RRF36 disconnecting mid-print
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@justGuner What is the Led that sort of fades out? Is that the normal status LED? If you put a firmware.bin file on the root of the sd card and reboot the board do you see any leds flicker for a short while after power on? Also if you check the card after a waiting a short while has the firmware.bin has the name changed to something else?
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@gloomyandy If you mean the green one I think it's a power indicator.
If you put a firmware.bin file on the root of the sd card and reboot the board do you see any leds flicker for a short while after power on?
Yes, and after that it repeats the previous behaviour.
Also if you check the card after a waiting a short while has the firmware.bin has the name changed to something else?
It turns into a cursor file.
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@justGuner So it sounds like you still have a bootloader. If that is a power led then it looks like something is pulling the power supply down very low and that is causing the board to reboot. You could try removing everything from your config.g file (keep a copy) other than the commands to setup the wifi and see if that allows the board to boot. Are you sure you have not made any other changes, for instance to any of the wiring or to the config.g file?
If the above does not work then I'd suggest disconnecting everything from the board and see if that allows it to start.
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@gloomyandy ok, removing everything from the board (except the esp32) after deleting everything in the config file except the networking stuff lets the board boot up. I can acces the board through web control. I guess I will shut it down and start plugging in stuff untill it stops working again.
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@justGuner Yep that's the process. Good luck!
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@gloomyandy Everything works fine untill I connect the efd to the board. After that, it's the same story again...
Closer inspection of the efd doesn't reveal any burns. It also passes the smell test (no burnt electronics smell)
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@justGuner Sorry what is the "efd" in this context? How is it connected to the board.
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@gloomyandy isn't that what the can adapter from mellow is called? The one connected to the exp ports
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@justGuner Ok so it is the CAN-FD interface. Do you still have the CANBUS connected to the board? If you disconnect that does it still cause problems?
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@gloomyandy No, if I power on the board without the CAN-FD interface, the board boots up just fine.
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@justGuner how do you have that connector wired? post a picture.
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I feel like I should mention that this system worked for the last month, and only just now that I started to print faster it began showing the initial behavior.
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@justGuner With the power off unplug that cable and with a meter check the resistance between them.
As I said above I suspect there is a problem with the CAN bus wiring. Unfortunately if you keep flexing wires they tend to break and have other problems. Maybe post a picture of how the wires are connected at the print head.
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@gloomyandy do you mean the white and yellow wires?
Also, the board refuses to boot up if i have the can adapter connected but not the toolboard.
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@justGuner If you disconnect the connector from with the white and yellow wires in it from the CAN-FD adaptor but connect the CAN-FD board to the mainboard does it boot or not?
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@gloomyandy no, it does not.
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@justGuner Sounds like your CAN-FD board may have died then. Not something I've seen any other reports about. Probably worth examining the CAN-FD board to see if you can see any sign of damage or anything shorting any of the pins.
It seems very odd that the maiinboard seems to start up and only reboots after a short while. If you unplug everything else from the board and just have the CAN-FD connected do you seem the same issue? When you are running these tests how are you powering the board?
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@gloomyandy I honestly can't observe any damage on the CAN-FD board. Is there a posibility that something might have happened to the exp ports on the skr?
If you unplug everything else from the board and just have the CAN-FD connected do you seem the same issue?
Yes, I still have the same issue.
When you are running these tests how are you powering the board?
The board is connected to a 24v psu. I have tried powering the board over usb as well (yes, I did move the vdd-usb jumper for this), but to no avail.
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I'm about to buy a SKR 3, hopefully this will solve the original issue that started this thread. If it still keeps on disconnecting, I'll buy a new cable or replace the original wires that it came with and hopefully that will be the end of it.
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First time power on with the skr 3 ez and the CAN-FD adapter went fine. I guess that means that something went wrong with the exp ports on the skr 2.
I need to print a new mounting bracket for the new board before doing more in-depth testing. I'll also ubdate everything to 3.5.1 .
