https://old.andunix.net/ 2026-06-03T23:00:45+00:00 https://old.andunix.net/ https://old.andunix.net/_media/favicon.ico text/html 2014-02-02T11:19:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/p/dmx/protocol Serial Protocol For the communication between the host (PC) and the controller (Arduino), there is a serial protocol over USB. The protocol is line by line, with carriage return (“\n”) as end. The first character denotes the type of command or information. The following commands have been defined: text/html 2014-02-02T12:02:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/p/dmx/program Program The controller (Arduino) can be programmed to animate the value on a DMX channel from one value to another. The contoller has an program counter which is counted up by one every iteration. The iterations will be 5ms (200Hz), 10ms (100 Hz) or 20ms (50 Hz) long. The value of the program counter ist exchanged between the host an the controller with the command text/html 2013-02-04T22:17:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/script/dyndns_updates_without_client DynDNS Updates without a Client My new hosting provide Strato offers DynDNS. I was searching for a DynDNS client for my OpenSolaris Home Server, but a small bash script does the job as good as any other client. #! /bin/bash . ${HOME}/.dyndns.cfg DOMAINS=$(cat ${HOME}/.dyndns.domains) echo "$(date '+%Y-%m-%d %H:%M') $(basename $0)" for domain in ${DOMAINS}; do echo -n " ${domain} - " curl --silent --show-error --insecure --user ${LOGIN} "${UPDATE_URL}?hostname=${domain}" d… text/html 2014-04-28T08:07:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/debug_server_certificate_from_client Debug Server Certificate from Client Credit for this example goes to “ Checking A Remote Certificate Chain With OpenSSL” from langui.sh. openssl s_client -showcerts -connect www.andunix.net:443 Informations about the used arguments from the OpenSSL man page: * s_client: SSL/TLS client program * -showcerts: display the whole server certificate chain: normally only the server certificate itself is displayed.