Custom ESP32-S3-WROOM-1 Development Board

Technology Stack

The Problem

Raw ESP32-S3 modules require complex supporting circuitry to function as development boards. Commercial dev boards often lack customization options, proper labeling for beginners, and visual indicators.

Technical Implementation

Designed complete schematic and PCB layout from scratch using KiCad, converting the raw ESP32-S3-WROOM-1 N16R8 module into a fully functional development board. Implemented proper power regulation circuitry with carefully selected resistors and capacitors for stable current flow and voltage regulation. Added 3 RGB LEDs for status indication and visual feedback, along with 2 tactile push buttons for user input and reset functionality. PCB features clearly labeled pin names silk-screened directly on the board for easy prototyping and real-world use. Included custom branding logo on the board. The design follows ESP32-S3 reference schematics while adding practical improvements for development workflow.

Reflective Analysis & Growth

This project deepened my understanding of microcontroller hardware design beyond simple breakout boards. Working with the raw ESP32-S3 module taught me about critical supporting circuits—power decoupling, reset logic, and boot mode selection—that are often hidden in commercial boards. The component selection process enhanced my knowledge of passive components and their impact on circuit stability. Designing user-friendly pin labeling showed me the importance of considering end-user experience in hardware design. Currently, this project exists as a complete schematic and PCB design, but I haven't yet recieved and tested the PCBA board.