sam massfeller

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sam massfeller

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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, I?C (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

454 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

454

Published: Jun 23,2025

Standard PCB

Download Gerber file 10

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