Category Archives: 3dprinting

3dprinting, Computer, IOT / Domoticz

Divers …

Leave a comment

Running into some Ubuntu machines with keyboard mouse problems after upgrading to 24.04

fix:

apt get install xserver-xorg-input-synaptics
apt get install xserver-xorg-input-all

3D printing some test models generated with AI from a photo to make some boardgame pieces.

Meanwhile, I am testing big motor controllers for a new client.

Last week I was at a friend’s place, time to make a launcher creator in bash

#!/bin/bash
#
if [ $# -lt 2 ]; then
	echo "createlauncher.sh name (path/bin) path/name"
    exit 1
fi


cat << EOF > /tmp/$1
[Desktop Entry]
Type=Application
Terminal=false
Name=$1
Icon=~/bin/icon/$1.png
Exec=$2 $3
EOF

cp /tmp/$1  ~/.local/share/applications/$1.desktop
update-desktop-database

Made a cable holder in my lab (Already modded)
Can be folded upwards.

Folded
Pulled down

Did a lot of work in my new lab/workshop.

Got some cool new tools in. Post later

Also working on a new arrangement for a bagpipe tune.

3dprinting, Computer

Mega PC tower and Book

Leave a comment

I’ve printed two books using the Lulu service. (One for Tyrone)
When they arrived, I noticed some faults.
Lucky Lulu will be printing them again for me.

The book has over 500 pages and has a nice hardcover.

And I’ve been busy building a Mega Tower with 4 Motherboards.
This will have a superb processing power! .. not.
It houses some old motherboards for hardcore machine coding on real old hardware.

From top to bottom: 8088, 8086, 80386, 80484

Todo:

  • Rework on the cables
  • 3D print an information plaque on the front of each board
  • Add a control panel on each board
  • Maybe some dust cover would be nice

I can remove the boards, and place them on a table.
I’ve made some custom feet for them. Twist and lock by my own design.

Padded feet

The openscad files:

The locking is done by making the cylinder slightly oval by 0.5mm

difference(){
	difference(){
		difference(){
			difference(){
				rotate([90,30,0])
				cylinder(r=30, h=10, $fn=3);
				translate([-20,-20,0])
				cube([40,40,40]);
				}
			rotate([90,0,0])
			translate([0,0,-10])
			cylinder(r=5, h=30, $fn=200);
			translate([0,-5,-10])
			cylinder(r=7, h=30, $fn=200);
			}
		translate([18,-5,-12])
		cylinder(r=4, h=30, $fn=200);
		translate([18,-5,-22])
		cylinder(r=2.2, h=30, $fn=200);
		translate([-18,-5,-12])
		cylinder(r=4, h=30, $fn=200);

		translate([-18,-5,-22])
		cylinder(r=2.2, h=30, $fn=200);
		}
	translate([9,-20,-20])
	cube([40,40,40]);
}

Note the resize for the oval effect

resize([14,14.5,10])
cylinder(r=7, h=10, $fn=200);
translate([0,0,0])
cylinder(r=9, h=3, $fn=200);

When designing above, I also made new knobs for our stove.
Using the white dot, you can see which burner has which knob.

3dprinting

Started using FreeCad

Leave a comment

FreeCAD is an open-source parametric 3D modeller made primarily to design real-life objects of any size. Parametric modelling allows you to easily modify your design by going back into your model history and changing its parameters.

Designed a case for a measure tool, I’ve printed a case for a while ago.

What are my thoughts : I like it, I like the setup, workbench and the fact that you can edit every step again.

Measure diameter case using 3D printed tool

Draw case using FreeCAD

A 3D CAD mouse helps!

Uncleanable 2nd hand controller
3DMouse and blender

Below, a technical drawing exported to PDF using FreeCAD

bakje
Playing around with the 3D CAD Mouse

I forgot the holes for mounting, these I did using Bambu Studio.

3dprinting

3D print fun

Leave a comment
Multi Color !
New bottle clip, all made within bambu studio.

