Be safe, not sorry – use a multimeter to check!An excellent point. Hint: if minimizing standby power is important, you can use a 277V input transformer on 240V, just keep in mind the output voltage would be about 15% lower than rated.Solid state relays would work great for this one line in one line out 0 to 10 volts to control the output. I’d be surprised if you couldn’t runn it off that as most commercial stats need this to run. 2 things to think about heat anticipater and a cool anticipater (if you dont know what they are look it up please). Also, this data will be important for tuning the thermostat to avoid “short cycles”, when the system doesn’t run long enough to reach full efficiency, but turns on and off several times in short succession.Now that we’ve sorted the connection to the heater, temperature monitoring, and database, it’s time to put them all together. When they happened to both talk at once, both went down. Abboniere Raspberry Pi Tutorials, um kein Tutorial mehr zu verpassen!50 der wichtigsten Raspberry Pi Sensoren und ModuleRaspberry Pi Gas Sensor (MQ-X) konfigurieren und auslesenKY040 Drehregler als Lautstärkeregler für den Raspberry PiÜberwachung von Fenstern und Türen mit dem Raspberry Pi und Reed-RelaisRaspberry Pi Waage selber bauen (mit Gewichtssensor HX711)Raspberry Pi’s über 433 MHz Funk kommunizieren lassenMiFlora – Xiaomi Pflanzensensor ins Smart Home einbindenFunkkommunikation (2.4 GHz): Arduino & Raspberry PiRaspberry Pi Bluetooth Datentransfer zum SmartphoneRaspberry Pi Laser Lichtschranke für weite DistanzenRaspberry Pi: Luftfeuchtigkeit und Temperatur messenRaspberry Pi Temperatursensor (1-Wire): Temperatur messenRotation und Beschleunigung mit dem Raspberry Pi messenTipps & Tricks zum offiziellen 7″ Raspberry Pi TouchscreenTestbericht zum 7″ Raspberry Pi Touchscreen DisplayRaspberry Pi LCD Touch Display Teil 2 – AnpassungenRaspberry Pi: 7 Segment Anzeigen mit MAX7219 steuern (Kathode)7 Segment Anzeige mit MAX7219 am Raspberry Pi (Anode)Raspberry Pi Tablet „Sunfounder RasPad“ TestberichtRaspberry Pi Fingerprint Sensor zur Authentifizierung nutzenRaspberry Pi Ambilight für alle Geräte mit OSMC selber bauenAmazon Alexa (Deutsch) auf dem Raspberry Pi installierenMediencenter Raspbmc als SmartTV mit dem Raspberry PiRaspberry Pi als Jukebox (Spotify, Soundcloud, TuneIn, uvm. You can use other Raspberry Pi models but if you do the parts listed below and some of the steps might vary but concept should be the same. I’ve had this particular project in mind for quite some time, and was excited to dive into it with simple raw materials: my Raspberry Pi, a touchscreen, and a mechanical relay board.If you replace your standard home thermostat you find the most common setup has either 4 or 5 wires running to your HVAC equipment. First problem, my first experience with “Icky Pick”. Someone decided to cut the 100 pair trunk line coming into my office one day. This is a place where cellphones don’t work for 80 miles in either direction. Enter You may not be familiar with the name, but you’ve probably seen graphs produced by RRDTool, most notably in the Cacti monitoring suite. I’m sure I’ll get roasted for that last statement so I better explain. Paul does a lot of work making Arduino compatible and doing work on Arduino itself.Y’know, that really pisses me off. The stakes are much lower when talking about turning a light on/off or unlocking a door (burglary is not really a concern in my small town).I agreed that a microcontroller with some sane defaults in between the PI and the relays to act as a watchdog would be a solid improvement to this projectThere’s a really simple solution here, which most people with vacation homes do anyway: you have a separate, mechanical thermostat for freeze protection, wired in parallel with your fancy-pants unit. I for one do not want to see our friends world wide electrocuted or burning their houses down.Just an aside to this, but 200+ volts really isn’t the issue is it? TLDR: Only connect the two dedicated power pins and the ribbon cable, not the I2C pins on the display.As you can see above, we’ve exposed the two temperatures as part of our RESTful interface.

Now that we have access to that data, what do we do with it? For those reasons I would also say keep the stat as simple as possible. To quote him: “This is the great thing about rolling your own system: you get to decide exactly how it will work.” I would add: while ignoring all the possible failure modes, and creating new ones.Discovering failure modes and fixing them is all part of the experience. Starting with the Pi A+ and B+, there is a second I2C bus dedicated to the display, physically connected through the ribbon cable. Building a Thermostat with the Raspberry Pi. January 26, 2016 Seth Jennings 3 Comments. Jonathan was right the best way to set this up would be with an arduino as the controller. It’s an awesome amount of power in a tiny breadbordable form factor. I am just entering this fray, and was looking at using a GPIO board with a PI. that way safety is increased with a pi controller as both the pi and standby would have to fail to create a disaster.Stoobieboo: I like the points you bring up. The other common time I see it set different is at night. A field repair attempt was worth it. This is the great thing about rolling your own system: you get to decide exactly how it will work.All that’s left is the user interface.