Hardware design of electronic notice board
Asit Baran Chanda · 2014
In this project a hardware is designed to measure the temperature and humidity and log the data in a SD card. At the core`e of the circuit is the ARDUINO UNO microcontroller which controls all its functions. A humidity and temperature sensor DHT11 is used for sensing the humidity and temperature of the environment and the system displays the humidity and temperature on an LCD in the range of 20%RH to 90%RH and 0°C to +50°C respectively. This humidity and temperature values are then programmed to log and saved in an external SD card as text file . The logged data can be seen by opening the text file in a computer.