(Translated from Russian)
Further development of the project https://github.com/pav2000/Podval.
The principle of operation remained the same – The idea of monitoring the humidity of the basement was spied on http://geektimes.ru (http://geektimes.ru/post/255298/) The whole idea is to measure the temperature and relative humidity in the basement and on the street, Based on the temperature and relative humidity, calculate the absolute humidity and decide whether to turn on the exhaust fan in the basement.
The theory for the calculation is stated here – https://carnotcycle.wordpress.com/2012/08/04/how-to-convert-relative-humidity-to-absolute-humidity/
The hardware has been completely redesigned. Now using STM32 and wiznet w5500 network chip.
On the chip itself, a simple web server was raised, through which the device is configured and controlled. When developing this block, I planned to make a universal module for home automation, and put redundancy in the circuit for the implementation of future devices. The block itself is implemented on the maple mini board (STM32F103CBT6).
- Original Link (Russian): https://github.com/pav2000/Dehumidifier-2.0