The project consists of developing an electronic system for monitoring the environmental conditions in a baby's room, using the ATMega328P Xplained mini development board.

The main ambition behind developing this baby monitor system is to create a reliable, low-cost, and efficient solution for monitoring a baby’s environment and well-being in real time.

Modern parents often rely on expensive commercial devices to ensure their child’s safety. This project aims to demonstrate that a similar level of functionality can be achieved using accessible components and embedded systems knowledge. By integrating environmental sensing (temperature and humidity) with sound detection, the system provides both preventive monitoring and immediate alerts in case of unusual situations, such as excessive noise or crying.

Another key objective is to enhance parental awareness without requiring constant physical presence. The system acts as an assistant that continuously supervises the room conditions and notifies caregivers when intervention may be needed.

From an educational perspective, the project also reflects the ambition to apply theoretical knowledge in embedded systems, electronics, and programming to a real-world application. It combines multiple subsystems—sensor data acquisition, signal processing, user interface, and alert mechanisms—into a cohesive and practical solution.

Ultimately, the project emphasizes safety, accessibility, and real-time responsiveness, showcasing how technology can be used to improve everyday life in a meaningful way.

• Monitoring temperature and humidity using the DHT11 sensor
• Displaying values on an LCD 1602 screen
• Detecting ambient noise using a microphone module
• Identifying baby crying based on a predefined noise threshold
• Real-time alerting through:
  • buzzer (audio alert)
  • RGB LED (visual alert)

The device uses a DHT11 sensor to continuously measure temperature and air humidity, displaying these values on an LCD 1602 screen to allow monitoring of an optimal microclimate.

At the same time, a microphone module monitors the sound intensity in the room, being programmed to detect the baby's crying when a predefined noise threshold is exceeded.

When crying is detected, the system immediately triggers:

• an audio alert using a buzzer
• a visual notification using an RGB LED

This mechanism provides parents with an efficient real-time alert system.

List of components: