Firmware SHUTDOWN: MCU fried?
Hello everyone,
After a few weeks I booted my VC3.1 again and now it crashes when I try anything (homing, heating up, etc.). Also, the 4028 fan no longer starts at 100% when booting up, which it used to do.
I have had an Octopus 1.1 installed since October 2021 and never had such problems. Could it be that the MCU is defective? How should I proceed with troubleshooting?
10 Replies
Something is wrong with your wiring
I didnt change anything...🫤
That doesn't negate the fact that all the problems you described are caused by wiring issues
Ok, point taken. But which wires? It happens when I try to home or to heat up hotend/bed. Those two things arent related as far as I can tell.
I can't tell you, but something is shorting or broken if the fans aren't going 100% during startup when they used to. Start unplugging things and seeing if the problem goes away. Then investigate why that item is causing the issue. This is going to involve a lot of investigations and only you can do that
OK, now with nothing at all attached but the RPi, I get
I2C NACK error.
Any ideas?
never seen that error before
did you remove the drivers and everything?
Yes, everything
Maybe firmware got corrupt somehow, but if it were me I would treat the board as faulty and replace it
I also reflashed it, to no avail. Replacement is already ordered.