Pyssel

Updated 2021-04-15 ! A cheap and simple way to measure temperature, and have it displayed in the Home app, is to connect one wire (1W)  DS18B20  (DS)temperature sensors direct to the Raspberry Pi(RPi) and install a DS plugin. This assumes that You have Homebridge up and running on a Raspberry Pi  Check this post !!    "ANY" temp source  can be HomeKit enabled.

Updated 2023-10-10 ! You can use one   Raspberry Pi to Make Your home automation devices appear in the Apple Home App Being the Z-Wave controller HomeKit enable Your Z-Wave devices HomeKit enable Your devices registered at Telldus Live HomeKit enable IKEA Trådfri devices  Homekit enable temperature with sensor  DS18B20 HomeKit enable Broadband speed If You have other products there are more than 4200 plugins  available A new simple install  !! is found here  so skip the below info if you aren't interested of the old way!

Updated 2023-11-05 ! An introduction to the SignalK, Marine application, is given here . A very easy way to measure temperature with Raspberry Pi, RPi, is to connect one wire (1W) DS18B20  (DS)temperature sensors direkt to the RPi GPIO. Here You find a post where the temperatures are transfered via WiFi

In former posts   I used the temperatur sensor DS18B20, in several applications, but now it was time for the boats exhaust temperature and checking out YDTC-13 from Yacht Devices (YDTC). ( But please note that the YDTC can be used in any temperature application.) When you are boating, using the engine, it's  very important that the cooling water  always is present otherwise major damages can follow.  In "wet exhaust" systems it's easy to get the temperature which I posted here .

Updated 2023-11-06 ! I have searched for a solution transmitting the NMEA data, from the navigation network, via WiFi, to for example  iSailor  or other Tablet/Phone applications. Most of these applications just accepts NMEA0183(N1) but many boats are also using SeaTalk 1(ST1) and NMEA2000(N2K). This post will cover, kept compact, my best findings covering both a DIY and a commercial approach to handle the different protocols.

An introduction to the SignalK(SK), Marine application, is given  here . A very easy way to measure temperatures with SK is to use one wire (1W)  DS18B20  (DS)temperature sensors.  In a former post the DS:s where connected direkt to the RPi GPIO:s, but in this post they are WiFi enabled via the Shelly 1 (S1). Alarms are also sent when the temperature exceeds a set value. If humidity is of interest You can use a   DHT22  sensor instead of a DS sensor.

Updated 2022-06-10 ! In other posts I  blogged about a way to measure temperature with a Raspberry Pi(RPi), direct connected or via WiFi , together with the marine applikation SignalK(SK). In this post I will follow up with a short brief about the practical solution, measuring exhaust temperature in a boat and sending an alarm if the temperature exceeds a set value . In "wet exhaust" systems it is very important that the cooling water, injected in the exhaust system, always is present otherwise major damages can follow. If you wan't to avoid a RPi check  this post  with approved NMEA 2000 temperature sensors from Yacht Devices 

Updated 2020-07-10 ! systemd is service manger which autostart jobs and it will even  restart the Homebridge(HB) job if it fails !   Keep it simple !! New post with  a script which handles the setup automagically !! or use the latest HB install where this is included. Other   HomeKit posts   on this Blogg