A few weeks ago i designed a print using Kicad.
Today they have arrived!
Now I have to wait a little more .. A 74HTC166 and a straightup RCA connector.
I the past, a long time ago i made my own single side pcb’s using acids.
A messy job, often gone wrong.
Old skool example https://www.youtube.com/watch?v=_PwCp3A3RSk
Or https://www.circuitsonline.net/artikelen/view/1/print
Getting 433Mhz dimmers working under HA is a pain in the *ss.
After moving my Rfxcom from domoticz to HA, there was still no good way to add dimmers.
I’ve tried adding switches and migrating them to lights, but it didn’t work.
So i took another approach.
Domoticz has a good 433 to mqtt plugin. So i used NodeRed to talk to HA and Domoticz via MQTT.
Domoticz
MQTT gateway setup
Home Assistant
/config/configuration.yaml
light:
- platform: mqtt
name: "KitchenOutside"
payload_on: "99"
payload_off: "0"
unique_id: "KitchenOutside"
brightness_scale: "99"
brightness_state_topic: ha433/kitchenoutside/brightcontrol
brightness_command_topic: ha433/kitchenoutside/brightcontrol
state_topic: ha433/kitchenoutside/brightcontrol
command_topic: ha433/kitchenoutside/control
optimistic: false
on_command_type: brightness
- platform: mqtt
name: "Living5Spots"
payload_on: "30"
payload_off: "0"
unique_id: "Living5Spots"
brightness_scale: "30"
brightness_state_topic: ha433/Living5Spots/brightcontrol
brightness_command_topic: ha433/Living5Spots/brightcontrol
state_topic: ha433/Living5Spots/brightcontrol
command_topic: ha433/Living5Spots/control
optimistic: false
on_command_type: brightness
Node Red
Flow
Node-RED Deploy
Search flows
Node
"d4aab6722750908c"
Type function
show more
Export nodes
Export
[
{
"id": "31dba0859e04acb4",
"type": "mqtt in",
"z": "a49c5bcd66c12a46",
"name": "",
"topic": "ha433/kitchenoutside/brightcontrol",
"qos": "2",
"datatype": "auto",
"broker": "8c74c5f6.9a7a48",
"nl": false,
"rap": true,
"rh": 0,
"inputs": 0,
"x": 330,
"y": 160,
"wires": [
[
"e2501f2b6e2ab43d"
]
]
},
{
"id": "e2501f2b6e2ab43d",
"type": "function",
"z": "a49c5bcd66c12a46",
"name": "Dimmer function",
"func": "var idx = 9735;\nvar bright = msg.payload;\nmsg.payload = {};\nmsg.payload = {\"command\": \"switchlight\", \"idx\": idx, \"switchcmd\": \"Set Level\", \"level\": bright};\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 690,
"y": 160,
"wires": [
[
"5f0314b0950d24c0"
]
]
},
{
"id": "5f0314b0950d24c0",
"type": "mqtt out",
"z": "a49c5bcd66c12a46",
"name": "",
"topic": "domoticz2/in",
"qos": "",
"retain": "",
"respTopic": "",
"contentType": "",
"userProps": "",
"correl": "",
"expiry": "",
"broker": "8c74c5f6.9a7a48",
"x": 970,
"y": 160,
"wires": []
},
{
"id": "95eb4d0ed97fdefb",
"type": "mqtt in",
"z": "a49c5bcd66c12a46",
"name": "",
"topic": "ha433/kitchenoutside/control",
"qos": "2",
"datatype": "auto",
"broker": "8c74c5f6.9a7a48",
"nl": false,
"rap": true,
"rh": 0,
"inputs": 0,
"x": 320,
"y": 220,
"wires": [
[
"d4aab6722750908c"
]
]
},
{
"id": "d4aab6722750908c",
"type": "function",
"z": "a49c5bcd66c12a46",
"name": "Off function",
"func": "var idx = 9735;\nvar bright = 0;\nmsg.payload = {};\nmsg.payload = {\"command\": \"switchlight\", \"idx\": idx, \"switchcmd\": \"Set Level\", \"level\": bright};\nreturn msg;",
"outputs": 1,
"noerr": 0,
"initialize": "",
"finalize": "",
"libs": [],
"x": 670,
"y": 220,
"wires": [
[
"5f0314b0950d24c0"
]
]
},
{
"id": "8c74c5f6.9a7a48",
"type": "mqtt-broker",
"name": "mqttserver",
"broker": "mqttserver",
"port": "1883",
"clientid": "",
"usetls": false,
"compatmode": true,
"keepalive": "15",
"cleansession": true,
"birthTopic": "",
"birthQos": "0",
"birthPayload": "",
"closeTopic": "",
"closePayload": "",
"willTopic": "",
"willQos": "0",
"willPayload": ""
}
]
So …. this works, and i have now a generic mqtt “router”
Update: Below works now
I use a bunch of different tools to create video’s or stream stuff.
