Model by wayneclarke, structure paint is cement look from Havo Holland.
There’s a gargoyle sitting on our house.
Category Archives: 3dprinting
Software i use(d)
My much used set of tools (old draft I edited)
File managers
- Midnight Commander
- Thunar
- Nautilus
- nnn
- Dolphin
Generic tools
- rsync
- dcfldd – an enhanced version of dd
- screen/tmux
- fdupes
- ghex / xxd
Connecting/networking tools
- mosh – roaming, faster, using ssh
- sshfs – mount remote filesystems over ssh (see ssh tricks)
- wavemon – wifi info
- GNS3 – Graphical Network Simulator-3
- Wireshark
- PHPIpam
- Homelable
Encryption
- Luks
- ecryptfs
Graphical/Photo
- Gimp
- Eog
- rawtherapee
- Inkscape
- Darktable
- PureRef
- digiKam
- Krita
- Hugin
- ImageMagick
Documents/Notekeeping
- Vim
- Joplin
- Paperless-ngx
- DrawIO – For network drawings
- LibreOffice/OnlyOffice -> EuroOffice
- Scribus
3D Print/Lasercutting
- Cura
- Orcaslicer
- Bambuddy
- LightBurn
- Model editors: Blender and OpenScad, Meshroom, Sketchup
Coding
- Mostly CLI
- PlatformIO
- Arduino IDE
- VSCodium (stripped Visual Studio)
Electronics
- Fritzing
- Kicad
- Logic
Ebook / Comic readers
- Calibre
- FBReader
GFX/Video
- Blender
- kdenlive
- OBS Studio
- Shotwell
- Handbrake
- ffmpeg
- VLC
- Kodi/Libreelec
Music
- CLI abc tools
- Musescore
- Bagpipe Music Player
- Audacity (after removing all bad things be-ing added in 2021)
- LMMS
- Ardour
Virtualisation/Emulation
- proxmox
- libvirt
- ovirt
- guestfish
- dosbox
- pcem
- Martypc
Password management
- Keepass / KeepassXC
API
- Postman
- Flask (Python) see ledserver
Beamer
- Mapmap
- LPMT
- Qprompt
Brewing
- Brouwhulp
- Brewfather (web)
Web/App alternatives for bad companies (Mostly own hosted)
- Gmail – Hosted elsewhere – Thunderbird + web
- Google Drive – Nextcloud
- Spotify – Navidrome
- Google Photos (I never used this, i used Gallery2/3/Wipigo ) – Immich
- Youtube – Jellyfin for own movies
- Whatsapp/Google Chat – My own mattermost server, signal and IRC
- Teams – Ownhosted jitsi
- Teamviewer – Rustdesk
- Google Timeline – Dawarich
Server generic
- Databases : mariadb/mongodb/influxdb/sqlite
- Grafana
- NodeRed
- gitea
- HomeAssistant
- Bookstack
- Librenms
- Check_mk (i’ve started with Netsaint (1999), Nagios,Icinga,
- Mosquitto
Unsorted stuff
- vimperator (old)
- links/curl/dsniff/urlsnarf
- Databases (mariadb/mongodb/influxdb/sqlite)
- Metabase
- Adminder
- Scrot (snapshot tool)
- Luminace-hdr
- GDlib
- Dia (old)
- Blackmagic Fusion
- gcalcli
- Gcalcron
- Domoticz
- MQTT-Explorer
- Android studio
- Nextion IDE
- Irssi
- Mutt
- Mailcow
- Tinymediamanager
- Cacti (old)
- Winbox (Mikrotik)
- iptraf
- ntopng
- Twiki/Foswiki (old)
- Digikam
- My own photo manager
- Cewe Photobooks
- qdlsrdashboard
- gphoto2
- Ktechlab
- Ardour5
- Puredata
- Cadence
- Natron
- yt-downloader
- 4k downloader
- Taggers
- Mp3tag
- Tinymediamanager
- MusicBrainz Picard
- Beets
- Music players
- MOC
- SoftSqueeze
- Clementine
- My Badly Designed Sound Machine
- Server stuff
- Namazu2
- Netdata
- Ntopng
- Snort/Snortsam
- Virtualisation
Window managers (See other post)
- Xmonad (current)
- Gnome (current)
- Enlightenment (old)
- Compiz (old)
- Fluxbox (old)
- Ratpoison (tried)
- Twm (tried)
- Xfce (old)
- Window Maker(old)
- Sawfish (old)
- Kde (old)
- i3 (old)
- IceWM (old)
- Motif (old)
- Flwm (old)
- Fvwm (old)
- Ximian desktop (bought) (old)
- Home Drawing
- Sweethome3D
- Blender
- Sketchup
- Drawio
- Old but cool
- Mainactor
- Appleshake
- Zbruch
- Povray
- Lightzone
Other tools:
Git, tig, xdotool, nmon, ntop, iotop, etc etc (lijstje genereren)
DIY VR using two cameras on a Raspberry 5
Above a screenshot of a browser screen (Left and Right in fullscreen)
Colors are a little of (codec Red/Blue problem?)
