Opstep Engineering

This system continuously measures the freezer’s internal temperature usingthe DS18B20 and displays it on a 16×2 LCD. If the temperature exceeds a predefined critical threshold (e.g., above 0°C), an alarm (buzzer/LED) is activated, alerting you to a potential problem

This Pulse Oximeter design using the MAX30102, ATmega328P, and associated components is a reliable and cost-effective solution for building a portable health monitoring device. Whether you're a hobbyist, student, or professional working on embedded systems, this project offers an excellent way to explore how pulse oximeters work and gain hands-on experience in designing embedded medical devices.