Install Arduino IDE or PlatformIO. Install board support for ESP32 and NodeMCU (ESP8266). Install libraries needed for the sensors and modules used in the code.

IoT project "Fitness Tracker" consisting of heart rate sensor MAX30102 with NodeMCU-8266. The data is stored in Firebase Realtime DB and is displayed on web portal built with React.js.

Abstract: Today, gas leakage has become a common problem in both industrial and household sectors as it can cause explosions, fires, and toxic exposures. The real time gas alert system ensures that ...