I love shellies, easy to implement and hacker friendly.
MQTT out of the box. Curl in and out – you can switch it on/off using curl, but it can send a http command also. I’ve used this with Domoticz and Home Assistant. It has a webinterface, with timers, and there is also a client for Android/Iphone You’ve got some own gpio pins to your disposal and the unit is flash-able!
curl -X POST https://shellydevice/device/relay/control -d "channel=IDHERE&turn=on&id=ID&auth_key=AUTH"
The device is not isolated from the mains. To flash it, the mains must be disconnected.
SHELLY 1
I use this for simple on/off switches around the house. Using it with a physical switch and MQTT (Nodered)
Same as above but this one has a build in power meter
SHELLY DIMMER
Generic dimmer
Dimmer with low voltage rotary encoder! https://www.instructables.com/Shelly-Dimmer-Wall-Switch-With-Rotary-Knob-and-Hom/
SHELLY RGBW2
A RGBW / 4 Channel controller You can connect RGB strips, but also dimmable white strips in 4 channels. 12V or 24V. NOTE! : There is a common 12V connection, and GND will be controlled!
SHELLY PLUG S
I love these small wall plugs, i’ve used these also to find power consuming devices around the house.
For example, i made a nodered flow, to see if the washing machines are running or not.
Old files, own created stuff, downloaded stuff. Sometimes there are no viewers anymore, or you thrown devices away.
(I will add to this when i find more information)
These are the tools i’ve used to convert them to a newer format.
NOTE: Converting will always impact the quality
IMAGES
LBM (amiga)
ilbmtoppm < test.LBM | pnmtopng - > test.png
RAM (video files)
ffmpeg -i file.ram file.mp4
or
ffmpeg -i file.ram file.gif
Own DVD’s NOTE: VOB files are mpg, to keep same quality i use stream copy (-c copy) , besides mpg i´d like to have movies in a web streamable format like MP4, so i DO convert these
http://www.swffileplayer.com/ https://flasharch.com/en/downloads .. and record with OBS
AMR ( Adaptive Multi-Rate audio codec )
ffmpeg -i folkband.amr -ar 22050 folkband.mp3
3GP
ffmpeg -i pipes.3gp -vcodec h264 -c:a aac pipes.mp4
If your 3gp is recent and has a x264 tag (check with mediainfo)
then you can convert lossless with
ffmpeg -i 10026202.3gp -c:v copy -c:a copy 10026202.mp4
QTVR (need to get a better solution for this) I’ve used this for rendered scenes
This server was running nginx
drwxrwx---. 2 root apache 6 Jan 3 18:19 wsdlcache
drwxrwx---. 2 root apache 16384 Jan 3 18:19 session
drwxrwx---. 2 root apache 6 Jan 3 18:19 opcache
fixed with:
chown root:nginx /var/lib/php/session
chown root:nginx /var/lib/php/opcache
chown root:nginx /var/lib/php/wsdlcache
Other things to check (Generic)
Really slow storage can cause problems, check with iotop
Check selinux! (temporary test with : setenforce 0 )
Behind a reverse proxy? remove these options in your config.php and check a local connection. This is a test for: reverseproxy, firewall and proxy settings in config.php. Need to test a localhost connection with your browser? ssh -L8080:localhost:80 nextcloudserver (and connect to http://localhost:8080 with your browser
Check your services! .. memcache, nginx, apache, mysql/mariadb
Some directories on my fileserver are encrypted using ecryptfs.
eCryptfs is a POSIX-compliant enterprise cryptographic stacked filesystem for Linux. eCryptfs stores cryptographic metadata in the header of each file, so that encrypted files can be copied between hosts; the file will be decrypted with the proper key in the Linux kernel keyring. There is no need to keep track of any additional information aside from what is already in the encrypted file itself. You may think of eCryptfs as a sort of “gnupg as a filesystem”.
