Clock for the car – own construction

[Vermes]

The system is based on microcontroller Atmega16. PCF8583 clock was used to countdown the time, and DS18B20 as temperature sensors. All the information are displayed on the alphanumerical display 2x16 characters with RGB backlight.

The clock has the following functions:

• clock in 24h format – HH:MM:SS
• measures both internal and external temperature and displays it to the nearest 0,1 degree Celsius
• few colours of the display backlight depending on your needs
• remembers all the settings including the time after disconnecting the accumulator
• time is displayed in the upper row of the display, while the internal and external temperature in the bottom row
• setting of the backlight colour and the time is done in a simple way using 3-buttons keypad

The system has its own back-up, so even if you disconnect the accumulator, then after reconnecting it, you will not have to set the time on the clock. The highlight colour is automatically stored in the EEPROM of the microcontroller, so it is remembered even after the power is off.
Aperture in the display was made of a thin plexiglass and covered with the matt black tape. The holder of the display was made of aluminum sheet.

Link to original thread (useful attachment) – Zegarek do samochodu

 

[tpetar]

Very nice. Where can be found project files if available for public ?