But the setup works!
I used a android phone in above setup.
I tried a Quest 2 VR set, but I couldn’t get the browser in full screen mode. (YET)
Hardware setup
Two Raspberry Pi Camera Modules, connected via the two 4lane-MIPI DSI/CSI connectors.
Manually focussed and using some 3D printed stands on a piece of wood will do for now.
I build a RTSP NGinx proxy to test, which I previously used for OBS. But there was too much latency.
So I used below webrtc setup, with a latency below 80ms.
(I previously did some test using Janus)
CODE:
wget https://github.com/bluenviron/mediamtx/releases/download/v1.16.1/mediamtx_v1.16.1_linux_arm64.tar.gz tar xzvf media* cp mediamtx.yml mediamtx.org
NEW mediamtx.yml
webrtc: yes
webrtcAddress: :8889
rtmp: yes
rtmpAddress: :1935
paths:
dualcam:
source: publisher
run it
./mediamtx mediamtx.yml
Next make a streamer.
This Python script takes two square camera inputs, merge them side-by-side to one image and pushed the H264 frame to MediaMTX
import numpy as np
from picamera2 import Picamera2
import subprocess
import time
#WIDTH = 1280
WIDTH = 720
HEIGHT = 720
FPS = 30
BITRATE = "2500k"
RTMP_URL = "rtmp://127.0.0.1:1935/dualcam" # MediaMTX RTMP
# FFmpeg raw frames / H.264
ffmpeg_cmd = [
"ffmpeg",
"-y",
"-f", "rawvideo",
"-pix_fmt", "bgr24",
"-s", f"{WIDTH*2}x{HEIGHT}",
"-r", str(FPS),
"-i", "-",
"-c:v", "libx264",
"-preset", "ultrafast",
"-tune", "zerolatency",
"-b:v", BITRATE,
"-g", str(FPS), # keyframe every second
"-x264-params", "keyint=30:min-keyint=30:no-scenecut=1",
"-pix_fmt", "yuv420p",
"-f", "flv",
RTMP_URL
]
ffmpeg = subprocess.Popen(ffmpeg_cmd, stdin=subprocess.PIPE, bufsize=0)
picam0 = Picamera2(0)
picam1 = Picamera2(1)
cfg0 = picam0.create_video_configuration(
main={"size": (WIDTH, HEIGHT), "format": "BGR888"}, controls={"FrameRate": FPS}
)
cfg1 = picam1.create_video_configuration(
main={"size": (WIDTH, HEIGHT), "format": "BGR888"}, controls={"FrameRate": FPS}
)
picam0.configure(cfg0)
picam1.configure(cfg1)
picam0.start()
picam1.start()
print("Streaming to MediaMTX via RTMP...")
try:
while True:
f0 = picam1.capture_array()
f1 = picam0.capture_array()
combined = np.hstack((f0, f1))
ffmpeg.stdin.write(combined.tobytes())
time.sleep(1/FPS)
except KeyboardInterrupt:
print("Stopping...")
finally:
picam0.stop()
picam1.stop()
ffmpeg.stdin.close()
ffmpeg.wait()
Open using http://REMOTEIP:8889/dualcam
Bat detector
I’ve got a DIY Bat detector, today I designed and printed a Case for this PCB.
Below a link to the design files
https://media.henriaanstoot.nl/bat-case.zip
Next todo:
- Weatherproof case
- Alternative power
- Audio Jack
- Remote access with remote sound
Working on a (C64) handheld probe oscilloscope
These will be available in my shop.
Probably a webpage with measured examples are usefull.
Handheld device to measure voltages and make screenshots using an application.
Control over serial
- Select USB device to connect
- Start a capture to screen
- Clear (redraw probe screen)
- Rotate screen for left/right-handed people and easy reading
- Sample time speed in microseconds
- 5V reading but 15 volt tolerant, due to the SID pins
- ??? love to hear ideas
I’m currently working on streaming output.
Below, an example of screenshotting.
Below, measuring outputs from a NE555 (dutch comments)
LED String with 1D game
I saw a game like this on the WHY2025, I wanted my own version.
