It is probably worth upgrading the software to the latest release. The version you have is really old. I guess I can't say for sure that it will fix the problem, but it's likely to match the docs better for getting going https://docs.modalai.com/voxl2-system-image/

Can you try to run the server manually: voxl-dfs-server and see what the output says

I assume you are referring to VOXL 2? If so, there is no PWM output on VOXL 2 as the Snapdragon processor onboard does not have PWM output. If you already have another flight controller you can use VOXL 2 as the companion computer to that flight controller https://docs.modalai.com/voxl2-external-flight-controller/

@Alex-Gardner Thank you for the update. Will be testing this pretty soon.

Hi @Vinny Thank you for prompt response. I understand the current state of development of TDK Mezzanine on VOXL2. Noted. No further information needed. Thank you

@Kevin-Racktoo Glad we can help. If you would like us to review your schematic for Voxl2 integration before you tape-out, just let us know! You can use our contact form to reach out and we'll respond back. https://www.modalai.com/pages/contact-us Thanks!

On my setup yes that was all I needed to do, but we are still going to do a "full proper tune" on our S500 based frame (Sentinel dev drone) and I will confirm with you that we are getting performance as expected after this and share a video. Our flight test team will be doing that this week, thanks for the patience!!!

@Alex-Kushleyev I am making a quadcopter with voxl2 and the modalai esc. I am trying to calibrate the esc. I am able to run the script but having this issue while scanning the esc with ftdi cable although I am able to run the motors with voxl2 J18 port. /voxl-esc/tools$ python voxl-esc-scan.py INFO: Device and baud rate are not provided, attempting to autodetect.. Scanning for ESC firmware: /dev/ttyUSB0, baud: 250000 Scanning for ESC firmware: /dev/ttyUSB0, baud: 2000000 Scanning for ESC firmware: /dev/ttyUSB0, baud: 921600 Scanning for ESC firmware: /dev/ttyUSB0, baud: 57600 Scanning for ESC firmware: /dev/ttyUSB0, baud: 115200 Scanning for ESC firmware: /dev/ttyUSB0, baud: 230400 Scanning for ESC bootloader: /dev/ttyUSB0, baud: 38400 Scanning for ESC bootloader: /dev/ttyUSB0, baud: 230400 Scanning for ESC bootloader: /dev/ttyUSB0, baud: 921600 ERROR: No ESC(s) detected, exiting. Is there any way to calibrate esc using voxl2?

https://docs.modalai.com/modal-esc-datasheet/

Hi @mlarsen , If you're familiar with QGroundControl, similar to the pixhawks, you can use the Analyze > Logs feature to grab them (over an IP network not USB...) [image: 1667487221073-f8c31789-b1a1-4aa9-a498-d789ade3d86c-image.png] We are also saving this on disk here on VOXL2, eg: voxl2:/$ cd /data/px4/log/ voxl2:/data/px4/log$ ls sess001 sess003 sess005 sess007 sess009 sess011 sess013 sess015 sess002 sess004 sess006 sess008 sess010 sess012 sess014 voxl2:/data/px4/log$ ls sess001 log001.ulg log002.ulg log003.ulg Using the USB connection over adb, you can pull from device to your host system, eg: adb pull /data/px4/log/sess001/log001.ulg .

Same as every PX4 quadX: https://dev.px4.io/master/en/airframes/airframe_reference.html#quadrotor-x [image: 1666970979497-b3515d73-ffea-40c8-bacd-3c2584cfc059-image.png]

Hi @Tamas-Pal-0 , You can calibrate outside of the system fully using something like this: https://www.youtube.com/watch?v=OOplk52R4no I've not done this myself.... but it's the original way to do this from what I understand

Hi @Mark-Lee , Chad is correct in that we have not tried it, but my idea is that if you wanted to access the Linux shell on the modem card, you would need a modem development platform from Quectel. Here is an example I found online (please do your research to ensure this will work for you, but I do see they mention serial port access): https://www.aliexpress.us/item/3256803611119964.html?gatewayAdapt=glo2usa4itemAdapt&_randl_shipto=US In our architectures, we do have a mechanism to talk to the serial port over software using one of the QUPs, but there has been no need to do so, and would be a costly SW expense to develop it. If you are willing to void your warranty (not recommended), I can show you which resistors have it and you could try to solder on to them, but you are better off with the Dev Kit IMHO.

Moved to https://forum.modalai.com/topic/1481/5g-add-on-board-accessing-the-quectel-module-linux-shell

@Vinny Sounds good, I'll look at the expansion board for J3. In the past, I've had issues maintaining 40MB/s write speeds over USB2, not sure if it was hardware or software, but thus my jump to USB3. Thanks for the info about the Mythic, I'll reach out regarding that.

I've been meaning to get this into a user guide as well, but for the applications processor GPIO, here's an example of setting IO programmatically, in this case GPIOs 46/159: https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-bind/-/blob/master/src/voxl-bind.c#L58 https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-bind/-/blob/master/src/voxl-bind.c#L147

Hi @pfranklin , Sorry for the lag. The VOXL 2 architecture has a few processors, the I2C on the 5G modem port is mapped to the applications processor. The I2C we use by default in PX4 is connected to a DSP (image here https://docs.modalai.com/images/voxl2/m0054-px4-block-diagram-0.4.png). For each driver we've used on the DSP, we've had to make a few small mods to get going. Here's an example of an I2C driver we use on the DSP for talking to a baro: https://github.com/modalai/px4-firmware/tree/voxl-dev/src/drivers/barometer/icp10100 It's enabled in the build here: https://github.com/modalai/px4-firmware/blob/voxl-dev/boards/modalai/rb5-flight/qurt.cmake#L55 Are you already using J19 pins 3 and 4? If not we could hijack those from the mag driver perhaps and you could use the sensor there.