Comparison of CoAP and HTTP Protocol Performance on ESP32 Microcontroller as an Air Quality Monitoring IoT Device

The Internet of Things (IoT) relies on efficient data communication protocols like CoAP and HTTP. This study compares the performance of these protocols using an ESP32 microcontroller with MQ7 and DHT11 sensors for air quality monitoring. Key metrics assessed include network performance, power consumption, and memory usage. Wireshark analysis reveals CoAP has 80% higher delay and consumes 4% more power than HTTP, though CoAP offers 3% better storage efficiency. HTTP, on the other hand, provides 27% higher throughput. Both protocols show similar reliability and memory usage.