sam massfeller

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sam massfeller

UNITED STATES OF AMERICA
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Components

	ESP32-S3-WROOM-1-N8R2	x 1
	LTL-307YE Lite-On Inc.	x 1
	TS-109-T-AA Samtec Inc.	x 1
	USB_C	x 1

Tools, APP Software Used etc.

arduino IDE

Arduino

Description

ESP32 dev mini.kicad_pcb

ESP32-S3 Mini Dev Board – Compact, Powerful, and Pin-Rich

A minimal yet powerful ESP32-S3-WROOM-1 development board, designed with all the essential pins grouped together for easy prototyping and embedded projects. Features a clean layout, plenty of GPIO, and all the critical power, flash, and interface pins available — no fluff, just what you actually need.

Based on ESP32-S3-WROOM-1 (with Wi-Fi + BLE 5)
All important GPIOs, UART, I²C (SDA/SCL), and SPI (MISO/MOSI/SCK/CS) broken out
Compact and breadboard-friendly
Built-in 3.3V regulator and decoupling capacitors
Reset and boot mode support via EN and IO0 (manual or auto-reset capable)
Ideal for low-cost projects, wearables, automation, or IoT builds
Price Range: $15–20 total including components
Perfect for: Makers, students, and tinkerers who want full ESP32-S3 power without the bulk.

**Requires AMS1117-3.3V voltage regulator for stable power input (labeled on board for easy wiring)

Code

blink.ino

C/C++

#define LED_PIN 2  // GPIO2

void setup() {
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_PIN, HIGH);  // Turn LED on
  delay(500);                   // Wait 500ms
  digitalWrite(LED_PIN, LOW);   // Turn LED off
  delay(500);                   // Wait 500ms
}

Schematic and Layout

dev esp wire.png

Download Gerbers

Jun 23,2025

695 views

ESP32 dev mini.kicad_pcb

2 Layers PCB 36.6 x 47.9 mm FR-4, 1.6 mm, 1, HASL with lead, Black Solder Mask, White silkscreen

A compact ESP32-S3 dev board with a built-in OLED display — no extra libraries needed. Just plug in, code, and display. Perfect for fast pro

695

Published: Jun 23,2025

Standard PCB

Download Gerber file 12

PCBWay Donate 10% cost To Author

Only PCB

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Project images are for reference only. Actual production is based on the manufacturing files on the project page. Please review the designer's notes (e.g., PCB thickness) and select the appropriate options. PCBWay is not responsible for issues caused by unsuitable parameter selections.
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