Below is some info about those tools.
Software:
For OBS i made a shortcut/macro keyboard thingy. Based on an arduino pro mini. (Which can connect to a computer acting like a HID, for example a keyboard or mouse)
I use this one to emulate keystrokes which i’ve configured in OBS to do:
(Originally i planned to do this with a Nextion Display)
Sometimes a Nikon on a tripod is better.
I don’t have a dedicated webcam for my battlestation. So i mainly use a Actioncam (4k) which can be connected via USB. Or i use a Nikon together with the Camlink.
So i record using my mobile, webcam, screen record
Edit using Audacity and Kdenlive.
When recording with OBS i use MP4 as a container, this is a no-brainer to embed in websites. Use mkv when recording long shots, or when connections can break. (A mp4 will be corrupted)
ffmpeg -i streamrecord.mkv -codec copy putinmp4container.mp4
I’ve played around with StreamFX which gives you some nice extra tools.
(There are loads of plugins to download)
Using websockets is on my todolist.
StreamFX example
Working on a blender animation.
Realtime screen grab, which gets 3D placed in a scene.
Last days .. welllll doing al kinds of stuff.
Changed some vlans in my network.
I need to think of a way to extract/migrate domoticz 433 info into a new instance.
For example .. i’ve got some instances in my device list which are only being controlled by domoticz, there is no remote i can reuse.
Tried welding again, because i could not do it for a long time, i noticed i have to practice again after 2 years.
(I’ve got a dedicated power outlet outside now .. 🙂
Last 8mm films work done. (Converted all of my dad’s old 8mm reels)
Designed a hidden remote cabinet, holding remotes out of sight for the occasions when automation doesn’t work.
Designed also a wooden wall with hidden cabinets in our bedroom.
Repaired a Gardena Leafblower .. again!
Searx is a free and open-source metasearch engine, available under the GNU Affero General Public License version 3, with the aim of protecting the privacy of its users. To this end, Searx does not share users’ IP addresses or search history with the search engines from which it gathers results.
It’s easy to install using docker, but i wanted to add my own mysql server data. ( pipetune search engine data in below example )
There are many search plugins and quite hackable.
But there was a missing python module in a docker image.
ModuleNotFoundError: No module named ‘mysql’
So i build a new docker image based on the original
# Install docker and docker-compose cd /usr/local git clone https://github.com/searxng/searxng-docker.git cd searxng-docker Edit the .env file to set the hostname Generate the secret key sed -i "s|ultrasecretkey|$(openssl rand -hex 32)|g" searxng/settings.yml Edit the searxng/settings.yml file according to your need Check everything is working: docker-compose up Run SearXNG in the background: docker-compose up -d
I’ve changed the docker-compose.yaml
Changed < image: searxng/searxng:latest into > build: . And changed the listen address < - "127.0.0.1:8080:8080" into > - "8080:8080"
Created a Dockerfile
FROM searxng/searxng:latest RUN pip install mysql-connector-python
Changed searxng/settings.yml
engines:
- name: tunesdb
engine: mysql_server
host: 10.12.0.xx
database: pipetunesearch
username: xxxxxxx
password: xxxxxxx
limit: 50
query_str: 'SELECT * from tunes WHERE tunename=%(query)s'
I could not use a like statement in de sql query .. have to look into that
query_str: 'SELECT * from tunes WHERE tunename like %(query)%' .. doesn´t work
Example showing own data
To complete this post the reverse proxy info ..
<VirtualHost *:443>
SSLEngine on
SSLProxyEngine On
SSLProtocol all -SSLv2 -SSLv3 +TLSv1
SSLCipherSuite ALL:!ADH:!EXPORT:!SSLv2:!RC4+RSA:+HIGH:+MEDIUM
SSLCertificateFile wildcard.cer
SSLCertificateKeyFile my.key
SSLCertificateChainFile GlobalSignRootCA.cer
SSLCertificateChainFile AlphaSSLCA-SHA256-G2.cer
CustomLog /var/log/httpd/search_ssl_request_log "%t %h %{SSL_PROTOCOL}x %{SSL_CIPHER}x \"%r\" %b"
ServerAdmin webmaster@henriaanstoot.nl
ServerName search.henriaanstoot.nl
ProxyRequests Off
ProxyPreserveHost On
SSLProxyVerify none
SSLProxyCheckPeerCN off
SSLProxyCheckPeerName off
<Location />
ProxyPass http://dockerhostip:8080/
ProxyPassReverse http://dockerhostip:8080/
</Location>
ErrorLog /var/log/httpd/search.henriaanstoot.nl-error.log
CustomLog /var/log/httpd/search.henriaanstoot.nl-access.log combined
</VirtualHost>
I started to get some composite video generated with a arduino for my 6502 project.
