plargent
RRCRat Rig Community [Unofficial]
•Created by plargent on 2/3/2025 in #ratos-support
Broken SD card boot loader.
My messages above may be out of order. The Answer Overflow machine seems to have deleted at least one of the posts.
7 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 2/3/2025 in #ratos-support
Broken SD card boot loader.
Here is the original post:
I had a working RatOS 2.1 working on my RR.VCore3 and then whoops. I pulled the SD card while the Pi was still on. Now the Boot Loader does not work. The FAT32 partition and the EXT4 partition seem to be intact and I can get all the files from them on another linux machine.
So I:
Made a fresh SD card from the RatOS 2.1 image.
Booted the SD card on the rPi so the EXT4 partition would resized to take all (64 GB) available space.
Moved SD card to another machine and mounted the EXT4 partition.
Erased all files and directories from the EXT4 partition (RM -r *)
Copied all files, directories and file attributes from the original SD to the new EXT4 partition (CP -R -f -p -v Source SDDestination)
7 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 2/3/2025 in #ratos-support
Broken SD card boot loader.
The original RatOS SD had many OS, RatOS, Klipper, ... patches applied
The RatOS setup had been completed
The printer.cfg had been customized.
It has been operating for at least a month.
What would be the correct procedure to copy a RatOS settup from a backup to a new SD card?
The whole ext4 partition?
Just some directories?
Just some files?
If this is not possible I will redo the RatOS setup/config and my customizations.
7 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 2/3/2025 in #ratos-support
Broken SD card boot loader.
Things went well ... I could see the boot process on the small touch screen. Screen is small and almost unreadable.
Then the boot process stops.
the last few lines include:
starting init: /bash/sh exists but couldn't execute it. (error -5)
Kernal Panic: Not Syncing. No working init found ...
[ end kernal panic - not syncing. no working init found ...
7 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 2/3/2025 in #ratos-support
Broken SD card boot loader.
The original RatOS SD had many OS, RatOS, Klipper, ... patches applied
The RatOS setup had been completed
The printer.cfg had been customized.
It has been operating for at least a month.
What would be the correct procedure to copy a RatOS settup from a backup to a new SD card?
The whole ext4 partition?
Just some directories?
Just some files?
If this is not possible I will redo the RatOS setup/config and my customizations.
7 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 2/3/2025 in #ratos-support
Broken SD card boot loader.
Things went well ... I could see the boot process on the small touch screen. Screen is small and almost unreadable.
Then the boot process stops.
the last few lines include:
starting init: /bash/sh exists but couldn't execute it. (error -5)
Kernal Panic: Not Syncing. No working init found ... [ end kernal panic - not syncing. no working init found ...
Kernal Panic: Not Syncing. No working init found ... [ end kernal panic - not syncing. no working init found ...
7 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 1/15/2025 in #ratos-support
RatOS for Raspberry Pi5 ?
Thanks for the info. 🙂
You kept me from wasting a lot of time.
I was doing annual maintenance on the VCore and was upgrading to rPi 5 because I had an extra rPi5.
I will keep on the rPi4 until Ratos is ready.
I will keep on the rPi4 until Ratos is ready.
6 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 6/22/2023 in #fix-my-printer
Broke my MCU Octopus v1.1 and am trying to get the replacement operating
I have the working Rat-OS running on the rPi. It reports to be 'RatOS v1.2.4-4-g898b8ae' and claims "UP-TO-DATE". I never notice an update of Rat-OS from V1 to a V2. I assume that there is not an automated upgrade so I will start the adventure of making a new SD card with the newer RatOS V2.
12 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 6/22/2023 in #fix-my-printer
Broke my MCU Octopus v1.1 and am trying to get the replacement operating
I was hoping that magic would happen and Klipper would reattach and flash it automatically. This did not happen.
12 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 6/22/2023 in #fix-my-printer
Broke my MCU Octopus v1.1 and am trying to get the replacement operating
Agree. I setup my original MCU two years ago. I can't find the instructions on how to do this now. Please point me in the right direction.
