Vermes
Advanced Member level 4
The system consists of a microcontroller Atmega8 with a graphic display with a resolution of 128x64 pixels and controller KS0108B (HD61202/3). A popular chip sensor DS18B20 was used as a temperature sensor. The system measures the temperature and stores the measurement results of the last 24 hours. Record of temperature takes place every 15 minutes, giving 96 measurements per day.
Besides the current temperature (Ta), the average temperature during the day (Tavg) is displayed, minimum (Tmin) and maximum temperature (Tmax) are stored. In addition, a daily temperature chart is displayed, giving a graphical representation of temperature changes during the last 24 hours. There is no resistor 10K in the board, it should be pulled up to +5V.
Link to original thread (useful attachment) – Dobowy rejestrator temperatury Atmega8 + LCD 128x64