Baguette S3 - ESP32-S3 Prototyping Board

The Baguette S3 is a compact ESP32-S3 development board designed for prototyping ESP-based projects on a breadboard and is great as a general development board too!

We designed this because once fitted to a breadboard, most traditional microcontroller boards usually leave very little space for your project. The Baguette sits on one side, giving you GPIO pins conveniently in order, in a single row, ready to push into a breadboard. It fits perfectly on ahalf-size breadboard, using all 30 pins on one side – and it’s even more useful on afull-size version!

We’ve used an ESP32-S3-MINI-1-N8 module on the Baguette S3, an Xtensa dual-core 32-bit LX7 microprocessor with 8MB Flash, offering 2.4GHz Wi-Fi (802.11b/g/n) and Bluetooth 5 onboard. The GPIO pins are conveniently laid out in order, in a single row, ready to push into a breadboard, including power pins, UART (RX, TX) and I2C (SDA, SCL).

The board features USB-C for power and programming, a Qwiic port for connecting Qwiic add-ons (3.3V only), an onboard RGB LED (WS2812C), MicroSD card slot for data logging projects, and RESET and BOOT buttons. We also added a few quality-of-life touches, like the underside soldering pads as an easier way to solder/re-solder bare wires, M2.5 mounting holes, and high-quality ENIG gold plating to resist corrosion.

The Baguette S3 is available in two configurations– unsoldered with a loose male header strip in the bag (great for embedding into a project), or with a pre-soldered male header (perfect for breadboarding). Select an option before adding to your cart.

Our online guide will get you up and running, showing you how to use the features in Arduino IDE and ESPHome via Home Assistant. We now also offer a smallerBaguette C3!

USB-C cable and breadboard not included.

Why ‘Baguette’?

Let’s talk about the name, shall we?

We designed this ‘stick’ primarily for breadboard usage however ‘BreadStick’ was already being used by other products, so we got our bread-based thinking caps on. Someone suggested ‘Baguette’ as a fitting alternative –we all laughed at them – and then (most likely due to a lack of better options) finally agreed that it works well!

Key Features

Breadboard-lovin’ dev boarddesigned for prototyping projects

ESP32-S3 microcontroller with WiFi and Bluetooth

GPIO pins in order, in a single row perfect for breadboard usage

Qwiic port for connecting Qwiic/STEMMA QT modules

RGB LED for adding blinky to your projects

MicroSD slot add data storage to your projects

RESET and BOOT buttons because…you need them

Underside solder padsfor easy wire soldering and re-work

M2.5 mounting holesforfiddly-freemounting

ENIG (Gold) PCB platingfor oxidation resistance and durability

30-pin 2.54mm male header stripincluded, with a pre-soldered option available

Board Layout

Specifications

*We state a 500mA minimum because most USB sources offer at least this, but in reality, the board will use a lot less (depending on what you are doing with it).

** Powering via 3.3V requires a well-regulated 3.3V power source. We don’t recommend powering the board this way – best to stick to the 5V pads and let that run through the onboard ME6211 LDO regulator.

Resources

• Baguette S3 User Guide
• Vibe Coding the Baguette S3: Web Server GPIO and LED Control
• 3D Model (STEP)

Community resources

• Big Les: CircuitPython with the Baguette (includes examples)

Datasheets

• ESP32-S3-MINI-1-N8
• WS2812C RGB LED
• Microne ME6211C33M5G-N LDO Regulator

Dimensions

Note: top corner radius is 2.25mm, bottom corner radius is 1mm.

Package Contents

• 1x Baguette S3 – ESP32-S3 Development Board
• 1x 30-pin 2.54mm male header strip (loose or pre-soldered, select an option before adding to cart)

USB-C cable and breadboard not included