Example crypted directory using filename encryption
You can use the same dir for mounting! Filenames are encrypted also. Use umount go back to the crypted state
NOTE: You can write files to the crypted dir, if you are NOT using filename encryption, you can’t see which one is crypted and which is not. Use the script below to get hints of the readable files!
mount -t ecryptfs securedir securedir
Passphrase:
Select cipher:
1) aes: blocksize = 16; min keysize = 16; max keysize = 32
2) blowfish: blocksize = 8; min keysize = 16; max keysize = 56
3) des3_ede: blocksize = 8; min keysize = 24; max keysize = 24
4) twofish: blocksize = 16; min keysize = 16; max keysize = 32
5) cast6: blocksize = 16; min keysize = 16; max keysize = 32
6) cast5: blocksize = 8; min keysize = 5; max keysize = 16
Selection [aes]:
Select key bytes:
1) 16
2) 32
3) 24
Selection [16]:
Enable plaintext passthrough (y/n) [n]:
Enable filename encryption (y/n) [n]: y
Filename Encryption Key (FNEK) Signature [xxxxxxxxxxxxxxxxxx]:
Attempting to mount with the following options:
ecryptfs_unlink_sigs
ecryptfs_fnek_sig=xxxxxxxxxxxxxxxxxx
ecryptfs_key_bytes=16
ecryptfs_cipher=aes
ecryptfs_sig=xxxxxxxxxxxxxxxxxxx
Mounted eCryptfs
Crypting disks for travel/backup
For this i’m using Luks
The Linux Unified Key Setup (LUKS) is a disk encryption specification created by Clemens Fruhwirth in 2004 and was originally intended for Linux.
While most disk encryption software implements different, incompatible, and undocumented formats , LUKS implements a platform-independent standard on-disk format for use in various tools. This not only facilitates compatibility and interoperability among different programs, but also assures that they all implement password management in a secure and documented manner
Formatting a disk and mounting
cryptsetup luksFormat /dev/sdb1
WARNING!
========
This will overwrite data on /dev/sdb1 irrevocably.
Are you sure? (Type uppercase yes): YES
Enter passphrase for /dev/sdb1:
Verify passphrase:
root@workstation:~# cryptsetup luksOpen /dev/sdb1 crypto
Enter passphrase for /dev/sdb1:
root@workstation:~# mkfs.ext4 /dev/mapper/crypto
mke2fs 1.44.1 (24-Mar-2018)
Creating filesystem with 244188672 4k blocks and 61054976 inodes
Filesystem UUID: 844eb9ee-d4da-4dfd-9d94-b62987e96b93
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848
Allocating group tables: done
Writing inode tables: done
Creating journal (262144 blocks): done
Writing superblocks and filesystem accounting information: done
root@workstation:~# mount /dev/mapper/crypto /backup/
Umount and close
umount /backup
cryptsetup luksClose crypto
File crypt checker (checks for data files which COULD be crypted)
#!/bin/bash
find secure -type f -exec file {} \;| egrep -v "ASCII text|MS Windows shortcut|ISO-8859 text|image data|PDF document|PC bitmap|Composite Document File|WebM|ISO Media|Microsoft Word|HTML| Microsoft Excel|Matroska|vCard|Microsoft ASF|Web/
P|RIFF|MPEG|RealMedia|UTF\-8 Unicode|Zip archive data|Macromedia Flash|RAR archive|EPUB document|Adobe Photoshop Image|AppleDouble|OpenType|empty|gzip compressed data|MS Windows|OpenDocument|Paint Shop Pro|executable|PostScript document|
Rich Text|audio data|SVG Scalable|UDF filesystem|very short file|Web Open Font Format|IFF |TrueType|BeautifulWatches|MTS:" > data-or-not
OR
File crypt checker ( When the directory is in crypted state ) All files should be raw data
Today working on the backend engine and screens like this. All text will be generated, and send from the server.
A local version to try in your browser: (optimized for 1920×1080 press F11!)