UPDATE: 20221021
It is based on Grant Searle’s design, and yesterday I had some signals on my scope which looked like a screen with a character. But my monitor would not recognize a usable signal.
Today I tried a second version and another set of chips and crystals.
It looks like a signal, but I can’t see a clock pulse from the crystal?! So .. how?
Maybe I used a bad power supply. And killed something?
UPDATE: 20221021
After switching to another power supply, and checking the atmega328p fuses again (also wrong) .. at least SOME success!
Some minipro info #Erase minipro -p ATMEGA328P@DIP28 -E #Flash hex code minipro -p ATMEGA328P@DIP28 -w SBCVideo.hex #Flash fuses minipro -p ATMEGA328P@DIP28 -e -c config -w fuses #Used fuses file lfuse = 0xf7 hfuse = 0xd9 efuse = 0xfc lock = 0xff lfuse = 0xff hfuse = 0xff efuse = 0xff user_id0 = 0xff user_id1 = 0xff user_id2 = 0xff user_id3 = 0xff user_id4 = 0x37 user_id5 = 0x37 user_id6 = 0x39 user_id7 = 0x36 #Dump all from atmega328p minipro -p ATMEGA328P@DIP28 -r dump -f ihex
Some info about the fuses:
https://www.allaboutcircuits.com/projects/atmega328p-fuse-bits-and-an-external-crystal-oscillator
There are a lot of old develop boards for all kinds for cpu’s.
These where build to learn machine code programming. Mostly made in the 80’s, and based on populair cpu’s at that time.
I own a some of these SDK’s (System Design Kits)
Most of these use a keyboard scanner which is also connected to 7 segment displays.
The way they work is practically the same. There is a VIA or PIA. Versitile interface adaptor, or Peripheral interface adaptor. These have two times 8 bits to control devices.
When using 4 bits and convert these to 16 lines by using a 75ls145 for example. If you put a counter on those 4 bits, you sequently activate 1 of 16 lines. These lines you can use to scan a keyboard matrix OR display a character on a 7 segment display. These display’s won’t hold the data (and show the character) when not activated. The trick is to update de display fast enough so you don’t see the flickering on/off.
Activate a line and read a byte with the VIA = Reading keyboard row
Activate a line and write a byte with the VIA = Display on a segment
These VIA/PIA’s where made with specific timings to match the CPU.
6522/6820/8255
Below you see some different implementations of these keyboard/display combo’s
When looking at the 8085 version you see transistors being a ULN2003 is a chip with those transistors/amplification enclosed.
It doesn´t draw much current from the bus, and diodes protect the way the current flows.
Februari 2021 i made a website to view images and movies in a browser to do some quick sorting. (borrowed some code from a codepen page i recall correctly)
At the time i didn´t have a good way to view webp webm media.
I wanted to view multiple files at the same time, and make it short and simple.
BTW no webserver needed, just open the file from a directory!
jpg’s png’s webm webp mp4 svg and animated gifs work. (maybe more, didn’t test more, whatever your browser supports)
With recent updates of the chrome browser the video attributes to mute is broken, i so made a workaround.
Also everything is in one file now.
Except for one issue .. i couldn´t create one file for images AND videos.
There is a piece of javascript i could not fix … yet
I have to do execute a document.createElement which is different for images and videos.
