June 01, 2023
Teltonika router RUT 240 quick setup
May 15, 2023
Shelly devices as "native" Apple HomeKit accessories
May 04, 2023
Shelly 1 quick install
Setup for the later version, Shelly Plus 1, is found here !!
S1 is a WiFi switch, 16 Amps, with dry contacts and the function "without Internet" + that the S1 can use a 12V DC source makes it perfect for an "use case" in a boat/mobile home.
It's compatible with Alexa, Google or HomeKit using HomeBridge or as a "native" HomeKit device using Mongoose firmware(Flashed via a standard WEB browser !)
May 03, 2023
Shelly PLUS 1 quick install
Updated 2023-05-03 !
In a former post I made a writing about Shelly 1(S1) and this post will handle about the successor Shelly PLUS 1(SP1) but much of the content is also valid for some of Shellys other devices which uses the same software/API.
To keep it simple, SP1 is a WiFi switch, 16 Amps, with dry contacts but compared to the S1 the hardware and the software is updated.
The function "without Internet" + that the SP1 can use a 12V DC source makes it perfect for an "use case" in a boat/mobile home.
May 01, 2023
HomeKit bridge with Shelly/Shelly 1
HomeBridge is used for this setup and to make it appear in the Apple Home app.
The main advantage with the Shelly devices are that they are WiFi enabled and therefore You don't have to use a hub, this compared to z-way/zigbee and some other solutions.
First install Shelly1(S1).
April 02, 2023
Bootable installer for "any" MAC OS
The other MAC:s I have are running Catalina or Big Sur and if you try to download and older OS, via app-store, you just get an error saying that the running OS don't accept the download of an old OS.
The universal way to create an USB installer seems to be using the command "createinstallmedia", requires OS X 10.7 Lion or later, but you need the respective OS install app !
March 27, 2023
Node-Red on MCU:s, Raspberry Pi Pico W
March 12, 2023
Upgrade from Buster to Bullseye, Raspberry
- Homebridge(HB)
- Razberry, Z-way interface
- CUPS, printer software
- Node-RED(NR)
When I started with the RPi it was Jessie, then Stretch and Buster. Every time I upgraded the SD card to the latest OS and it just worked. It should been said that I always waited a year or so and I'm using the RPi headless without any GUI.
Now it was time to go from Buster to Bullseye !
March 11, 2023
Raspberry/Linux print server Windows/Apple, CUPS
February 21, 2023
Receive temperature, 433 MHz sensors, with RTL-SDR
After some googling I went for 433 MHz devices.
February 20, 2023
Z-Wave on Raspberry PI
Installing a Z-Wave controller on Raspberry Pi is much easier than You think.
The only add on You need is the Razberry Z-wave Shield and free software from the same site.
February 14, 2023
Underfloor heating with PID controller, NodeRed
December 18, 2022
CTC heatpump MODBUS interface
November 06, 2022
Speedtest LAN and Internet/WAN, iperf3
August 16, 2022
macOS Monterey on unsupported Mac
This is despite that max OS for the Mac is High Sierra. This is done, among other things, due to that the patcher handles Macs with graphic cards from 2008 - 2011 which Monterey doesn't do natively.
Since my former upgrade, to Big Sur, included a format of the SSD disk I here used the patcher to do an upgrade from Big Sur to Monterey.
August 14, 2022
Node-Red quick install
Node-Red(NR) is Flow-based programming for the Internet of Things
This post isn't made as a complete install guide, there are several, just some links to the best information I have found.
The best thing is that even if you don't are a skilled programmer, but like logic flows, you can make really advanced things. It's pre-installed on some Raspberry Pi(RPi) distributions.
Running Node-Red with multiple instances ?
July 27, 2022
RS-232 with displays & AV equipment
After some checking I found that on most displays, even on our own TV set, there is a connector for the RS - 232 protocol that accepts commands similar to the commands sent by the remote control.
July 09, 2022
Davis PWS linked to pwsweather.com
An add on is that you via API:s can get both the current weather, forecast and other data free of charge, via the aerisweather.com(AW) site.
This post will handle the setup and also a Node-Red dashboard interfacing the aeris API.
July 04, 2022
Node-Red multiple instances, RPi
- a test environment for Node-Red(NR), separated from production
- separated instances for different applications
A post for NR quick install.
June 20, 2022
LK System, Floor heating
We had a problem that in some rooms, despite that the thermostat worked, the temperature was too high.
To check if it was the valve, or something else, I just took away the actuator and forced the valve to be closed. Cable ties did the work.
The valve was OK so what was the problem ?