Last Updated or created 2022-04-01
Using OBS and chromakey (greenscreen)
Monthly Archives: March 2020
3D Printing
Last Updated or created 2023-08-03
In 2012 I started with 3D printing, I didn’t have my own yet. So it was done using shapeways.
April 2019 I ordered my own, a Creality CR-10S.
Specs
- Build Volume: 300 x 300 x 400mm
- Layer Thickness: 0.1-0.4mm
- Positioning Precision: Z-axis – 0.0025mm, X & Y-axis – 0.015mm
- Nozzle Temperature: 250°C
- Printing Speed: 200mm/s
- Filament Diameter: 1.75mm
- Printer Weight: 9kg
- Printing Filament: PLA, ABS, TPU, Wood, Carbon fiber, etc.
- Input Support: SD card/USB
- File Types: STL/OBJ/G-Code/JPG
- Supports(OS): Windows/Linux/Mac/XP
- Printing Software: Cura/Repetier-Host
- Frame & Body: Imported V-Slot Aluminum Bearings
- Power Requirement Input: AC110V~220V, Output: 12V, Power 270W
- Output: DC12V, 10A 100~120W (Support storage battery)
- Working Condition Temp:10-30°C, Humidity: 20-50%
Problem with this 3D Printer is the lack of a thermal runaway detection. My solution is a MQTT/Nodered warning system which plays an alarm and uses a shelly to disconnect the power.
https://www.henriaanstoot.nl/2022/05/11/mqtt-bash-nodered-notify/
Software I Use – see other posts
- Openscad
- Cura
- Meshroom
- Blender
- Sketchup
Hardware
- Octoprint on a raspberry pi – (with Octoscreen)
- Octoprint monitor
I’m using a filament sensor like the one in below picture
It used to be a DIY thingy using an arduino. (below)
Filament under my table ( in the “dark” )
Software on my mobile
- Octoremote
https://play.google.com/store/apps/details?id=com.kabacon.octoremote
Hints and tips
- Use painters tape against bending of the glass, it will warp because of the heat.
- Use 3D spray to fix model to base-plate.
(I used a gluestick before) - Always think of model placement, less support the better.
- Try to remember which fill-in is the best for your purpose.
- Calibrate distance print tool and glass using printing paper.
- Know your printer, make a lot of test prints when starting.
- Learn / read about 3D printing finishing. Sanding/smoothing/melting.
I’ve got some smoothing liquid (print coating) , a dremel and below tool
- Use a print model to test your leveling
( https://www.printables.com/model/69956-bed-level-calibration-square-grid ) - Learn how gcode’s work!
Laser engraving using my 3D printer (pre lasercutter)
Websites
- Yeggi
- Thingiverse
- printables – not that much
UPDATE 20230803
Best gap filler i found which is easily sanded down with a dremel.
Alabastine Polyester Plamuur
DDC i2c monitor control
Last Updated or created 2023-02-15
I wanted to control the input of my monitors, these are my findings.
DDC – Display Data Channel
I2C – (Inter-Integrated Circuit, eye-squared-C), alternatively known as IIC, is a synchronous, multi-master/multi-slave (controller/target) bus
Getting monitor information with the ddccontrol -p command
##### PART OF THE OUTPUT ##### Detected monitors : - Device: dev:/dev/i2c-9 DDC/CI supported: Yes Monitor Name: VESA standard monitor Input type: Digital (Automatically selected) - Device: dev:/dev/i2c-7 DDC/CI supported: Yes Monitor Name: VESA standard monitor Input type: Digital - Device: dev:/dev/i2c-6 DDC/CI supported: Yes Monitor Name: VESA standard monitor Input type: Digital Reading EDID and initializing DDC/CI at bus dev:/dev/i2c-9... I/O warning : failed to load external entity "/usr/share/ddccontrol-db/monitor/AOC2490.xml"
Switching inputs
ddcutil -b 7 setvcp 0x60 0x11 # 7 is Second monitor (starts with 6), 0x60 is the input register (see below) and 0x11 is HDMI ddcutil -b 6 setvcp 0x60 0x0f # First monitor DP (Displaylink) alternative command ddccontrol -r 0x60 -w 15 dev:/dev/i2c-7
List the control registers
ddccontrol -d dev:/dev/i2c-6 ddccontrol version 0.6.0 Copyright 2004-2005 Oleg I. Vdovikin (oleg@cs.msu.su) Copyright 2004-2006 Nicolas Boichat (nicolas@boichat.ch) This program comes with ABSOLUTELY NO WARRANTY. You may redistribute copies of this program under the terms of the GNU General Public License. Reading EDID and initializing DDC/CI at bus dev:/dev/i2c-6... I/O warning : failed to load external entity "/usr/share/ddccontrol-db/monitor/AOC2490.xml" Document not parsed successfully. EDID readings: Plug and Play ID: AOC2490 [VESA standard monitor] Input type: Analog =============================== WARNING =============================== There is no support for your monitor in the database, but ddccontrol is using a basic generic profile. Many controls will not be supported, and some controls may not work as expected. Please update ddccontrol-db, or, if you are already using the latest version, please send the output of the following command to ddccontrol-users@lists.sourceforge.net: LANG= LC_ALL= ddccontrol -p -c -d Thank you. =============================== WARNING =============================== Controls (valid/current/max) [Description - Value name]: Control 0x02: +/1/2 C [New Control Value - No changes] Control 0x04: +/0/1 C [Restore Factory Defaults] Control 0x05: +/0/1 C [Restore Brightness and Contrast] Control 0x08: +/0/1 C [Restore Factory Default Color] Control 0x10: +/90/100 C [Brightness] Control 0x12: +/50/100 C [Contrast] Control 0x14: +/5/13 C [???] Control 0x16: +/50/100 C [Red maximum level] Control 0x18: +/50/100 C [Green maximum level] Control 0x1a: +/50/100 C [Blue maximum level] Control 0x60: +/772/4 C [Input Source Select (Main)] Control 0x62: +/17/100 C [Audio Speaker Volume Adjust] Control 0x6c: +/50/100 C [Red minimum level] Control 0x6e: +/50/100 C [Green minimum level] Control 0x70: +/50/100 C [Blue minimum level] Control 0xac: +/6750/65535 [???] Control 0xae: +/6000/65535 [???] Control 0xb2: +/1/8 [???] Control 0xb6: +/3/8 C [???] Control 0xc8: +/5/65302 C [???] Control 0xc9: +/8/65535 C [???] Control 0xcc: +/4/255 [???] Control 0xd6: +/1/4 C [DPMS Control - On] Control 0xdf: +/513/65535 C [???] Control 0xfe: +/4/255 [???]
Setting volume (reg 0x62) of monitor 2
ddcutil -b 7 setvcp 0x62 0x01
AOC monitor PROBLEM
You can’t switch from an input which is not active!
So my workstation is connected via DP, and i can switch to HDMI.
Now i HAVE TO use the hdmi to switch back to DP.
A solution could be to ssh into the machine connected with HDMI (passwordless login) and switch back to DP.
I made a mqtt button sending a topic that was read by the two machines using the mqtt python program elsewhere on this site.
(Rotary Mqtt Volume control)
gddccontrol
