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https://github.com/jandelgado/geeetech-i3-a-pro
My Geeetech I3 Pro Alu 3D-Printer log and firmware repository
https://github.com/jandelgado/geeetech-i3-a-pro
3d-printing geeetech marlin marlin-firmware platformio
Last synced: 23 days ago
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My Geeetech I3 Pro Alu 3D-Printer log and firmware repository
- Host: GitHub
- URL: https://github.com/jandelgado/geeetech-i3-a-pro
- Owner: jandelgado
- Created: 2020-06-18T20:16:16.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2020-06-25T22:03:55.000Z (over 4 years ago)
- Last Synced: 2024-11-17T05:37:12.130Z (3 months ago)
- Topics: 3d-printing, geeetech, marlin, marlin-firmware, platformio
- Language: C
- Homepage:
- Size: 13.7 MB
- Stars: 3
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Geeetech I3 Pro Alu (2018)
Some notes on my [Geeetech I3 Pro Alu 3D-Printer](https://www.geeetech.com/wiki/index.php/Prusa_I3_A_pro_3D_Printer) as well as a
pre-configured Marlin firmware and a [simple dockerized firmware builder](firmware/README.md).
* [Assembly](#assembly)
* [Send Gcode to the printer](#send-gcode-to-the-printer)
* [PID tuning](#pid-tuning)
* [Custom Marlin Firmware](#custom-marlin-firmware)
* [Modifications](#modifications)
* [Nozzle cooler (for original MK8 extruder)](#nozzle-cooler-for-original-mk8-extruder)
* [Z-axis anti wobble](#z-axis-anti-wobble)
* [Base clamps](#base-clamps)
* [E3Dv6 and bowden extruder upgrade](#e3dv6-and-bowden-extruder-upgrade)
* [Extruder assembly](#extruder-assembly)
* [Extruder mount](#extruder-mount)
* [Mount for E3Dv6 and new X-Carriage](#mount-for-e3dv6-and-new-x-carriage)
* [Nozzle cooling fan](#nozzle-cooling-fan)
* [Cura settings for the E3Dv6 setup](#cura-settings-for-the-e3dv6-setup)
* [Filament spool roller](#filament-spool-roller)
* [Evolution of calibration cubes](#evolution-of-calibration-cubes)
* [What's next?](#whats-next)
* [Useful links](#useful-links)
* [Author](#author)
* [License](#license)
## Assembly
* some parts where not manfuctured very accurate (e.g. the holes in the x-axis
idle ends), so I had to use a rasp to make the smooth rods fit.
* I had problems with the Z-axis (Z-axis often got stuck) until I mounted the
Z-Axis nuts as shown here:
## Send Gcode to the printer
Use a terminal like e.g. `picocom` to send gcode commands directly to the printer:
```sh
$ picocom --imap lfcrlf -c -b 250000 /dev/ttyUSB0
G28
```
End picocom with `CTRL+A` `CTRL+Q`.
Alternatively run `make terminal` if using the [firmware builder](firmware/README.md).
### PID tuning
TODO
## Custom Marlin Firmware
The printer is controlled by the so-called "3-in-one" printer box, which hosts a
[GT2560](http://www.geeetech.com/wiki/index.php/GT2560).
I updated the firmware to [marlin](https://marlinfw.org/) v1.1.9 with [manual bed levelling](https://marlinfw.org/docs/gcode/G029-mbl.html) enabled.
The [firmware](firmware) directory contains my marlin configurations as well as
infos on how to use my self-contained dockerized firmware builder.
## Modifications
Log of the modifications I did over the time, in chronological order.
### Nozzle cooler (for original MK8 extruder)
After getting the printer up and running, this was the first upgrade I printed,
which improved overall printing quality. It's also possible to add a distance
sensor, which I obviously not yet have added. Since I use the [manual bed
levelling feature of Marlin](https://marlinfw.org/docs/gcode/G029-mbl.html),
levelling became very easy, so that an auto levelling sensor has no priority
for me at the moment.
* Model: https://www.thingiverse.com/thing:1540434
### Z-axis anti wobble
Printed, but not yet installed.
* Model: http://www.thingiverse.com/thing:1424358
* See it in action: https://www.youtube.com/watch?v=mYswkbC_AX0
### Base clamps
The base clamps stabilize the printer on the the board.
* Model: https://www.thingiverse.com/thing:1502838
### E3Dv6 and bowden extruder upgrade
In June 2020 I modified the 3d-printer to use a E3Dv6 hotend and a bowden
extruder.
#### Extruder assembly
I again changed the extruder (22.06.2020) to this Redrex model. This time, it
came with proper instructions and is overall of better quality than the old one.
#### Extruder mount
I used this mount to attach the bowden extruder to the aluminium frame of the
I3A Pro: https://www.thingiverse.com/thing:3513863
I attached the mount to the left side of the printer.
#### Mount for E3Dv6 and new X-Carriage
To mount the E3Dv6 I used this mount with integrated cooling:
* https://www.thingiverse.com/thing:1632847
and this X-Carriage:
* https://www.thingiverse.com/thing:2514659
The X-Carriage uses M3 screws while the E3Dv6 mount uses M4 screws, I ended
up enlarging the drill holes of the X-Carriage to M4 size. I also needed to extend the
Z-Axis end switch screw, which originally was to short for use with the new X-Carriage.
#### Nozzle cooling fan
The new fan and duct used (https://www.thingiverse.com/thing:1632847) are so
effective, that at 100% fan power, I always got "E1 Thermal runaway" errors.
By limiting the fan power to 50% (in Cura) everything was fine.
The fan is connected to the `PWM FAN` connector (upper two pins).
The fan can be tested using gcode commands:
* Turn nozzle fan (`P0`) off: `M106 P0 S0`
* Set nozzle fan to 50%: `M106 P0 S128`
#### Cura settings for the E3Dv6 setup
* Max fan speed 50%
### Filament spool roller
I replaced the original filament spool by this one: https://www.thingiverse.com/thing:2185015
Let's see how it works (25.06.2020)
## Evolution of calibration cubes
Testcubes printed in chronological order 1..6..10, A..C etc. Unfortunately I lost some of my
notes which documented the printer settings used :-(
* `1` - my first "successful" 3d-print
* `A` - after switch to Marlin 1.1.9, 210° / 50°
* `B` - 210° / 50° - last print with original MK8 hotend
* `C` - 210° / 50° - first print with E3Dv6 bowden setup. Significant improvements in the details
and reduced ghosting.
## What's next?
* auto bed levelling
* install Z-axis anti-wobble
* test different printing beds (e.g. glass)
* test marlin 2.0 firmware
## Useful links
* Firmware official: http://www.geeetech.com/forum/viewtopic.php?f=10&t=17046
* i3a Pro community provided firmware: http://www.geeetech.com/forum/viewtopic.php?f=80&t=62050
## Author
(c) 2020 by Jan Delgado
## License
MIT