A fresh start
Category Archives: Computer
Add packages to a pre-existing docker image
A little test building a custom docker image, for a friend.
Q: I have a Node-red docker, but without ffmpeg binary
Using below code, i’ve added a overlay with ffmpeg.
Podman command’s should be working for docker command also.
(Note: When adding multiple packages OR other commands, try to use a single commandline, Every RUN command adds a overlay.
mkdir noderedbuild
cd noderedbuild
vi DockerfileFROM nodered/node-red
LABEL description="Custom Nodered Build"
MAINTAINER haanstoot <fash@fash.nu>
USER root
RUN apk add --no-cache ffmpeg
EXPOSE 1880Below builds a local image named nodered:v1
NOTE: docker run command may be incomplete for Node-Red, this was just a example to add packages
podman build -t nodered:v1 .
podman images
docker run -it -p 1880:1880 -v node_red_data:/data --name mynodered localhost/nodered:v1 -dTested with
[root@podman ~]# podman exec -it mynodered /bin/bash
bash-5.0# ffmpeg
ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developersUsage:
https://flows.nodered.org/flow/127b038961f873d1babeecaf5578959e
LS120 app android
May 2020 i’ve bought a Youless LS120, to monitor my electricity and gas, today i found out there is a android app .. Duh 🙂
Audio switcher
Doing my work from home via Jitsi (Jabra headset) and Listening to music on my speakers. Sometimes i want to switch output. For example spotify on my headset.
Using below code, i can easily switch between output sinks.
#!/bin/bash
if [ -z "$1" ]; then
echo "DEVICE"
pactl list sinks | egrep "^Sink|Description" | sed 'N;s/\n/,/' |sed -e 's/\t/ /g' | cut -f2,5- -d" "
echo "APPLICATIONS"
pactl list sink-inputs | egrep -ie "^Sink|application.name" | grep -v "\-application-name" | sed 'N;s/\n/,/' | sed -e 's/\t/ /g' | sed -e 's/ / /g' | cut -f3,6- -d" "
echo "Usage: $0 APPID DEVICEID" >&2
exit 1
fi
pactl move-sink-input $1 $2It shows output devices, and applications which are using audio sinks.
Just match them up.
OldSkool Computer Cartridges/expansions/add-ons
(Todo : add photos/designs )
Amiga:
| Action Replay II | Owned since … 80s 90s? Modded this one, as part of my modular amiga system where i wanted to remake every part onto 10×15 euro prints. So i could swap things out for other boards. |
| Memory expansion | 512k .. missing in action Go a new one in … ? |
| Boot selector | Swaps df0 and df1 DIY version was a wirewrap ic socket with a cross switch, now i have a Gotek buffered switching module with can be actvated with a keystroke. (Gotek post) |
| Keyboard mod | Hidden key (in the space of the stands, which triggered a extra key stroke) |
| Kickstart selector | A print you can insert in the ROM socket of your amiga. Had only 1.2 and 1.3. Now there are many .. like diagnostic roms. I made a altered 1.2 version .. which was unusable .. i f*cked it up |
| SID mod | Added a sid parallel on the 8020 CIA chip |
| Gotek driver emulator | I made a arduino version to read disks. (Other post) But this is a disk image drive emulator. See Gotek post |
| Boot sector warn | Piezo beeper which warned me when a boot sector was being written (virus alert) |
| Sound filter fix | Amiga audio filter enhancer, using capacitors and resistors |
C64:
| Final Cartridge III | |
| Led mod | Memory activation leds |
| KCS Power Cartridge | Sepp’s old cartridge? |
| Rom selector | DIY rom selector |
| Data Manager 2 | Can’t find anything on this one on other sites !?!?! https://www.henriaanstoot.nl/2022/07/17/mystery-cartridge-c64/ |
Atari:
Vic-20:
| Reset mod | DIY reset mod |
| ROM selector | DIY ROM selector |
| Many cartridges | Sold in 2022, kept only some useful once’s |
PC:
| PC speaker mod | Speaker to audio jack |
| Seek time monitor | When a seek took too long, LEDs would light up, time to defrag! |
| Covox mod | A pre sound card parallel to audio resistor bridge. Only a few demo’s and games supported this mod. |
| VGA to scart | Display hack |
Monitor:
| Monitor mod | DIY horizontal flip using relays |
| Color mod | Greyscale / RGB switcher |
Generic:
| Joystick recorder | recorded movements when playing a game, so it could replay parts. |
IPA Certificates
MQTT Keyboard
A fancy keyboard….. At last a clickety keyboard. A Razer Blackwidow V3 mechanical keyboard. I’m not a gamer, but i like the clickety sounds. RGB leds are always nice to play with.
One of the nice things about razer is the Linux support!
Some nice links:
https://github.com/openrazer/openrazer
Even several python scripts can be found, but no MQTT.
So made a fast ‘n simple hack to control my keyboard with mqtt/nodered.
