Pyssel

Updated 2024-11-14 ! In a former post I did some hacking/checking how our underfloor heating control system handled the valves, actuators, regulating the heat.  Now it was time to do some tests with Node-RED(NR), with a PID controller ,  and a Shelly 1 (S1) connected via WiFi and driving the actuator. The actuators are in my case controlled by 24 VAC and the S1 accepts 110 - 240 VAC, 24 - 60 VDC and 12 VDC. So in this case it was simple to just add a rectifier and a capacitor, to the 24 VAC, to get approx 36 VDC to source the S1.

Matter is a smart home standard currently being developed by a consortium of over two hundred companies, including big players such as   Apple ,   Google ,   Phillips ,   Amazon   and   Samsung . Many new devices have Matter implemented, from the beginning, but devices, such as most of Shelly devices don't. On the other hand many hubs can be upgraded to Matter support. For example an Apple TV. With a Matter bridge  you can solve the incompability. This post will use  Matter bridge plugin Manager and the Shelly plugin  but it could be other devices shown in the picture below.

Updated 2024-11-14 ! The installation of a CTC heat pump(HP), EcoAir 600 , and the indoor module, Eco Zenith i360 , was not optimal from the beginning, so to monitor it closely I checked how to retrieve data.  The newer CTC HP:s are always shipped with a MODBUS TCP interface, without any additional hardware, which solved the issue. MODBUS was new to me but after some reading and checking I found that there is a NodeRed node which solves the interface dialog.

In my project to get data from the Swegon Casa HRV, FTX, i needed a new solution to distribute the MODBUS data from the CASA. The thing is that I have a Raspberry Pi(RPi) that is the central HUB for everything going on in our house, but away from the CASA, and the data is there  vizualized in a NodeRed dashboard. Since the CASA RTU is serial, using   Waveshare USB to RS 485 ,   and I didn't want to install a new long cabel to the central RPi I used another RPi which is near the CASA.

Updated 2024-11-09 I have been using Shelly devices for quite some time both on our boat , off grid, and also as HomeKit (HK) accessories via Homebridge (HB) .  I was really amazed when I found that some smart guys have created a software package that replaces the stock, official, Shelly firmware with the  "Shelly-HomeKit" package which emulates a "native"  Apple HomeKit accessory. It's very nice done, really simple, and the flashing of the software is done over the air (OTA) with your ordinary WEB-browser.

Updated 2024-11-06 ! 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  ?

Fresh air at home is very important ! For more than 15 years ago, at a major renovation of our house, we installed an HRV or in Swedish  FTX system . Since then there have been nice updates for FTX equipment so when one of the fans was a little noicy and when the motor for the rotor died it was time to do an upgrade instead of repairing the old one. So we purchased an  CASA R7 Genius (R7). For me its important to get as much data as possible, to optimize energy consumption in our house, so despite that the the R7 have a nice app we also added a SEM interface to get the data, via MODBUS , that is available.

Updated 2024-10-25 I found this amazing application,   AIS-catcher , just scrolling around on Youtube and  it includes "all" you need for an AIS receiver staying ashore or installed on a boat. It is compatible with a wide range of Software Defined Radios (SDRs). These include RTL-SDR dongles (such as the ShipXplorer AIS dongle and RTL SDR Blog v4), AirSpy (Mini/R2/HF+), HackRF, SDRPlay, SoapySDR, and file/network input (ZMQ/RTL-TCP/SpyServer). 

Updated 2024-08-30 !  !! Another SW solution is available for RPi 5 here !  using the same HW. Thanks to Thomas, (the guy with the nice marine interface board ) ,  it's now possible  to decode, one way, the SeaTalk1(ST1) sentences in a pretty simple way. You just  use OpenPlotter(OP) and/or SignalK(SK) and an  Optocoupler . The thing that made it, is that Thomas   has released a "how to" and  Python source code , that will read the data from a GPIO pin on the Raspberry Pi, (RPi), and format it so the standard parser in SignalK can translate it to SignalK delta format. It is then  available as NMEA 0183. It's even possible to send the data in to a NMEA 2000 network, with a proper hardware interface.