Also the attributes of video are mute,autoplay,loop,playinline
Examples:
index.html
<a href="video.html">Video version</a>
<div id="drop-area">
<form class="my-form">
<label class="button" for="fileElem">Drop some images</label>
</form>
<div id="gallery" /></div>
</div>
<style>
body {
font-family: sans-serif;
}
#drop-area {
border: 2px solid #ccc;
}
.my-form {
margin-bottom: 10px;
}
#gallery {
margin-top: 10px;
}
#gallery img {
width: 300px;
}
}
#fileElem {
display: none;
}
</style>
<script>
let dropArea = document.getElementById("drop-area")
;['dragenter', 'dragover', 'dragleave', 'drop'].forEach(eventName => {
dropArea.addEventListener(eventName, preventDefaults, false)
document.body.addEventListener(eventName, preventDefaults, false)
})
;['dragenter', 'dragover'].forEach(eventName => {
dropArea.addEventListener(eventName, highlight, false)
})
;['dragleave', 'drop'].forEach(eventName => {
dropArea.addEventListener(eventName, unhighlight, false)
})
dropArea.addEventListener('drop', handleDrop, false)
function preventDefaults (e) {
e.preventDefault()
e.stopPropagation()
}
function highlight(e) {
dropArea.classList.add('highlight')
}
function unhighlight(e) {
dropArea.classList.remove('active')
}
function handleDrop(e) {
var dt = e.dataTransfer
var files = dt.files
handleFiles(files)
}
function handleFiles(files) {
files = [...files]
files.forEach(previewFile)
}
function previewFile(file) {
let reader = new FileReader()
reader.readAsDataURL(file)
reader.onloadend = function() {
let img = document.createElement('img')
img.src = reader.result
document.getElementById('gallery').appendChild(img)
}
}
</script>
video.html
<a href="index.php">Images version</a>
<div id="drop-area">
<form class="my-form">
<label class="button" for="fileElem">Drop some videos</label>
</form>
<div id="gallery" /></div>
</div>
<style>
body {
font-family: sans-serif;
}
#drop-area {
border: 2px solid #ccc;
}
.my-form {
margin-bottom: 10px;
}
#gallery {
margin-top: 10px;
}
#gallery video {
width: 300px;
}
}
#fileElem {
display: none;
}
</style>
<script>
let dropArea = document.getElementById("drop-area")
;['dragenter', 'dragover', 'dragleave', 'drop'].forEach(eventName => {
dropArea.addEventListener(eventName, preventDefaults, false)
document.body.addEventListener(eventName, preventDefaults, false)
})
;['dragenter', 'dragover'].forEach(eventName => {
dropArea.addEventListener(eventName, highlight, false)
})
;['dragleave', 'drop'].forEach(eventName => {
dropArea.addEventListener(eventName, unhighlight, false)
})
dropArea.addEventListener('drop', handleDrop, false)
function preventDefaults (e) {
e.preventDefault()
e.stopPropagation()
}
function highlight(e) {
dropArea.classList.add('highlight')
}
function unhighlight(e) {
dropArea.classList.remove('active')
}
function handleDrop(e) {
var dt = e.dataTransfer
var files = dt.files
handleFiles(files)
}
function handleFiles(files) {
files = [...files]
files.forEach(previewFile)
}
function previewFile(file) {
let reader = new FileReader()
reader.readAsDataURL(file)
reader.onloadend = function() {
let video = document.createElement('video')
video.setAttribute('volume', '0');
video.setAttribute('height', '300');
video.setAttribute('autoplay', true);
video.setAttribute('loop', true);
video.setAttribute('playsinline', true);
video.setAttribute('oncanplay', 'this.muted=true');
video.src = reader.result
document.getElementById('gallery').appendChild(video)
}
}
</script>
We bought some servers a while ago, but these have old ILO versions (2).
To manage these servers via ILO was no problem until modern browsers refuse to connect to these web services, because of TLS 1.0 issues.
So what i did was using a second user account on my workstation with a old (downloaded from a ESR archive) version firefox. To administer the ILO
wget https://ftp.mozilla.org/pub/firefox/releases/50.0/linux-x86_64/en-US/firefox-50.0.tar.bz2 extract in other users homedir usage: # ssh with X forwarding and start old version ssh -X otheruser@localhost firefox/oldfirefox
While this was working for me on a debian based machine it didn’t work for my friend who was using Fedora on Wayland.
So i made a more generic solution which would work always. Also when working from windows.
I downloaded a old Fedora version ISO.
https://archives.fedoraproject.org/pub/archive/fedora/linux/releases/15/Fedora/x86_64/iso/
Using the DVD iso i knew the old JAVA was present.
So i started virt-manager and created a new virtual machine
Select your downloaded Fedora 15 ISO
Create a disk image for the OS, don’t worry about the size we are going to shrink it to a minimum (thin provisioned)
Disable all thats not needed! .. Only Gnome Graphical internet .. and JAVA
Create users, complete the install and reboot.
Test your installation.
Shutdown
sudo qemu-img info /var/lib/libvirt/images/fedora15.qcow2
When above gives you a RAW image, you need to convert from RAW to QCOW first.
Mine showed a 9G qcow2 image .. far to large
sudo apt install guestfs-tools
virt-sparsify -v fedora15.qcow2 fedora15spars.qcow2
9665380352 okt 10 13:05 fedora15.qcow2
2926444544 okt 10 13:21 fedora15spars.qcow2
From 9 down to 3GB
Testing the Java applet console
Success!
I only have to check my new design for a generic matrix keyboard once again, and then i’m going to order a few of these prints.
I’ve used the opensource tool freeroute to autoroute the coppertraces
TODO: Look into charlieplexing ! For input and Led control