ModalAI Forum

Hi @Vinny, FYI I have not yet received it.

@Vinny any ETA on this?

Hi @Vinny,

What is your recommendation at this point? I can try to fix the cable myself, but please advise whether swapping the black and the red wires is the only change needed. If a replacement cable will be sent in the next few days, I'd rather wait for it.

Thanks,
Victor

Hi @Vinny,

I submitted the RMA, sent back the FC2 and got a replacement, along with two MCBL-10 cables. Before attempting to flash it with QGC I checked the voltage as lo and behold both cables showed -5.22 volts. Picture attached. Glad I did the test first or I would have fried the replacement FC2

Hi @Vinny, given my Flight Core 2 got extremely hot, do you think there is a good chance it is now fried? Or should I wait for the new cable to see if it will work? My preference is to not waste time and just get a replacement for both items if that is OK with you.

Thanks,
Victor

Hi @Vinny,

If this is likely to be the explanation for the problem I reported, how can I get a good replacement cable? I'd rather try that first before going the alternative route of using the power module.

Thanks,
Victor

@Moderator yes, or at least I tried to. In this step:

 confirm the “Serial Port” is correctly listed

QGC listed COM3 - COM6 but I couldn't determine easily how those map to my USB ports. At that point I noticed that the device is getting VERY hot, so decided to stop.

Is it normal for it to get so hot? Combined with the "power surge" warning I thought it was safer to stop before smoke.

I was able to use QGC to flash my Pixhawk 2.4.8 with PX4 with no problems, so I am pretty sure there is nothing wrong with the port or with QGC.

Hi, any word on this? At this point I am not able to use this product and wonder whether it is defective and needs to be replaced. Please advise.

I have a cheapo FlySky FS i6X RC transmitter / receiver from an earlier drone project, and I wonder if it would work with the Flight Core v2 before I go ahead and purchase one of the more expensive recommended options like Spektrum or FrSky (or the RadioLink AT10 suggested in another post).

I am trying to setup my new Flight Core 2, but when I connect it to a USB port on my Windows 11 laptop with QGC 5.0.6 I get a message pop up saying "Power surge on the USB port".

The Flight Core 2 also got pretty hot -- I hope it didn't get fried!

Also, I am not clear from the rather brief documentation what file I need to download and use for the firmware update.

Do I need to use SDK 1.1 specifically or should I use the latest (1.5)? That directory contains

modalai_fc-v2_1.14.0-2.0.105.bin 05-Jun-2025 22:24 1867164
modalai_fc-v2_1.14.0-2.0.105.px4 05-Jun-2025 22:24 1758094
modalai_fc-v2_1.14.0-8.104.3.bin 05-Jun-2025 22:37 1896744
modalai_fc-v2_1.14.0-8.104.3.px4 05-Jun-2025 22:37 1786598

but the doc mentions voxl_SDK_*1.1.0.tar.g.