Astronauts work in extremely harsh conditions during space missions, and ongoing health monitoring is crucial to both mission success and survival. Conventional spacesuits lack sophisticated biomedical monitoring and only offer rudimentary life-support feedback. To measure, process, and communicate an astronaut's physiological and environmental characteristics in real time, this project suggests an Internet of Things-based Space Suit Health Monitoring System. A low-power microcontroller unit (MCU), such as the ESP32 or Arduino, interfaces with a number of embedded sensors, including heart rate, body temperature, oxygen saturation (SpO₂), and suit pressure sensors. For ongoing monitoring, data from these sensors is analyzed and wirelessly sent to a ground station or mission control using Wi-Fi or radio frequency communication. An IoT dashboard or monitoring software visualizes the collected data, allowing for quick action in the event of anomalous conditions.

 This system prioritizes dependability in harsh environments, low power consumption, and compactness.  By offering real-time health information and predictive alerts, it improves astronaut safety by assisting in the prevention of dangerous circumstances like hypoxia, hyperthermia, or suit malfunction.  The suggested concept shows how IoT technologies and embedded electronics can greatly improve human spaceflight health monitoring.

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