Vermes
Advanced Member level 4
This device can be useful when you have too high temperature in your house in winter.
When the temperature drops, radiators heat up too much. If you leave the valve open for a night, in the morning the temperature at home can be greater than 30 degrees Celsius.
DC engine with a gear and rotary potentiometer was used, so the microcontroller has information about the position of the valve at any time. The result was similar to the servo-motor.
DS18B20 sensors measure the temperature inside, outside and the radiator's temperature. You can make a program, that on the base of those three data set the position of the servo to keep the set temperature in a room.
More information and PCB schemes can be found at **broken link removed**.
Link to original thread (useful attachment) – **broken link removed**
