How to Build an IoT Sensor Project with Node-RED, InfluxDB, and Raspberry Pi

This article provides a step-by-step guide on how to build an IoT sensor project using Node-RED, InfluxDB, and Raspberry Pi. The hardware setup includes a Raspberry Pi with peripherals, GPIO HAT (optional), breadboard, ultrasonic sensor, LED light, resistors, and jumper wires. The software setup involves installing InfluxDB Cloud and Node-RED on the Raspberry Pi. Two flows are created in Node-RED: Flow 1 turns an LED on/off from Node-RED and saves the data in the InfluxDB Cloud bucket, while Flow 2 connects an ultrasonic distance sensor to the Raspberry Pi and calculates distances using the classic mathematical formula. The article concludes by encouraging readers to explore further possibilities with IoT and share their creations.