Hello, I need some some help writing a code to send a battery status from my raspberry pi to my gcs through pixhawk. I know it sounds simple, but for the last days I have been researching about mavlink on Guide · MAVLink Developer Guide and it seemed overwhelming, I don’t know where to start. I kn…

Hi, from what I understand the communication line is : pixhawk < – > RPI < – > qgc. And, pixhawk usually monitor the battery and send it to qgc. In this setup, RPI is only a transparent tunnel more or less. Have you try using qgc setup to see the battery level? This function is implemented in the …

Hi, thank you for answering. The setup is sensor->rpi->pixhawk->gcs. I am reading the codes here: Pymavlink · GitBook , but couldn’t find a function that could send a BATTERY_STATUS message using values from the sensor. The only that says something about sending a message to qgc, it only sends a tex…

So you want the battery level from a third party sensor on top of the usual battery voltage that QGC <–> Pixhawk exchange. If so, I can’t help. In arduino or other kind of microcontroller, we can convert string into numbers. Maybe you can send the battery level in text form and show it in QGC as a…

Even so, thank you for the answer.

Hi @GRS26 , welcome to the forum! :slight_smile: It’s a bit unclear what you’re trying to do, could you explain a bit more about your setup? In particular: Are you using a Blue Robotics companion image, or just a plain raspberry pi image with pymavlink installed? Are you using QGroundControl as yo…

Thank you for the answer, its exactly this method I was looking for. I tried studying the ardusub page about pymavlink, but couldn’t that specific method, or a more general method to send message, the closest was to send commands. So far my only idea is to find where all the methods of pymavlink ar…

[image] GRS26: I tried studying the ardusub page about pymavlink, but couldn’t that specific method, or a more general method to send message, the closest was to send commands. So far my only idea is to find where all the methods of pymavlink are defined and study, but I realize the code is gig…

Thank you for the answer, it’s been very helpful. I don’t know if you already have, but I found this github page that seems to contain all the methods and some description: PX4Firmware/mavlink_px4.py at master · Zubax/PX4Firmware · GitHub

Send Battery status from companion computer

Blue Robotics Software

Charles (Charles) August 26, 2021, 7:11pm 7

Did you read this?
https://discuss.bluerobotics.com/t/adding-a-sensor-to-mavlink-stream/7985/22

Topic		Replies	Views
Mavlink message for battery status Blue Robotics Software	23	5126	April 13, 2022
Adding a sensor to mavlink stream Companion (Retired) pymavlink	35	8651	January 11, 2024
Send text from Rpi to QGC QGroundControl	6	2483	May 23, 2020
Set gps data via pymavlink Blue Robotics Software ardusub , pymavlink , positioning , sitl , simulate	11	6291	October 12, 2020
MavProxy Flight Battery at -1% Blue Robotics Software	1	1267	June 26, 2017

Community

BR Website

Software Docs

Autopilot Docs

BR and Beyond

Software

Send Battery status from companion computer

Community

BR Website

Software Docs

Autopilot Docs

BR and Beyond

Software

Send Battery status from companion computer

Related topics