Building a Low-Cost IoT Edge Node with ESP32: Lessons from Real Deployments

I’ve been working on a lightweight IoT edge node using the ESP32 for collecting environmental and motion data in an industrial setting. The goal is to keep it low-power, scalable, and MQTT-compatible for integration with existing cloud platforms. I recently followed this practical guide on that walks through how to set up an ESP32 for MQTT data publishing, which helped me solve some initial bottlenecks: https://www.theengineeringprojects.com/2021/11/esp32-mqtt.html

I also looked into Eclipse Mosquitto’s broker configuration and drew inspiration from Balena’s edge device management patterns. I’m curious to know how others in the community have structured lightweight, reliable data pipelines for industrial or environmental IoT using open hardware. What did you learn about power, security, or real-world connectivity challenges?