Opentherm Shield, OTGateway is a powerful open-source solut
- Opentherm Shield, OTGateway is a powerful open-source solution for controlling OpenTherm-compatible boilers, turning your heating system into a smart one. Contribute to diyless/home-assistant-opentherm-thermostat development by creating an account on GitHub. 50 Enclosure for Master OpenTherm Shield and WeMos D1 Mini ESP32 Quantity: The new OpenTherm test tool is available for OpenTherm members only and can be ordered by completing the order form (General Members Area) and send it to our secretariat. Learn how to use the Slave OpenTherm Shield with detailed documentation, including pinouts, usage guides, and example projects. Contribute to diyless/esphome-opentherm-thermostat development by creating an account on GitHub. OpenTherm is a simple protocol implemented on 2-wires bus allowing boiler and thermostat to communicate. 11, but it should also work with older versions. Connect the pins marked 'OT' of the OpenTherm controller with two wires to the boiler or use the screw terminals on the OpenTherm controller shield. On top of that there will be a simple on/off actuator (powered by 24V DC Arduino OpenTherm Shield can be used for stacking Master and Slave OpenTherm Shields together with Arduino UNO or MEGA board for building OpenTherm Thermostat or OpenTherm (OT) is a standard communications protocol used in central heating systems for the communication between a central heating boiler and a thermostatic controller. It will allow you to monitor and control your OpenTherm boiler with Arduino. We have built it, so you can grab firmware from here. Powered by a worldwide community of tinkerers and The OpenTherm shield is designed for you. The creators and contributors to this project make no representations or warranties, either express or implied, including but not limited to, any warranties of merchantability or fitness for a particular purpose. OpenTherm (OT) is a standard communications protocol used in central heating systems for the communication between central heating appliances and a thermostatic controller. I want to control the heating in each room individually. OpenTherm Connection Software There is OpenTherm Library, which implements OpenTherm protocol communication and should work with all OpenTherm compatible boilers. Check out the many features OpenTherm (OT) is a standard communications protocol used in central heating systems for the communication between a central heating boiler and a thermostatic controller. Note that special hardware is required, like the DIYLESS Master OpenTherm Shield or Ihor Melnyk's OpenTherm Adapter. Hi, We have created an OpenTherm Thermostat that works with an OpenTherm Gateway ( OTGW ). GitHub diyless/home-assistant-opentherm-thermostat Home Assistant OpenTherm Thermostat. ESP32/ESP8266 Thermostat Shield - DIYLESS Electronics The DIYLESS ESP32/ESP8266 Thermostat Shield is a low-cost and easy-to-use device that allows you to build your own OpenTherm-compatible thermostat. Ja używałem wersji master shielda z Wemos D1 Mini. 50 Quantity: Add to cart Description Parts List Shipping ESP8266 is not included. Master OpenTherm Shield can be used for building DIY OpenTherm Thermostat or can be used as part of the ESP8266 OpenTherm Gateway or Arduino OpenTherm Gateway You just need to follow these simple steps: The Arduino OpenTherm Shield is an open-source hardware interface designed to enable an Arduino microcontroller to communicate with heating systems using the OpenTherm protocol. Also viceverse. It will probably match the capabilities of industry grade devices on the market. Since OpenTherm doesn’t operate in a standard voltage range, special hardware is required. Home Assistant OpenTherm Thermostat This article describes how to build and automate a simple OpenTherm Wi-Fi thermostat using ESP8266 Thermostat Shield. This is is how I used the shield to create an OpenTherm regulator. Starting up. An OpenTherm thermostat shield to control a boiler or HVAC with an ESP32-S2 or an ESP32-C3 mini microcontroller. Place an OpenTherm shield into the lines between the existing boiler and thermostat and create a monitor to watch when and how the boiler is heating your home. What is Domoticz? Domoticz is a very light weight home automation system that lets you monitor and configure miscellaneous devices, including lights, switches, various sensors I have this Opentherm master shield: OpenTherm Thermostat - DIYLESS Electronics with the 2 wires from the original thermostat connected to the shields terminal block. How do I convert these codes? What do they mean? ESPHome OpenTherm Thermostat. e. I’m using an Arduino Mega with an OpenTherm shield and a library from Jiri Praus (documentation for OpenTherm protocol could be found here) as an example I am using his template for “master” thermostat. Alternatively, if you need some customizations - build your own with GitPod/Platformio, its Solder corresponding headers, screw therminal blocks to Master and Slave OpenTherm Shields and solder them on top of Arduino OpenTherm Shield Stack Arduino Gateway on Arduino Uno or Mega board Install OpenTherm Library into Arduino IDE Flash sample sketch Arduino OpenTherm Gateway can't be used as power source for a thermostat. Perfect for students, hobbyists, and developers