Using Twang32, some other hardware and a tweaked sketch, I got this.
Up = move up
Down = move down
whack the stick to kill red leds (Metal part is a door spring)
(Tilting joystick also works as up/down)
Things changed:
- Other hardware: MPU6050 for movement detection, Sound generation
No clock on my LedString - Changed sketch, fastled, pins and libraries
- Using IDE in 2025? .. downgrade ESP32 (expressive) to 2.0.11, and download Fastled to 3.9.0
2025 libraries won’t work!
WHY2025
In case of doubt .. MORE LEDS!
We went to WHY2025 a hackers camp in the Netherlands.
The first time I went was in 1997, with Bigred.
Many followed after that.
Tyrone, Bigred were also there from our old Crew.
Coline joined me several times since 2005.
I joined the Badge team, and was making spacers for the Badges in bulk using my 3D printer.
Also made some fancy cases.
In case of doubt .. more leds!
Nice weather, good friends. New friends. Booze. Food and Hacking.
We visited a lot of talks and enjoyed the music. (And fire)
I worked on: RSS feed on a epaper display, Midi monitor and the MQTT Pong website.
While waiting in line for the Badge:
A stone was passed from behind!
It was a ping request. We passed it forward, and 15 minutes later a TTL time exceeded stone came from the front of the line.
You gotta love those nerds!
The Badge:
This should have got much potential ..
Many misses, much to learn.
Sadly broken:
Our 7M Led string attached to Bigred’s Antenna.
Working on a Bluetooth beacon game for a friend.
Got some bluetooth beacons in the mail.
The plan is to hide these in the woods, and children have to find them using a scanner device.
Using a ESP32 with bluetooth, using RSSI (strength of signal) I can limit the range of detection.
The order of finding the tags is important, so a hidden tag should not be found when another should be found first.
These tags, hidden in toys, should be placed in a treasure chest.
(In order)
Then lights and sounds should hint the kids that they have successfully completed the mission.
So same detecting but even shorter range ESP is hidden in the Chest.
Some leds or a single blinking one should give hints about the distance of the object.
=== Matching iTags ===
MAC: 5b:08:10:4d:2a:01 | RSSI: -47
MAC: 5b:45:aa:0d:f7:9c | RSSI: -31 #### NEAR
MAC: 5b:88:fc:fc:e8:a9 | RSSI: -94 #### FAR AWAY
MAC: 5b:8b:00:00:1d:40 | RSSI: -66 Some test code:
#include <BLEDevice.h>
#include <BLEUtils.h>
#include <BLEScan.h>
#include <BLEAdvertisedDevice.h>
int scanTime = 5; // seconds
BLEScan* pBLEScan;
void setup() {
Serial.begin(115200);
Serial.println("Starting BLE scan...");
BLEDevice::init("");
pBLEScan = BLEDevice::getScan();
pBLEScan->setActiveScan(true);
pBLEScan->setInterval(100);
pBLEScan->setWindow(99);
}
void loop() {
BLEScanResults results = *pBLEScan->start(scanTime, false);
Serial.println("=== Matching iTags ===");
for (int i = 0; i < results.getCount(); i++) {
BLEAdvertisedDevice device = results.getDevice(i);
String mac = device.getAddress().toString();
if (mac.startsWith("5b:")) {
Serial.print("MAC: ");
Serial.print(mac);
Serial.print(" | RSSI: ");
Serial.println(device.getRSSI());
}
}
Serial.println("======================");
pBLEScan->clearResults();
delay(2000);
}
Animatronics again
I like animatronics.
In the past, I made animatronics using :
Windscreen wipers, Servo controllers and stepper motors.
I bought a new controller with an 8 channel receiver. Now I can manually control and test setups.
I altered and 3D printed this model from Will Cogley
Now I have to make this more programmable, python on a RPi should do it.
Planning to use a 360 degrees lidar, so the eyes can follow you around.
I got some other new stuff in also:
Some 360 degrees servo’s and a mini led strip which a connected to a WLED with digital I2S microphone.
Busy .. work and play
While working on my clients projects, I’ve been busy with other Fun stuff.
All will be posted more about soon
- Designing 3D models for printing
- Testing Arduino Code for RS485!
- Creating T-shirt prints using 3D printing and bleach/paint with Vincent !
- Transforming my Lab
- Testing UM25C logging possibilities
- Testing queries on overpass-turbo.eu (So much fun)
- Playing chiptune music using Synthcart + Midi
- Made V2 displayer on my 64×64 HUB75 led display
- Bought a directional Wi-Fi antenna, tweaking wireshark to pinpoint rogue access points and clients.