Resize, clone, negative boolean, selective cut, text surface, change modifier type.

Bambu studio:

I’ve made a script to view the camera using vlc. But it was much work.
Now I’ve installed the HACS Bambu integration in Home Assistant.
Much easier to get an image.

While Bambu studio is nice, I started using FreeCad.
I still use OpenScad and Blender, but I really try to use a CAD program for modeling 3D prints (technical prints). For sculpting I still use blender.

3dprinting

The lost art of 3D printing.

Leave a comment

Many people are into 3D printing, more than ever. So why do I say “the lost art”?

I started my 3D printing journey in 2012.
Not having my own 3D printer, I was using the shapeways service,

Using Sketch-up I drew my first printable objects. Upload model and get it by mail.

Welllll .. lets compare.
I’ve bought a bambu labs P1S recently.

  • Buy printer, unpack.
  • Connect to cloud.
  • Add filament and print model (after calibration process)

All fine and dandy, problems? Check YouTube for solutions.

What do you know about 3D printing?

People are forgetting about the knowledge to get at this point ..]…

How does it work, what is needed?

My first 3D printer.
Lets compare:

  • Get printer in parts
  • Assemble
  • Calibrate
  • Manual bed calibration (*)
    5 point calibration step by step, needs user input
  • Test print
  • Fail several times
  • Try different sticky methods
    (hairspray, double sided tape, gluestick)
  • Bed warping? Add tape to underside
  • Feed filament by cutting at 45 degree angle and manual feeding.
  • Load and unload using buttons and feeding until previous color flushed
  • Learn about Gcodes
  • color changing? split part and pause manually, switch manually.
  • out of filament, problem with printing? start the whole print again
  • no out of filament detector, no temperature failsave
  • Filament error? Start again or split gcode by hand and superglue parts
  • Clean plate, clean head
  • Manual change temperature of head and bed when problems arise
  • Using multiple software tools to design and slice
  • Put your gcode on a sdcard to print, or later via octoprint

Every next print start at calibrate in above list.

What did you learn?
How your machine works and reacts.
Fix extruding problems, temperature, filament wetness, starting layers.
Difference between PLA, PETG, ABS in great detail.
Learn to wait
Troubleshooting in general

Never forget where we came from!
40 years old, but getting available to the masses after 2000.

3dprinting, Computer

2D on a 3D printer, moving lab and designing

Leave a comment

Not a lot to tell, but much going on.

Having my own business means having a more professional electronics lab is a must.
So I’m moving from the attic to our outside workshop. That also means I have to make our Music Studio smaller.

So moving, printing a lot on my new 3D printer and designing EuroCards.

Part of the Address decoding eurocard with din41612.

Above card will hold two address decodes parts, selectable using jumpers. ( Old skool TTL using 74xx and a new solution using ATF22V10.

We like Low Poly models, so I printed one using marble PLA.

In the back my 100yr old highhat from my Grandfather (moleskin)

I’ve cleaned my old 3D printer, and I am planning to convert this printer to a 2D plotter and a CNC machine.

I’ve already printed a pen holder and a dremel holder.
(The filament head will be removed)

I’m working on a Gcode writer to plot drawings using a pen, or using a Gyro-cut knife to cut paper.
And the biggest project using this old 3D printer, a CNC machine!

Test Code:

import time
import serial

arduino = serial.Serial('/dev/ttyUSB0', 115200, timeout=.1)

# Motor stuff
arduino.write(str.encode("M84 X Y Z S12000\r\n"))
arduino.write(str.encode("M92 X160 Y160 Z800\r\n"))
# Extrude fix
arduino.write(str.encode("G92 E0\r\n"))
# Go home
arduino.write(str.encode("G28\r\n"))
# Move to x,y,z
arduino.write(str.encode("G1 Z90 X50 Y50\r\n"))
# Wait
arduino.write(str.encode("M400\r\n"))