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Indie+Flower&family=Tangerine&display=swap" rel="stylesheet">
<style>
body {
background: url("background.jpg");
height: 1080px;
width: 100%;
text-align: center;
margin: auto;
font-family: 'Tangerine', cursive;
color:#000;
}
/* The Modal (background) */
.modal {
display: none; /* Hidden by default */
position: fixed; /* Stay in place */
z-index: 1; /* Sit on top */
padding-top: 100px; /* Location of the box */
left: 0;
top: 0;
width: 100%; /* Full width */
height: 100%; /* Full height */
overflow: auto; /* Enable scroll if needed */
background-color: rgb(0,0,0); /* Fallback color */
background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}
/* Modal Content */
.modal-content {
background-image: url("note.jpg"); /* The image used */
height: 788px; /* You must set a specified height */
background-position: center; /* Center the image */
background-repeat: no-repeat; /* Do not repeat the image */
margin: auto;
padding: 20px;
}
/* The Close Button */
.close {
position: absolute; /*Can also be `fixed`*/
color: #ff0000;
font-size: 40px;
right: 550px;
font-weight: bold;
}
.close:hover,
.close:focus {
color: #000;
text-decoration: none;
cursor: pointer;
}
.topcontent {
width: 400px;
height: 200px;
font-family: 'Indie Flower', cursive;
font-size: 40px;
position: absolute; /*Can also be `fixed`*/
left: 0;
right: 350;
top: -440;
bottom: 0;
margin: auto;
/*Solves a problem in which the content is being cut when the div is smaller than its' wrapper:*/
max-width: 100%;
max-height: 100%;
overflow: auto;
}
.playercontent {
width: 400px;
height: 200px;
font-family: 'Indie Flower', cursive;
font-size: 40px;
position: absolute; /*Can also be `fixed`*/
left: 0;
right: 300;
top: -340;
bottom: 0;
margin: auto;
/*Solves a problem in which the content is being cut when the div is smaller than its' wrapper:*/
max-width: 100%;
max-height: 100%;
overflow: auto;
}
.content {
width: 400px;
height: 200px;
font-family: 'Indie Flower', cursive;
font-size: 40px;
position: absolute; /*Can also be `fixed`*/
left: 0;
right: 0;
top: 100;
bottom: 0;
margin: auto;
/*Solves a problem in which the content is being cut when the div is smaller than its' wrapper:*/
max-width: 100%;
max-height: 100%;
overflow: auto;
}
</style>
</head>
<body>
<!-- Trigger/Open The Modal -->
<button id="myBtn">Incoming message</button>
<!-- The Modal -->
<div id="myModal" class="modal">
<div class="topcontent">HQ</div>
<div class="playercontent">Spy #1</div>
<div class="content">We need the code now! Look for a yellow key</div>
<!-- Modal content -->
<div class="modal-content">
<span class="close">close</span>
</div>
</div>
<script>
// Get the modal
var modal = document.getElementById("myModal");
// Get the button that opens the modal
var btn = document.getElementById("myBtn");
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks the button, open the modal
btn.onclick = function() {
modal.style.display = "block";
}
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
if (event.target == modal) {
modal.style.display = "none";
}
}
</script>
Example network with DMZ part, using VLANs and trunks. Tested in my network, but not my current setup.
VLAN 3 – DMZ VLAN 10 – Homenetwork VLAN 128 – MGT
Modem : fritzbox, is dhcp server for 192.168.1.1 network CRS: is dhcp server for wlan, home network, management, Also a firewall with NAT is configured here. ( No block examples below, only NAT ) RB: (Routerboard 2011) has no IPs except for a management IP (not in config below) Server and Reverse proxy are in the 192.168.1.1 network. (dhcp requests in a dmz vlan (3) get their IP from the modem DHCP pool.
