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?
55 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.
OK, this is getting very infuriating. I have now replaced the RPi and the Ocotpus, together with all the stepper drivers. I also did a fresh install of the most recent RatOS.
With nothing except the heaters and temp probes attached to the MCU, it wont even heat.
Trying to get it to move in any direction, (setting the kinematic position) I get this error.
I am pretty much lost at the moment, dont even have an idea where to begin with troubleshooting and would really be grateful for any advice from the pros out there.
Which drivers are you using (TMC model and manufacturer and version)?
Also please post a debug-zip
It's likely you accidentally picked the wrong board or something.
TMC2226 V1.0
BTT?
yes
I need a pic of your board and a debug-zip
I will be happy to go through the wizard again...
Let's see what's wrong first 🙂
A pic? Like the actual board how its wired or just the board?
Like the actual board, so i can check all the pin assignments, the model number, the chip numbers etc.
OK, just so you know, I have 2 now, both have the exact same issue
which one should I take a picture of, for me it dosnt matter
Yep, just a pic of the current one (which to be fair gives you a different error)
No, the errors are just different, depending on what I do 😉
Let me get you that pic
the logs in the debug zip will show what's going on
OK, I'll get right to it
Now i just need the debug zip
Standby
I'll have to look into it later though as i've gotta go for a few hours.
Sure. I have to reflash the board.
Before you go do all of that please make sure you grab a debug zip after reproducing the errors you're getting
If you shut down your pi, the logs will rollover
I just reproduced the error. Where is the zip?
perfect, there's a link in the sidebar of the configurator (ratos.local/configure)
This one has the IFCNT error on stepper_z1 (means the driver isn't responding)
So all good
I'll take a look
You need to remove this
Besides that i don't see any configuration issues.
Are all the driver jumpers set like the two middle ones in the above picture?
Yes
I have to remove the power jumper? Its been there since the beginning 😄
Now the board isnt powered?
It connects the pi's USB 5V with the onboard 5V rail, it's just trouble.
How do I power the board correctly?
via 24v
All connectors are attached but the board has no power?
That's your power
huh? The board has no power without the jumper?
That explains your driver problems
yupp..
is your PSU dead?
Should I check my 24V wiring in that cas?
yes
And now i really gotta go 😂
Will check in on you when i'm back
Lemme get my multimeter and check the PSU 😅
I will update you
Could be a brown out / short somewhere in your 24V wiring
It very well could be the PSU..
If you board isn't getting powered, that's the most likely culprit for sure
anywhoo, ttyl
good luck for now!
It's the PSU. The one thing I assumed was OK and never checked 🙈
And you found it within 5 Minutes 😅
Any suggestions for a good quality replacement?
Meanwell! 🙂
Get a meanwell UHP-series. It's cooling is passive, its so nice to not hear the damn fan