When someone is at the frontdoor, my keyboard changes from white to red.
Below a node-red example
My python code:
import paho.mqtt.client as mqttClient
import time
import os
import subprocess
import json
def on_connect(client, userdata, flags, rc):
if rc == 0:
print("Connected to broker")
global Connected
Connected =True
else:
print("Connection failed")
def on_message(client, userdata, message):
subprocess.Popen(["razer-cli", "-c", message.payload])
Connected = False
broker_address = "your.mqtt.brokerip.here"
port = 1883
#user = "user"
#password = "password"
client = mqttClient.Client("mqttrazer")
#client.username_pw_set(user, password=password)
client.on_connect = on_connect
client.on_message = on_message
client.connect(broker_address, port=port)
client.loop_start()
while Connected != True:
time.sleep(0.1)
client.subscribe('razer/in')
try:
while True:
time.sleep(1)
except KeyboardInterrupt:
print ("exiting")
client.disconnect()
client.loop_stop()
Checking SFP connections with phone
Testing my 10gbps fiber
If your mobile doesn’t have a filter, you should be able to see fiber connections using camera.
Concertina and Augmented reality
One of the first attempts to do some augmented reality.
Tried to display note buttons realtime on a instrument.
I’m using a image on a screen due to the lighting, i was unable to test my real instrument with the light i had when testing.
Ipcam sphere panorama
I made a little script to make a 360 spherical panorama photo, using a remote controlled IP cam,
Looking at the API CGI, i only needed to control the movement of the camera and getting a snapshot.
- Point camera down
- Point camera maximal left
- Take picture
- Point a little to the right
- Take picture, loop until max right
- Point a little more up and go max left
- Doing same loop as above, until pointing maximal up
After getting all those pictures, i only needed to stitch them using Hugin.
When viewing the image with VR Glasses, i could look around my room, without image distortion, like below flattend example.
The ipcam generates a token, which you have to use in your curl commands.
TOKEN PART
token=$( curl -s -d '[{"cmd":"Login","action":0,"param":{"rs": "abcd", "User":{"userName":"admin","password":"SECRETPASSWORD"}}}]' "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=Login&token=null" -H 'Content-Type: application/json' | grep name | cut -f4 -d\" )GETTING A IMAGE FROM IPCAM
wget "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=Snap&channel=0&rs=123asd&user=admin&password=SECRETPASSWORD" -O output.jpgCONTROLLING MOVEMENT
curl -X POST -d '[{"cmd":"PtzCtrl","action":0,"param":{"rs": "abcd", "channel":0,"op":"Left","speed":1,"id":1}}]' "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=PtzCtrl&token=$token"COMPLETE SCRIPT
#!/bin/bash
token=$( curl -s -d '[{"cmd":"Login","action":0,"param":{"rs": "abcd", "User":{"userName":"admin","password":"SECRETPASSWORD"}}}]' "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=Login&token=null" -H 'Content-Type: application/json' | grep name | cut -f4 -d\" )
echo $token
if [ $2 == "max" ]; then
curl -X POST -d '[{"cmd":"PtzCtrl","action":0,"param":{"rs": "abcd", "channel":0,"op":"'$1'","speed":1,"id":1}}]' "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=PtzCtrl&token=$token"
exit 0
fi
for x in $(seq -w 1 25) ; do
for y in $(seq -w 1 12) ; do
wget "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=Snap&channel=0&rs=123asd&user=admin&password=SECRETPASSWORD" -O ${x}${y}.jpg
curl -X POST -d '[{"cmd":"PtzCtrl","action":0,"param":{"rs": "abcd", "channel":0,"op":"Right","speed":1,"id":1}}]' "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=PtzCtrl&token=$token"
sleep 0.5
curl -X POST -d '[{"cmd":"PtzCtrl","action":0,"param":{"rs": "abcd", "channel":0,"op":"Stop","speed":1,"id":1}}]' "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=PtzCtrl&token=$token"
sleep 5
done
curl -X POST -d '[{"cmd":"PtzCtrl","action":0,"param":{"rs": "abcd", "channel":0,"op":"Left","speed":1,"id":1}}]' "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=PtzCtrl&token=$token"
sleep 30
curl -X POST -d '[{"cmd":"PtzCtrl","action":0,"param":{"rs": "abcd", "channel":0,"op":"Stop","speed":1,"id":1}}]' "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=PtzCtrl&token=$token"
sleep 1
curl -X POST -d '[{"cmd":"PtzCtrl","action":0,"param":{"rs": "abcd", "channel":0,"op":"Up","speed":1,"id":1}}]' "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=PtzCtrl&token=$token"
sleep 0.5
curl -X POST -d '[{"cmd":"PtzCtrl","action":0,"param":{"rs": "abcd", "channel":0,"op":"Stop","speed":1,"id":1}}]' "http://camera.ip.number.here/cgi-bin/api.cgi?cmd=PtzCtrl&token=$token"
sleep 5
done
