I have been asked to document my home sensor network. Being married to a person with a background in web security sets boundary conditions:
No cloud. We are running all services locally.
No control, only metrics.
I am collecting data from a number of plugs with power meters over Wifi, using the MQTT protocol. I am also collecting data from a number of temperature sensors over Zigbee, and convert to MQTT. The MQTT data is ingested into Influx, and then read and plotted in Grafana. All of this is dockered and runs locally on an Ubuntu server.
Startup SMLIGHT has launched the SLZB-06 Zigbee 3.0 to Ethernet, USB, and WiFi adapter with PoE support that works out of the box with open-source software such as Home Assistant and Zigbee2MQTT.
The device combines Texas Instruments’ СС2652Р microcontroller for Zigbee with ESP32 for WiFi, data transfer to Ethernet or USB, and peripheral functions such as LEDs and a button.The design is complemented with Microchip LAN8720 for Ethernet.
The LPRng software is an enhanced, extended, and portable implementation of the Berkeley LPR print spooler functionality. While providing the same interface and meeting RFC1179 requirements, the implementation is completely new and provides support for the following features: lightweight (no databases needed) lpr, lpc, and lprm programs; dynamic redirection of print queues; automatic job holding; highly verbose diagnostics; multiple printers serving a single queue; client programs do not need to run SUID root; greatly enhanced security checks; and a greatly improved permission and authorization mechanism.
The source software compiles and runs on a wide variety of UNIX systems, and is compatible with other print spoolers and network printers that use the LPR interface and meet RFC1179 requirements.
Subdirectories (the PPD one goes one level deeper with both files and directories; XEROX just has a subdirectory with one file):
These are only needed the first time to setup the Apple TV 2nd or 3rd generation:
HDMI Cable
Remote
Note that the Apple TV 4th generation or Apple TV 4K devices won’t work: they lack a TOSLINK interface.
You can work around this by using an HDMI audio extractor [Wayback/Archive.is]. Some can provide S/PDIF / TOSLINK output, others can directly do line out (so you do not need the above TOSLINK D/A converter):
mSATA, or miniSATA, is a smaller, thinner version of the full-size SATA SSD. The current mSATA works using SATA III, so it also reaches speeds of up to 6Gb/s. mSATA is essentially the same as the SATA SSD, except the outer shell is removed in order for it to be used in thin-profile devices. Many devices rely on mSATA, so although newly designed applications may opt to use M.2 SATA, mSATA still plays a central role in industrial storage.
In het kader van “kunnen dingen bij ons nooit eens normaal gaan?” het korte antwoord: nee.
Voorbeeld:
Voor de migratie van XS4ALL naar KPN hadden diverse telefoondoorschakelingen in gebruik (met name vertraagd doorschakelen: individuele nummers in ons huishouden gingen vertraagd door naar de bijbehorende mobiele nummers).
Na de migratie waren die allemaal weg. Het duurde even voor we daarachter waren omdat sinds de corona-periode vrijwel altijd iemand thuis is.
Kort en goed: we kamen er dus achter toen er niemand thuis was en we een opmerking kregen onbereikbaar te zijn (door iemand die ons mobiele nummer niet had).
Herstellen was ingewikkelder dan bedacht, want als je deze voor de hand liggende stappen van XS4ALL en KPN volgt kom je met een kluitje in het riet terecht:
7490 specs indicate it uses at least 1 WATT more power than the 7390
About cooling: according to the video both run the same temperature, either because the air cooling of the 7490 is better. I’m wondering if that is the same when running inside a closet.
The Wiert Corner - irregular stream of stuff 