LimeSDR XTRX Operation on Raspberry Pi 5 via mPCIe HAT

[osqzss]

Just after posting the questions above, I came across a very informative post by @tszn.

XTRX not found

Dear All, I come with good news, for the ones, who want to use the XTRX on the RPi5, and share with you this post as sort of Manual and Lessons Learnt, of how I was able to get my unit(s) to work. Note that I use the pineboards (former pineberrypi) HatMPCIe (my version is 2024/V1), as miniPCIe interface. I got a multitude of other adapter combinations first to PCIx1 and then to mPCIe, however I’ve been using the pineboards products from the beginning and would recommend all their products -…

My LimeSDR XTRX board does not have R114 populated, but it was still consistently recognized as a Multimedia audio controller, and LED2 was blinking. I decided to leave R114 open and move forward.

I followed the instructions and successfully built LimeSuiteNG as described in Step 2.2. I skipped Steps 2.3 and 2.4, and after that, running “limeDevice --full” correctly detected the LimeSDR XTRX without any trouble.

Many thanks to @tszn for the detailed and helpful guidance.

That said, I still have some concern about the board’s temperature. It runs noticeably hot even when idle. I saw a related comment by @0x12BFB9FA, but I’m still unsure if this behavior is considered normal or requires attention.

Temperature of LimeSDR XTRX

Hey, when running with sample rates around the max possible mine definitely gets uncomfortably warm (>85C, which is what the original fairwaves XTRX pro was rated for) [image] I ended up adding a small 40mm fan to actively cool it (after which it hovers ~50-55C on the onboard temp sensor)

Any insights on the thermal behavior of the XTRX would be appreciated.