integrating the Slave OpenTherm Shield into their circuits. The DIYLESS OpenTherm Thermostat Case is a durable and stylish enclosure designed for the Master OpenTherm Shield and WeMos D1 Mini ESP32. OpenTherm Shield: I used RJ12 phone socket as enclosure for OpenTherm Thermostat and to simplify connection to boiler. com blog. First: I know there are more topics around this item, but nearly all of them are using some kind of ZigBee device. Everything works fine, I can get outside temperature, boiler temperature, get/set DHW temperature, CH water setpoint…. Almost two hours until firing ESP32 tasmota OpenTherm Thermostat Today we will build a simple OpenTherm Wi-Fi thermostat using ESP8266 Thermostat Shield and Tasmota automation system Tasmota binaries preparation An ESP32 Tasmota binary with OpenTherm support enabled is needed. 10 and v2. Blynk OpenTherm Thermostat This article describes how to build simple OpenTherm cloud based Wi-Fi thermostat using Blynk platform and ESP8266 Thermostat Shield. Detailed instructions you can find in ESP32 Wi-Fi OpenTherm Thermostat post of diyless. a thermostat OpenTherm Regulator is an open-source Arduino compatible heating regulator. h file as described in the readme of the addon. So you can replace traditional room thermostat and control your boiler remotely using mobile application. For my home automation project, I used OpenTherm Gateway Arduino shield; however, this project uses OpenTherm library from Ihor Melnyk. com, that can be used for building a DIY OpenTherm Thermostat or can be used as part of an ESP8266/Arduino OpenTherm Gateway. The operation is based on heating curve and an embedded autotuned PID controller ( automatic gains ). . On top of that there will be a simple on/off actuator (powered by 24V DC An external ESPHome component to control a boiler (or other supported HVAC appliances) over the OpenTherm protocol. It gives you total freedom over your heating system with or without OpenTherm boiler and thermostat. All the radiators have been fitted with a thermostatic valve. This is a Master OpenTherm Shield made by diyless. You can use it as a monitor/remote control for your boiler or as a regulator for a complex heating system. The ESPHome-opentherm addon is indeed also a good choice for the opentherm master shield. Connect your boiler with Arduino OpenTherm shield as shown on the picture above, attach the shield on your Arduino and you can start programming. Domoticz OpenTherm Thermostat This article describes how to build a simple OpenTherm Wi-Fi thermostat using ESP8266 Thermostat Shield. They exchange various information including status, temperatures, and setpoints. What is Blynk? Blynk is a hardware-agnostic, popular Internet of Things platform for connecting any hardware to the cloud GitHub diyless/home-assistant-opentherm-thermostat Home Assistant OpenTherm Thermostat. My situation: I have a Nefit Proline NxT boiler with integrated OpenTherm support. Features Multi-room temperature control with support for temperature synchronization for main climates Adjustable heating curve coefficients to fine-tune your heating system Target temperature step for That is why to implement Master OpenTherm interface (thermostat) you need hardware adapter to adjust voltage levels, like Master OpenTherm Shield. You can use the existing wires from your current thermostat. OpenTherm allows having a man-in-the-middle (gateway) device that communicates with both boiler and thermostat. OpenTherm Gateway (OTGW) (MQTT or Serial) DIYLess Master OpenTherm Shield Ihor Melnyk's OpenTherm adapter Jiří Praus' OpenTherm Gateway Arduino Shield It can also function as a PID ON/OFF thermostat, providing advanced temperature control based on Outside Temperature compensation and the Proportional-Integral-Derivative (PID) algorithm. The DIYLESS ESP32/ESP8266 Thermostat Shield is a low-cost and easy-to-use device that allows you to build your own OpenTherm-compatible thermostat. Apr 4, 2025 · The Arduino OpenTherm Shield allows Arduino devices to communicate with OpenTherm-enabled devices seamlessly. It does it at some point but not quick enough. I am now using outside temperature to control the heating (via setting the heating curve). Mqtt Opentherm controller Projects Networking, Protocols, and Devices bartmarchand June 7, 2021, 12:54pm OTGateway is a powerful open-source solution for controlling OpenTherm-compatible boilers, turning your heating system into a smart one. So you can integrate your boiler control into your home automation system. If the boiler is off and I increase the target temperature is not starting it but only after a while. When paired with the Continue Shopping Share This ESP8266 Thermostat Shield € 14. It supports both m OpenTherm Adapter is minimized version of Arduino Controller and its compatible with 5V and 3. Continue Shopping Share This OpenTherm Thermostat Case € 4. This is an external esphome component to control a Nodoshop Opentherm Gateway. It seems the boiler is not turning off if target temperature is lower than the current temperature. buy Master OpenTherm Shield - DIYLESS Electronics - I really just need to control the boiler and don’t plan to combine it with an indoor thermostat. Salve OpenTherm Shield can be used for building DIY OpenTherm boiler, boiler simulation device or can be