12 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 6/22/2023 in #fix-my-printer
Broke my MCU Octopus v1.1 and am trying to get the replacement operating
12 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 6/22/2023 in #fix-my-printer
Broke my MCU Octopus v1.1 and am trying to get the replacement operating
I will start reading that document and following it.
In the meantime I was following other threads and tried: ran "dmesg -w" on the rPi. I get the following when I power on the MCU: [ 2817.384521] usb 1-1.2: USB disconnect, device number 3 [ 2906.012880] usb 1-1.2: new full-speed USB device number 5 using xhci_hcd [ 2906.152720] usb 1-1.2: New USB device found, idVendor=0483, idProduct=5740, bcdDevice= 0.00 [ 2906.152744] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 2906.152763] usb 1-1.2: Product: BIGTREE_OCTOPUS CDC in FS Mode [ 2906.152831] usb 1-1.2: Manufacturer: STMicroelectronics [ 2906.152859] usb 1-1.2: SerialNumber: 203631714E53 [ 2906.157965] cdc_acm 1-1.2:1.0: ttyACM0: USB ACM device
In the meantime I was following other threads and tried: ran "dmesg -w" on the rPi. I get the following when I power on the MCU: [ 2817.384521] usb 1-1.2: USB disconnect, device number 3 [ 2906.012880] usb 1-1.2: new full-speed USB device number 5 using xhci_hcd [ 2906.152720] usb 1-1.2: New USB device found, idVendor=0483, idProduct=5740, bcdDevice= 0.00 [ 2906.152744] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 2906.152763] usb 1-1.2: Product: BIGTREE_OCTOPUS CDC in FS Mode [ 2906.152831] usb 1-1.2: Manufacturer: STMicroelectronics [ 2906.152859] usb 1-1.2: SerialNumber: 203631714E53 [ 2906.157965] cdc_acm 1-1.2:1.0: ttyACM0: USB ACM device
12 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 12/9/2022 in #ratos-support
How to configure a SuperPinda in RatOS & Klipper on a BTT Octopus?
Problem Solved: It turns out that this SuperPinda nockoff from Amazon is wired differently from an actual SuperPinda. The difference is in the color of the wires leaving the probe. The actual SuperPinda uses a brown wire for 5V, blue for ground and black for signal. The Amazon page made this same claim too.
This nockoff probe bought from Amazon actually uses Brown for 5V, Black for Ground and Blue for signal. Notice that the meaning of the blue wire and black wire are reversed. A Prusa printer would not have a problem because the SuperPinda nockoff manufacturer reversed the Brown and Black wires at the 4 pin Molex connector that would plug into a Prusa.
Since my BTT Octopus uses 5 pins from the motherboard and requires a 5 pin Dupont connector, I needed to replace the Molex connector with a Dupont connector. I cut off the 4 pin Molex and soldered on a 5 pin Dupont using the color codes from SuperPinda and the Amazon web page. This resulted in a non-functioning probe. Now that I swapped the blue and black wires at my Dupont connector the probe is functioning. I don't know how to document this or alert somebody because the actual probe I purchased is not explicitly named and they may have already fixed the issue on their manufacturing line. The company that provided the probe to Amazon is not a manufacturer either., they are just a reseller for the probe. I hope this thread helps somebody that fell into the same trap that I did.
This nockoff probe bought from Amazon actually uses Brown for 5V, Black for Ground and Blue for signal. Notice that the meaning of the blue wire and black wire are reversed. A Prusa printer would not have a problem because the SuperPinda nockoff manufacturer reversed the Brown and Black wires at the 4 pin Molex connector that would plug into a Prusa.
Since my BTT Octopus uses 5 pins from the motherboard and requires a 5 pin Dupont connector, I needed to replace the Molex connector with a Dupont connector. I cut off the 4 pin Molex and soldered on a 5 pin Dupont using the color codes from SuperPinda and the Amazon web page. This resulted in a non-functioning probe. Now that I swapped the blue and black wires at my Dupont connector the probe is functioning. I don't know how to document this or alert somebody because the actual probe I purchased is not explicitly named and they may have already fixed the issue on their manufacturing line. The company that provided the probe to Amazon is not a manufacturer either., they are just a reseller for the probe. I hope this thread helps somebody that fell into the same trap that I did.
