Multi-Channel IoT Relay Controller

Project overview

ESP32-based wireless controller providing multiple screw-terminal outputs for external loads.

Engineering approach

Connected products live or die on power efficiency and radio performance, so RF-aware layout and antenna matching are treated as first-class design constraints. On this board, that translates into a component set built around 4L and ESP32, with layout and stack-up decisions driven by radio layout, antenna placement, power budget, and reliable wireless connectivity in real-world conditions.

Technical specification

Engineering focus

This portfolio project demonstrates CircuitNexa's electronics engineering and PCB design work in the iot space. The design shown here is part of a broader portfolio spanning schematic capture, PCB layout, embedded firmware, prototyping, and support through to manufacturing.