Key Takeaway: The right industrial IoT gateway depends on environment and workload — a general-purpose Pi is fine for a bench prototype, but a hardened STM32 controller or DIN-rail industrial…
Key Takeaway: UART serial communication is the simplest and most widely used two-wire protocol between microcontrollers and industrial devices — once you appreciate TX/RX crossover wiring, shared ground, and matching…
Key Takeaway: The ESP32 makes an ideal low-cost industrial IoT gateway for bridging Modbus RTU/TCP field devices to MQTT cloud platforms. This guide walks through hardware setup, firmware architecture, and…