🕒 Real-Time Clock & Calendar using PIC16F877A + DS3231 + LCD 16x2 + Buzzer Alert ⚙️💡

I just finished building a real-time clock and date-day display system powered by the PIC16F877A microcontroller!

💫 Project Highlights:

📅 DS3231 RTC Module – Tracks time, date, and day of the week with crystal precision

📟 LCD 16x2 Display – Shows real-time HH:MM:SS, DD/MM/YYYY, and Day

🔔 Buzzer – Turns ON & OFF automatically every 5 seconds as an alert

⚡ PIC16F877A – The heart of the system, coded in Embedded C using MPLAB IDE + Hi-Tech PICC Compiler

🧠 Core Functionalities:

Live update of time, date, and day from DS3231

LCD auto-refresh for real-time display

5-second buzzer timer interrupt control

Reliable I²C communication between RTC & MCU

🔍 Applications:

✅ Digital wall clocks

✅ Time-based control systems

✅ Industrial or lab alert systems

👨‍💻 A fun and practical way to explore real-time interfacing and precision timing with embedded C!