18 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 12/9/2022 in #ratos-support
How to configure a SuperPinda in RatOS & Klipper on a BTT Octopus?
The probe was purchased from Amazon. The description is "FYSETC Prus MK3s+ SuperPinda Probe Replacement Auto Bed Leveling Sensor Probe 5V 3PIN Compatible with Prus MK3/S/+, MK2.5/S, Mini/+ 3D Printer". A "SuperPinda Probe Replacement" may not be an actual SuperPinda. The description does not give a better description or part number. It does mention the purpose and color coding of the probe's wires which are the same as a real SuperPinda. Since it mentions that this is 'designed' to be a replacement for SuperPinda on specific models of Prusa 3D printers they may have altered it to meet a specific requirement of those Prusa printers.
I have hooked the Almost_SuperPinda up to 5V and ground and monitored the input wire while moving metal to and from the probe tip.
The input wire goes from 0.0V to 3.3V as the metal is moved back and forth when the input wire goes to ground.
The resistance of the probe goes from 0 Ohms to 14 Ohms when input wire goes to ground.
The input wire goes from 0.0V to 0.7V as the metal is moved when the input goes to the Octopus.
The resistance of the probe goes from 0 Ohms to 14 Ohms when input wire goes to the Octopus. This is unchanged. A voltage change from 0.0V to 0.7V should not be enough to trigger the Octopus. There must be some additional wiring needed to enhance this to be a usable signal. I will keep researching. Does anybody know if a resistor is needed here? If so, what size resistor?
The input wire goes from 0.0V to 3.3V as the metal is moved back and forth when the input wire goes to ground.
The resistance of the probe goes from 0 Ohms to 14 Ohms when input wire goes to ground.
The input wire goes from 0.0V to 0.7V as the metal is moved when the input goes to the Octopus.
The resistance of the probe goes from 0 Ohms to 14 Ohms when input wire goes to the Octopus. This is unchanged. A voltage change from 0.0V to 0.7V should not be enough to trigger the Octopus. There must be some additional wiring needed to enhance this to be a usable signal. I will keep researching. Does anybody know if a resistor is needed here? If so, what size resistor?
18 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 12/9/2022 in #ratos-support
How to configure a SuperPinda in RatOS & Klipper on a BTT Octopus?
When pin is set to ^probe_pin the Endstop Z and Probe values are always set to TRIGGERED. When pin is set to ^!probe_pin the values are set to OPEN. This makes since. The value does not change when metal is placed against the probe and the refresh arrows are pressed. So I am back to wondering if this pin is actually acting as a input pin ... So I connected the input pin to +5V and get one value and I get the opposite value when the input pin is connected to ground. This proves to me that the input pin is correctly setup and functioning correctly. Since the probe does not have a similar effect I need to shift to thinking of the probe as the true problem domain.
18 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 12/9/2022 in #ratos-support
How to configure a SuperPinda in RatOS & Klipper on a BTT Octopus?
I will try changing the pin assignment in the user overrides section of printer.cfg file.
Current: pin: ^!probe_pin
Will change to: pin: ^probe_pin
18 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 12/9/2022 in #ratos-support
How to configure a SuperPinda in RatOS & Klipper on a BTT Octopus?
One other observation: The Endstops panel on the Machine tab shows FOUR things being monitored. They are Endstop X, Endstop Y, Endstop Z and Probe. I would expect to see X, Y and Probe. I don't know if Endstop Z is part of the problem or if I should expect to see it.
18 replies
RRCRat Rig Community [Unofficial]
•Created by plargent on 12/9/2022 in #ratos-support
How to configure a SuperPinda in RatOS & Klipper on a BTT Octopus?
18 replies