SamC
RRCRat Rig Community [Unofficial]
•Created by SamC on 3/13/2024 in #ratos-support
Read-out extruder stepper motor commands
Hi all,
For or application I want to write an extra Pythonscript in klipper for communication with our dispenser. The main problem we have is that we want to read out in the curruntly writen code when the stepper motor for the extruder should be activated at what speed. If we can find that and read that out at the beginning of our script than we can transfer that data and use the GPIO pins of our Pi to activate our syringe.
Does anyone now how to arrange this?
Greetings
A desperate Mechanical Engineer who tries to code
2 replies
RRCRat Rig Community [Unofficial]
•Created by SamC on 2/29/2024 in #ratos-support
Changed position BLTouch
Hi all,
I changed the position of my BLTouch, where can I program the new location so that the bedleveling and bedmesh are still the same as before?
Thanks!
3 replies
RRCRat Rig Community [Unofficial]
•Created by SamC on 2/28/2024 in #ratos-support
Custom-made extruder
Hello everyone
For our custom printer, we want to work with a syringe pump that allows our liquid metal to flow through a custom nozzle. To control this flow, we would like to use the output of the extruder on our motherboard. This output is normally provided to drive a stepper motor. Our Syringe pump works with a different drive so we would like to somehow convert these signals using an Arduino, for example, to something that our syringe can understand. However, this is a fairly complex and perhaps not always accurate process.
Does anyone know if, in addition to the standard outputs on the board (for the stepper motor), there might be additional outputs (e.g. to the TMC2209 board) for reading out the correct printer speed and print command so that we can process it and pass it on to our extruder?
I look forward to your creative ideas 🙂
Thanks!
35 replies
RRCRat Rig Community [Unofficial]
•Created by SamC on 2/23/2024 in #ratos-support
Pre-heating extruder...
Hi,
For my application I'm using a costum extruder without a thermistor. When I start my print it stops at "Pre-heating extruder..." followed by the error "Heater extruder not heating at expected rate". How can I override this error?
In my printer.cfg I already wrote:
[extruder]
min_temp: -120
min_extrude_temp: -120
When I print the G-Code it sets my target temp for extruder on 150°C.
Thanks!
16 replies
RRCRat Rig Community [Unofficial]
•Created by SamC on 2/22/2024 in #ratos-support
Dxf to G-Code
Hi everyone,
As some of you already now I'm building a Ratrig V-core 3.1 so it can print liquid metal. I've a question that maybe not fully related to RatOs but I have a hard time solving it 😅.
For the first part of the project I want to print in a constant z-plane (2D, one layer). In this way I can print just lines and curves I drew in a dxf file for example (like for a laser cutter). What is the easiest way to convert such a dxf file to a GCode that my printer can understand? This is not possible thru regular slicers (I think).
My online research was quite unsuccessful, most programs that I found don't give a useful GCode for the Ratrig printer.
It would be ideal if there is a way thru fusion 360 since I've full access to this program and maybe can use it as well for 3D slicing. I'm aware that possibly manual adjustments are necessary 🥲.
Thanks!
5 replies
RRCRat Rig Community [Unofficial]
•Created by SamC on 2/20/2024 in #ratos-support
MCU 'mcu' shutdown: ADC out of range
I got the following Error:
MCU 'mcu' shutdown: ADC out of range
This generally occurs when a heater temperature exceeds
its configured min_temp or max_temp.
Once the underlying issue is corrected, use the
"FIRMWARE_RESTART" command to reset the firmware, reload the
config, and restart the host software.
Printer is shutdown
How can I solve it? I don't use an extruder or heater temperature sensor for my application.
10 replies
RRCRat Rig Community [Unofficial]
•Created by SamC on 11/8/2023 in #ratos-support
Z-level adjustment
Hello everyone,
For a project I am working on, it is extremely important that the distance between my nozzle and the substrate I am printing on remains permanently the same (µm resolution sometimes). Live adjustments are not easy to implement within the standard set-up. I therefore wonder if I could integrate the stepper motors in addition to the regular control in a control circuit where I measure the distance between nozzle and substrate with a laser and make live adjustments by controlling these motors. All this without affecting the standard set-up.
1 replies
