Vermes
Advanced Member level 4
This is a readable, simple clock with temperature, which can be used at home. The device is based on microcontroller Atmega16 clocked by 16MHz and supported by RTC PCF8583. DS18B20 is responsible for measuring the temperature. It communicated with the processor via 1-wire interface. The clock is equipped with graphical display from Bolymin BG12864D with a resolution of 128x64, controlled by Toshiba controller T6963C.
The clock is equipped with a battery maintaining the RTC with a capacity of 60mAh, what at consumption of 30uA gives about 100 days of continuous operation of the clock.
Alarm time is stored in the EEPROM, so when the supply is back, the alarm time remains the same.
There are two buttons on the left, which can be used for setting the time, date and alarm time.
The device is closed in a Z housing.
Pictures:
Link to original thread (useful attachment) - Domowy zegarek z pomiarem temperatury