ESP32-S3 GPIO Expansion Board Breakout Module for 44-Pin Dev Boards

Specifications:

• Compatibility: 44-Pin ESP32-S3 Development Boards (2x22 pin layout)
• Expansion Style: GVS (Ground, Voltage, Signal) layout for all GPIOs
• Power Input Interface: DC Barrel Jack (Center-Positive) or via ESP32 USB
• Onboard Regulation: Dual electrolytic capacitors (100µF 16V) with linear regulator
• Header Color Coding: Yellow (Signal IO), Red (VCC / Power), Black (GND)
• Power Output Pins: Multiple dedicated 3.3V, 5V, and GND rows
• PCB Material: High-quality double-sided FR4 (Black)
• Mounting: 4x M3 standoff holes
• Dimensions: 80mm × 80mm

Unlock New Capabilities

• If you've already experimented with... If you've already experimented with basic ESP32-S3 projects on a standard breadboard, you know how quickly things get messy. Running out of 3.3V power pins for your sensors or struggling with loose, intermittent jumper wire connections are common headaches that stall progress when moving from a simple test to a complex prototype.
• This ESP32-S3 GPIO Expansion Board unlocks... This expansion board unlocks complex, multi-sensor IoT nodes, advanced robotics controllers, and smart home hubs. By providing dedicated Ground, Voltage, and Signal (GVS) pins for every single GPIO, you can build reliable systems that require multiple servos, displays, and high-current sensors without the voltage drop or wire-tangle of a traditional breadboard setup.
• Effort Level & Minimum Hardware
• Effort Level: Beginner

Minimum hardware to get started:

• 44-Pin ESP32-S3 Development Board — The expansion board acts as a dock; it requires a compatible 44-pin ESP32-S3 microcontroller to actually process code and drive the pins.
• DC Power Supply (e.g., 5V/9V Adapter) — Essential if you plan to power multiple servos or high-draw sensors, as the microcontroller's USB port cannot supply enough current for heavy loads.

Included in the Box:

• 1× ESP32-S3 GPIO Expansion Board 

Frequently Asked Questions

• Will this work with an ESP32-WROOM-32 38-pin board?
  No, this board is specifically designed for 44-pin ESP32-S3 development boards with a 2x22 pin layout.
• Can I use this with an ESP8266 NodeMCU?
  No, the pin spacing and width are entirely different, meaning the ESP8266 will not fit into the female sockets.
• Does it support ESP32-S3 boards with built-in displays?
  It depends on the specific display board's header layout; if it doesn't match the standard 2x22 44-pin footprint, it will not seat correctly.
• Is this compatible with Arduino IDE and MicroPython?
  Yes, the expansion board is purely a hardware breakout and does not interfere with whatever software platform your microcontroller is running.
• What is the maximum voltage I can apply to the barrel jack?
  While typical onboard linear regulators can handle up to 9V or 12V, we strongly recommend a regulated 5V DC adapter to minimize heat dissipation.
• Can I power 5V sensors from the red VCC pins?
  Yes, the board routes the 5V input rail to specific header pins, but ensure you check the silkscreen to differentiate between the 5V and 3.3V rows.
• How much current can the expansion board handle?
  The copper traces and onboard regulator are generally rated to handle around 1A to 1.5A safely; do not run high-current motors directly through it.
• What does the GVS layout mean?
  GVS stands for Ground (Black), Voltage (Red), and Signal (Yellow), which matches standard servo and sensor 3-pin cables for direct plug-and-play wiring.
• Which GPIO pins are safe to use as outputs?
  Avoid using strapping pins (like GPIO 0) during boot, but most other yellow signal pins are available for general input/output.
• Do I need a logic level converter for I2C screens?
  If the screen is strictly 5V logic, you should use a level shifter, but many modern I2C displays accept the ESP32-S3's 3.3V logic signals directly.
• Do I need a special library to use this expansion board?
  No, since it is a passive hardware extension, you use standard Arduino or MicroPython code exactly as you would on a breadboard.
• How do I define the pins in Arduino IDE?
  Simply use the GPIO number printed on the expansion board's silkscreen (e.g., pinMode(4, OUTPUT); for IO4).
• Are the analog pins (ADC) broken out as well?
  Yes, all available ADC-capable pins from the 44-pin ESP32-S3 are broken out to the signal headers.