used as part of the ESP8266 OpenTherm Gateway or Arduino OpenTherm Gateway You just need to follow these simple steps: Solder corresponding headers, screw therminal block Stack WeMos/LOLIN D1 mini or WeMos D1 MINI ESP32 board (it is also can be used with Arduino or Raspberry Pi boards lowers fuel bills To build simple interface between boiler and ESP8266 controller I decided to make stackable OpenTherm Shield compatible with OpenTherm Adapter. Hello Blynk Community! I would like to present you simple OpenTherm thermostat example based on Blynk platform. It won't work with a DIYLESS Master OpenTherm Shield! Not all functionality offered by the gateway is currently supported, due to a lack of I explained this in: Opentherm Multi Room brainstorming / ideas - #5 by Dujith Its rough but the basic idea is that i take all the rooms, check the delta temperature (difference between setpoint and actual temp) and if there is a heating need it will use the biggest difference to send to the shield. What is Home Assistant? Home Assistant is an open source home automation that puts local control and privacy first. It has an option to take the temperature from an external sensor (currently im using xiaomi-aqara and bluetooth ones, located in different rooms). You can even intercept the communication to for example wirelessly control the heating. Opentherm slave shield for Wemos/Lolin ESP8266 module for connecting arduino to a opentherm compatible thermostat This is a Master OpenTherm Shield made by diyless. So you can replace traditional room thermostat and control and monitor your boiler remotely via Wi-Fi using web browser on smartphone or personal computer. Tested with gateway v2. So you can integrate your heating control into your Domoticz home automation system. Arduino OpenTherm IO library contains the following example to show you how to communicate with the boiler. Browse through hundreds of tutorials, datasheets, guides and other technical documentation to get started with Arduino products. Made two holes for micro USB charger and for WeMos D1 Mini led. The shield project is provided on an "as-is" basis. You can choose from several ready-made adapters or roll your own: DIYLESS Master OpenTherm Shield Ihor Melnyk’s OpenTherm Adapter Jiří Praus’ OpenTherm Gateway Arduino Shield DIYLESS Master OpenTherm Shield. Beware to change the pin numbers in the opentherm_component. I assume all adapters will work. Hello, I have the diyless shield + wemos d1 mini to control a viessman vitodens 100-W. 3V controllers like Arduino, ESP8266 or Raspberry Pi. Set the perfect temperature, save on energy bills, and eliminate unnecessary hassle — integration with Home Assistant makes heating management simple and automated. With this board you can control your OpenTherm enabled boiler or HVAC over Wi-Fi or BlueTooth, or integrate your boiler or HVAC with home automation systems like Tasmota, OpenHAB, Domoticz or Home Assistant. This shield is perfect for heating systems, making it easier to send and receive data from your heating devices. ESPHome OpenTherm Thermostat In today’s smart home revolution, thermostats play a key role in optimizing energy use and maintaining comfort. OpenTherm Adapter allows you to control your boiler using your favorite controller via OpenTherm protocol which is implemented in OpenTherm Library. To build the thermostat you will need a few parts: ESP32/ESP8266 module Master OpenTherm Shield DS18B20 … This article describes how to build simple OpenTherm Wi-Fi thermostat using ESP32 WebServer and ESP8266/ESP32 Thermostat Shield. This component acts only as an OpenTherm master (i. Please check PARTS LIST tab Think out of the box with ESP8266/ESP32 OpenTherm Thermostat Shield ESP8266 Thermostat Shield can be used for building your own DIY OpenTherm WiFi Thermostat with remote control for a cheap price and without any monthly The DIYLESS ESP32/ESP8266 Thermostat Shield is a low-cost and easy-to-use device that allows you to build your own OpenTherm-compatible thermostat. For prices and availability please also contact the secretariat of OpenTherm. To build the thermostat you will need a few parts: ESP32/ESP8266 module Master OpenTherm Shield DS18B20 … Hi everyone, I would like to control my Baxi gas boiler using an arduino uno, on which the opentherm arduino shield like this is mounted I loaded the jpraus example software and from the serial terminal I read a series of codes. While there are plenty of ready-made options, building your own thermostat is an exciting alternative. ESP32 Wi-Fi OpenTherm Thermostat ESP32 Wi-Fi OpenTherm Thermostat sketch allows you to build simple OpenTherm Wi-Fi thermostat using ESP32 module and ESP32/ESP8266 Thermostat Shield. The DIYLESS Thermostat offers a perfect blend of flexibility and affordability, making it an excellent choice for enthusiasts. That is why to implement Master OpenTherm interface (thermostat) you need hardware adapter to adjust voltage levels, like Master OpenTherm Shield. Arduino library and hardware shield to send and receive data from Opentherm devices - jpraus/arduino-opentherm Ogólnie diyless w momencie gdy kupowałem od nich shield to miał do wyboru tylko master i slave opentherm shield i własny termostat bazujący na ww. iuvpw6, pi0cxy, t4ysxa, btsod, gcazp, 6twi, dxkm5, lnlit, eikf, khq76,