Sin wave fun:

import time
import serial
import math
from time import sleep

arduino = serial.Serial('/dev/ttyUSB0', 115200, timeout=.1)

arduino.write(str.encode("M84 X Y Z S12000\r\n")) 
arduino.write(str.encode("M92 X160 Y160 Z800\r\n")) 
arduino.write(str.encode("G92 E0\r\n")) 
arduino.write(str.encode("G28\r\n")) 
arduino.write(str.encode("M220 S100\r\n")) 
arduino.write(str.encode("G1 Z10 X60 Y60\r\n"))
arduino.write(str.encode("M400\r\n"))
sleep(10)
count = 0
while True:
	newx=(math.sin(math.radians(count))*50)+60
	newy=(math.cos(math.radians(count))*50)+60
	newz=(math.cos(math.radians(count))*10)+20
	count = count + 1
	mystring="G1 Z" + str(newz) + " X" + str(newx) + " Y" + str(newy) + "\r\n" 
	print(mystring) 
	arduino.write(str.encode(mystring)) 
	arduino.write(str.encode("M400\r\n")) 
        # Not waiting for answer yet
	print(newx) 
	sleep(0.1)
X,Y and Z movement (4x speed)
3dprinting, Computer, Food, Music

Weekend work

Leave a comment

Weekend of music, BBQ, designing and more.

I was making a re-arrangement of a bagpipe tune. Designing a blender 3D printed light box. Cooking a Mexican BBQ dinner. Visiting a textile place with old and new weaving looms. (Which gave me some great ideas). And working on my 68000 computer.

A great weekend.

No embellishments yet, and no lights in de blender logo.

My little record player project is also in the picture, I need to re-print the parts using my new printer!

3dprinting, Computer

New old book and new 3D printer

Leave a comment

I bought a hardcopy of a book I used to design my 68000 computer.
In the US 130 dollars, in UK 8 pounds. (895 pages) (1992)

Search in pdf, flip through pages in hardcopy book!

New 3D printer

3D Printing
Old
New

1956 days ago I’ve bought my previous printer. Time for a new one.

This one is very good in quality prints, but it is scary cloud connected by default. (And Chinese company)
See stuff like

So, LAN mode only.
And firewalled to internet.

Lets look at the Linux Bambu Lab source!

## Interesting

src/slic3r/GUI/MediaPlayCtrl.cpp:            url = "bambu:///rtsps___" + m_lan_user + ":" + m_lan_passwd + "@" + m_lan_ip + "/streaming/live/1?proto=rtsps";
src/slic3r/GUI/MediaPlayCtrl.cpp:            url = "bambu:///rtsp___" + m_lan_user + ":" + m_lan_passwd + "@" + m_lan_ip + "/streaming/live/1?proto=rtsp";
src/slic3r/GUI/MediaPlayCtrl.cpp:            url = "bambu:///rtsps___" + m_lan_user + ":" + m_lan_passwd + "@" + m_lan_ip + "/streaming/live/1?proto=rtsps";
src/slic3r/GUI/MediaPlayCtrl.cpp:            url = "bambu:///rtsp___" + m_lan_user + ":" + m_lan_passwd + "@" + m_lan_ip + "/streaming/live/1?proto=rtsp";

src/slic3r/GUI/MediaFilePanel.cpp:        std::string url = "bambu:///local/" + m_lan_ip + ".?port=6000&user=" + m_lan_user + "&passwd=" + m_lan_passwd;

src/slic3r/GUI/MediaPlayCtrl.cpp:    m_lan_user = "bblp";
src/slic3r/GUI/MediaPlayCtrl.cpp:    m_lan_passwd = "bblp";

# Code
grep -iR code ~/.config/BambuStudio/*conf
     "user_access_code": {
     "01P00A4331XXXXX": "331XXXXX"

# NMAP 
Host is up (0.0084s latency).
Not shown: 998 closed ports
PORT     STATE SERVICE
990/tcp  open  ftps
6000/tcp open  X11