We have just experienced a loss of comms with the magni-serial connection. I can confirm this from the lack of publishing to the “diagnostics” topic, manually starting magni throught the base.launch file, and following your troubshooting guide (including the test script) - no comms.
Motors are powered fine (we can feel the resistance).
Everything on this system has worked fine for months. No recent changes or software updates, just out of the blue stopped working.
Is there anything else to check that can cause a sudden loss of serial comms? ie. fuses? connection?