Designed and developed a custom ESP32-based IoT control PCB for wireless embedded applications requiring data logging, communication, and compact system integration. The board includes an ESP32 wireless module for WiFi/Bluetooth communication along with additional RF modules and supporting circuitry for extended connectivity options.
The design features a USB-C interface for power and programming, onboard voltage regulation circuitry, boot and enable buttons for firmware flashing/debugging, status indication LEDs, microSD card support for local data storage, filtering capacitors, protection components, and multiple GPIO expansion interfaces for external sensors and peripherals.
Special attention was given to PCB routing quality, power integrity, grounding strategy, RF section placement, and component spacing to improve overall stability and manufacturability. The layout was optimized for compact size while maintaining reliable signal routing and clean power distribution across the board.
The project included:
- Schematic design
- Multilayer PCB layout
- ESP32 integration
- USB-C power/programming interface
- MicroSD card interface
- RF and wireless module integration
- Power regulation and filtering
- Boot/reset circuitry
- Manufacturing-ready Gerber files
- BOM with assembly components
- CPL/Pick and Place files for JLCPCB assembly
The final PCB was prepared for prototype manufacturing and future firmware integration for IoT monitoring and control applications.