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The microcontroller monitors the Analog Comparator Flag (ACF) in the ACSR register. When the LM35 voltage exceeds the reference voltage, the flag sets, tripping the relay. 3. Advanced Project: PC-Controlled Home Automation System
Creating decorative lighting effects or scrolling message displays using simple C or Assembly code. at89c2051 projects
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Measure ambient temperature and display it on an LCD or 7-segment display.
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With only 15 programmable I/O lines, you may need to use multiplexing for displays or shift registers (like the 74HC595) if your project requires many LEDs or inputs.