Okay, so after tinkering a bit yesterday, I've been unable to figure out the aux button mapping process. Could you kind of walk through a step by step on what exactly I need to configure? I think what I am most confused on is what on my RadioMaster GX12 transmitter counts as an "AUX button". I initially though the 1-6 buttons, but those all seem bound to flight modes so I am not really sure.
Appreciative of your help!
Thanks for your reply. I ended up just writing a small bash script to toggle the pad. I then probed all the exposed pads on the ESC in order to find which one was toggling battery voltage, so I did discover the correct pads as you have circled above. If you're open to the suggestion, I might make this more explicit in the documentation is it is not very obvious at first read. Maybe including the above picture would suffice since there's no labeling in the docs or on the silkscreen that makes this explicit.
My battery voltage is 6S. I do have concerns about the total current draw being capped at 500mA. My VTX module pulls 500mA at baseline, and I've observed in the field it pulling up to 600mA when transmitting at full power. I will have to rethink my harness design if I am truly limited to only 500mA.
I am going to attempt the PX4 integration using my hand controller and will report back if I have troubles. If you do have any notes on how to set that all up please do let me know.
Again, very appreciative of your reply. Thanks!
Update:
I did find this (link) old post on the forums from 2024. From what I can gather, the voxl-esc-gpio.py command is supposed to be configured to toggle the AUX power pad on the ESC. However, even though I am running the script with the --val flag alternating between 0 and 1, I see 3.3V on that pad at all times. Maybe I have something incorrectly configured here? The 3.3V reading is confusing because per the previous forum discussion this script is supposed to be for VTX power, but I would expect a VTX power source to be battery voltage per the documentation
Currently, I'm just trying to test this in the CLI right now. I am eventually wanting this to work concurrently with PX4.
Hi all,
Looking for guidance on wiring my FatShark Aura Analog VTX module to my FPV 4in1 ESC. I would like to take advantage of the software defined power switching mentioned in the datasheet, however, it is unclear to me where exactly on the ESC I need to solder my leads to in order to use this feature.
Please advise. Thanks!
For reference (link to datasheet) :
@Eric-Katzfey
Yes sir. I think I see now what you are suggesting. Is it fair to say that any application trying to do anything with Mavlink on this system must do so over UDP connection to the voxl-mavlink-server? I think I was operating on some incorrect base assumptions. My apologies! Greatly appreciative of your help.
@Eric-Katzfey
Thanks for your reply! I am not attempting to establish communication via UART. I have already successfully been communicating the the FC/PX4 via WiFi, ethernet, and USB-C through the ADB shell (link). What I am talking about doing in my post is fundamentally different. I have an ELRS receiver plugged into J19 on the VOXL2. As mentioned in the above post, I have verified that the ELRS receiver/transmitter works for RC inputs over CRSF.
What I am trying to get working now is using the transmitter for QGC connection. This is possible on other flight controllers by connecting to the transmitter's local WiFi or via USB, but this does not seem to be working in the same way for the VOXL2. I imagine I am missing a specific configuration option or setting somewhere, or maybe this just isn't possible since Mavlink seems to be only communicated via UDP on this device. That is what I am looking for clarity on.
Hi all,
Here is my setup:
What I would like to do is connect to QGC via the transmitter. However, I am unsure how to go about doing this or if it is even possible on the VOXL2. I've successfully established RC with the FC in CRSF link mode; I can see the stick inputs updating when connected to QGC via USB-C.
On other flight controllers, I have been able to establish transmitter/QGC connection by putting the transmitter in "Mavlink" mode and connecting to the transmitter WiFi. This does not seem to be working with my VOXL2. I've tried changing the /etc/modalai/voxl-px4.conf "RC" setting to "external" and "crsf_mav" and neither seems to work (maybe I'm missing something).
Any help would be greatly appreciated. Happy to provide more information as needed.