About

Gender

Male


Location

Stockholm


Please tell us a bit about your UAV interest

I have been flying model airplanes for more than 20 years and have always liked programming. UAVs combine these intrests.


Hometown:

Stockholm


Activity Feed

Jonas Feldt replied to Jonas Feldt's discussion Monitoring a second battery with the APM
"I looked at KV-team mod at first to see if I could use it, but the code is very different. But I guess it will be very simple to implement voltage monitoring for a second battery directly in minim-osd when there is a field for it on the display.…"
Apr 27, 2014
Jonas Feldt replied to Jonas Feldt's discussion Monitoring a second battery with the APM
"That was my initial thought, but it was easier just copy-pasteing code from the main battery voltage monitor. And it feels like a lot have to be changed if you also move the main battery voltage to the BATTERY_STATUS message, like current_battery…"
Apr 27, 2014
Jonas Feldt replied to Jonas Feldt's discussion Monitoring a second battery with the APM
"Nice to see other people in this thread! :)

I have made all the changes needed in the ArduPlane and ArduCopter parts of ArduPilot. What has stopped me is MinimOSD, because I have not succeeded in making it understand the new MavLink message that…"
Apr 13, 2014
Jonas Feldt replied to Gábor Zoltán's discussion Adding extra functions to MinimOSD
"I could really use your help, I have not succeeded displaying the aux voltage in the OSD!

I have tried all the debugging techniques I can think of, but it is really hard to debug something that needs it's serial port for receiving data from the…"
Apr 8, 2014
Jonas Feldt replied to Gábor Zoltán's discussion Adding extra functions to MinimOSD
"Thank you for your answers! You might be correct, but I find the confusion between id 1 and 34 both in the ArduPilot code and in the MissonPlanner code. Both the .h file and the c# file are generated from the same XML-file.
When I included the same…"
Apr 1, 2014
Jonas Feldt replied to Gábor Zoltán's discussion Adding extra functions to MinimOSD
"Hi,

I have successfully implemented a second battery monitor in the Ardupilot (Arduplane and Arducopter). At the moment you can only set it up using a modified version of the Mission Planner software.

I have tried (and failed) to build a MinimOSD…"
Mar 28, 2014
Jonas Feldt replied to Jonas Feldt's discussion Monitoring a second battery with the APM
"And my monologue continues! :)

I successfully compiled a new version of the Mission Planner software, which made it possible to set the voltage multiplier for the second battery, and turn monitoring on and off.

Now I just need to convince some…"
Mar 9, 2014
Jonas Feldt replied to Jonas Feldt's discussion Monitoring a second battery with the APM
"Yes, I'm also surprised this thread is so quiet!
I reckon more than half the FPV-planes around uses a second battery for the video TX and camera, and of course everyone should want to monitor that battery. My current OSD has two voltage monitors,…"
Mar 9, 2014
Jonas Feldt replied to Jonas Feldt's discussion Monitoring a second battery with the APM
"I have now successfully tested the aux battery monitoring by looking at the SYS_STATUS message. I can set the parameters in the all config parameters tab in Mission Planner, which means I can enable monitoring and set voltage multiplier value.…"
Mar 5, 2014
Jonas Feldt replied to Jonas Feldt's discussion Monitoring a second battery with the APM
"I got a tip from Robert Lefebvre who told me to use the gcc 4.7.2-version of the Arduino IDE to compile the code, and now the sketch is small enough! (238 012 bytes of 258 048)
Now I just need a voltage divider to connect a 3S battery to an analog…"
Mar 3, 2014
Jonas Feldt replied to Gábor Zoltán's discussion Adding extra functions to MinimOSD
"Hello again!

I have now implemented the second battery monitor and have successfully compiled the code. But I will have to wait for the clever guys to make the ArduPlane sketch smaller before I can upload and test it. Here is the…"
Mar 2, 2014
Jonas Feldt replied to Jonas Feldt's discussion Monitoring a second battery with the APM
"Thanks. The code compiles and the aux battery voltage should be sent via an extended MavLink status message, and a low aux battery voltage should trigger an alarm. But of course I cannot test it until I can merge a smaller ArduPlane sketch with my…"
Mar 2, 2014
Jonas Feldt replied to Jonas Feldt's discussion Monitoring a second battery with the APM
"I have now started implementing monitoring of a second battery in ArduPlane.

If someone is interested you can look at my repository here:
https://github.com/Xtreamer/ardupilot

At the moment the sketch is too big for the Ardupilot, but I (or…"
Feb 27, 2014
Jonas Feldt posted a discussion
Hi all,I'm currently setting up the Ardupilot on a Skywalker, and as always I will use a separate battery for camera/OSD/VTx. I am flying with a 4S LiPo and am trying to avoid step down converters and filters.Are there any plans to add monitoring of…
Jan 30, 2014
Jonas Feldt replied to Gábor Zoltán's discussion Adding extra functions to MinimOSD
"Hi!
I would like to see the voltage of a second battery on the OSD, and have found some references to a "voltage B" in the MinimOSD-extra source code. But it is commented out. I am going to connect the second battery to an analog port on the APM…"
Dec 18, 2013