I haven't tested this with MZ though I only have MX series now, but it should work.
I tried you code with a Mini Pro and MC32.
GPS, voltage, vario, flightmodes work.
I use a voltage and current sensor, both are shown in Mission Planner but not in HOTT.
Of course mAh used and so on can''t be shown too.
Heading is shown as soon I have a GPS lock, but more precise and fast would be the heading created by the internal/external compass?
Are these things not yet well implemented because of the missing Air Esc?
As I have some HOTT values, my setup seems to work.
BTW, the MC32 and GR16 are both on newest firmware, the Pixhawk2 runs with latest Firmware too, configuration is hexa.
Very nice work Michel since now!
For those who are afraid using a 5V input signal:
With mentioned 1,5k resistance it seems to work.
I used a 3,3V Arduino Pro before and, for some reason I did not research, it don't work.
Maibe input signal from Pixhawk is too high, but as written, you can use a 5V input to receiver with the resistor without problems.
-
1
-
2
-
3
-
4
-
5
of 5 Next