Home > Home/Entertainment, Microcontrollers, Power Units, Sensors/Detectors > Digital home/car clock with 100 alarms and temperature sensing

Digital home/car clock with 100 alarms and temperature sensing

2006, private project, 1 developer
result: developed & soldered, works but FW is not finished
dev. OS: Windows XP; MC: ATmega8; languages: C; tools: PN, AVR C cross-compiler

This project has common firmware for 3 following hardware implementations:
- Car clock with both red and green screens (watch its movie CarThermoClock_2Lines-Vid01);
- Large screen home clock;
- Large bi-color screen home clock: (red&green) segments indicator to set any composite color lighting (watch its movie RGThermoClock-Vid01).

Common features are:
- auto brightness (16 levels) controlled by light sensor with manual level correction;
- 0,1V step backup battery or car accumulator voltage indicator;
- 1 temperature sensor;
- auto off LED screen on car key or wall power loss with 2 seconds lighting on button pressing;
- auto night mode: screen is off until button click or infrared signaling by any remote controller with following 2 seconds indicating;
- 100 alarms with the set of one-tone melodies;
- week basis time alarms (with “regular” or “once” mode);
- sound effects highlighted key presses browsing;
- independent 8 levels volume control of alarm and key press;
- accurate clock tuning (to 2 seconds per month error);
- switched voltage stabilizer (with 7.5V to 20V input).

Home/Entertainment, Microcontrollers, Power Units, Sensors/Detectors

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