Explore My Hobby Projects
Most of my projects are connected to DIY Electronics, Internet of Things and Programming.
Last Projects Recently added
MQTT OpenTherm Thermostat
by Ihor Melnyk
Posted on Saturday, September 1, 2018 at 12:00 AM, 48505 views
MQTT Thermostat is based on OpenTherm Thermostat, OpenTherm Library and ESP8266 controller (WeMos D1 Mini). Can be used for remote heating system control via nodeRED, openHAB, Home Assistant and Android Tasker etc.
Read MoreOpenTherm Thermostat
by Ihor Melnyk
Posted on Tuesday, July 17, 2018 at 12:00 AM, 81850 views
OpenTherm Thermostat is based on OpenTherm Adapter, OpenTherm Library and ESP8266 controller (WeMos D1 Mini).
So you can control your boiler remotely over WiFi via your smartphone.
Using OpenTherm protocol you will be able to:
- get boiler status
- set water temperature
- switch on/off central heating
- switch on/off hot water
- get gas modulation level
- ...and many other commands supported by OpenTherm protocol
OpenTherm Adapter
by Ihor Melnyk
Posted on Monday, April 2, 2018 at 12:00 AM, 123695 views
OpenTherm Adapter is minimized version of Arduino Controller and its compatible with 5V and 3.3V controllers like Arduino, ESP8266 or Raspberry Pi. OpenTherm Adapter allows you to control your boiler using your favorite controller via OpenTherm protocol which is implemented in OpenTherm Library. It is good for making your custom thermostat or for boiler remote control. Also OpenTherm thermostat can increase boiler efficiency comparing to usual on/off thermostat.
Read MoreOpenTherm Library
by Ihor Melnyk
Posted on Sunday, April 1, 2018 at 12:00 AM, 38832 views
OpenTherm Library is based on OpenTherm protocol specification v2.2 and works with all OpenTherm compatible boilers. Library can be easily installed into Arduino IDE and compiled for Arduino, ESP8266 and other similar controllers. OpenTherm protocol requires simple low voltage twowire connection to boiler, but voltage levels (7..15V) still much higher than Arduino/ESP8266 levels, which requires OpenTherm Adapter.
Read MoreESP8266 Bedroom Climate Control
by Ihor Melnyk
Posted on Friday, April 29, 2016 at 12:00 AM, 17986 views
From my perspective bedroom is the most climate sensitive room, because healthy sleep is quite dependent on the bedroom environment. We spend around one third of our lives in bed so to make it more comfortable and to encourage deep and restful sleep I decided to build some monitoring and controlling device, which helps me to get right environment in bedroom without my continuous invasion.
Read More