Example ip’s server and PC
server: gets dhcp from modem, 192.168.1.10/24 gateway 192.168.1.1 DNS 192.168.1.1 PC: gets dhcp from CRS, 10.10.0.1/24 gateway 10.10.0.253 DNS 1.1.1.1
Only the ones i’ve played recently or having good memories playing it. Only noteworthy games
PyramidMummy pharaoh thingy ??? One of the first games i remember. (Besides Pong on a “pong-only” system)
I’ve played a Mummy game in Black/White on a XZ81 or ZX Spectrum, one of the first Computers i had access to. (Richard) But i can´t find/remember the name.
In The Sentinel, the player takes the role of a Synthoid, a telepathic robot who has to take control of a number of surreal, checkered landscapes of hills and valleys, by climbing from the lowest spot, where the hunt begins, to the highest platform, over which the Sentinel looms.
The Synthoid itself cannot move across the level; instead it can look around, accumulate energy by absorbing the objects that are scattered across the landscape, create stacks of boulders, generate inert Synthoid shells and transfer its consciousness from one of these clones to another.
Kings Quest II?(1985)
Played this with my friend Richard on his Atari ST
Few years later, same kind of Game Engine:
Leisure suit larry in the land of the lounge lizards
The player races a vehicle against several other computers controlled competitors in various settings, including city, mine, and industrial areas. The player has a certain amount of time to complete each race, but more time may be gained by collecting bonuses, damaging the competitors’ cars, or by running over pedestrians. Unusually for a racing game, checkpoints do not extend the time limit.
7th Guest
The 7th Guest is an interactive movie puzzle adventure game, produced by Trilobyte and originally released by Virgin Interactive Entertainment in April 1993. It is one of the first computer video games to be released only on CD-ROM. The 7th Guest is a horror story told from the unfolding perspective of the player, as an amnesiac. The game received a great amount of press attention for making live action video clips a core part of its gameplay, for its unprecedented amount of pre-rendered 3D graphics, and for its adult content. In addition, the game was very successful, with over two million copies sold. It, alongside Myst, is widely regarded as a killer app that accelerated the sales of CD-ROM drives.
DOOM and Quake
Many many hours i’ve spend playing doom with Mandy on my first network (1995?) Quake was my Graphics Card Checker, i never made it to level two!
And dual player Stunt Car Racer. We played this before there were networks, using a serial cable!
Simulators and more
I used to have Microsoft Flightsim (the old version) , but my main operating system is Linux so i switched to XPlane (Windows, linux and Mac) See other posts about Flightsims
VR games
We bought VR glasses. Besides viewing movies in 3D, playing with Blender in 3D, Xplane flightsimulator there are some games i sometimes play.
I expect you to die, WWI Warplanes, Green Hell and Mass Exodus Redux. The last one is great fun together with a PC player.
Android games
Tried several games, non stuck. I enjoyed “SpaceTeam” the most. Current (dorment on my phone) : Mekorama, BinaryGrid2 (Yes Nerd), Dice me and 2 Player Reactor (those last two, for playing with friends while traveling)
Arcade games
I only knew Galaga, on a table version in Germany (We played there with the Concord Pipe Band) The other one was Hyper Olympics by Konami ( Snackbar “Lunch” when attending school LTS Deventer )
PC Games (Recent)
Uboot, Xplane Flightsimulator,Keep talking and nobody explodes https://store.steampowered.com/app/494840/UBOAT/
Switch Games (Recent)
Limbo, Unravel Two, Death Squared,Machinarium,Degrees of Separation, Guacamelee 2 Mostly Co-op
Sidetrack … pinball
I really like the Terminator pinball game. There is one in Zwolle at https://computermuseum.nl/ (This one i played when i was a soldier in 1992) I have some test setups for Virtual Pinballs, but its not the same.
Making a frame in a aluminum case, using rivets and nut rivets.
The nut rivet tool (suggestion by Duncan) is a superb addition in my tool shed!
There is place for 4 modules in this “test” case. I need to move the holes for the rivet-nuts, because the modules should go in every position. (Also 4 rounded corners)
