The 38-Pin ESP32 Expansion Board with USB Type-C and Micro USB exposes its GPIO pins on two rows of 2.54mm headers – usable on a breadboard but awkward for project wiring where multiple sensors, relays, and modules connect to the same board. The 38-Pin ESP32 Expansion Board provides a dedicated base for the ESP32 38-pin module that breaks all GPIO pins out to both header pins and screw terminals simultaneously. Screw terminals clamp wires securely without soldering – a wire strips 5mm, inserts into the terminal, and the screw holds it in place, making reconnection and modification faster than soldered connections during development.
The esp32 expansion board accepts power and programming through either a Type-C or Micro USB port, giving connection flexibility depending on which cable type is available at the bench. All 38 GPIO pin positions are labelled directly on the purple PCB surface — reading the GPIO number does not require consulting a separate pinout diagram during wiring. The ESP32 module retains its WiFi and Bluetooth capability through the expansion board without modification.
Enclosure builds should account for this additional height when selecting a project box, as a case sized for a bare ESP32 board may not accommodate the terminal block height on the expansion base. The expansion board suits sensor array, relay panel wiring, and prototyping setups where frequent GPIO reconnection needed. This esp 32 expansion board 38pin is available on StemVolt, and its working on ESP32 project and IoT projects.
Related Product:
Features:
- Screw terminals clamp GPIO wires without soldering for fast reconnection
- All 38 GPIO pins labelled on purple PCB for direct identification during wiring
- Type-C and Micro USB dual port options for programming and power input
- Header pins and screw terminals provide two access methods per GPIO pin
Technical Specifications:
Applications:
- 38-Pin ESP32 Expansion Board connects multiple sensors to labelled GPIO screw terminals in IoT projects.
- ESP32 expansion board wires relay modules to screw terminals for home automation control.
- Expansion board connects RS485 and I2C modules in data logger.
- Pinout labelling guides students through sensor wiring in classroom.
- Type-C port for programs and powers dev board during development projects.
Package Includes:
- 1 x 38-Pin ESP32 Expansion Board
Fateh Singh Deol –
Speedy dispatch and anti-static packing impressed me.
Nilanjan Mukherjee –
The 38 pin expansion board arrived safely and technical support was available when needed.
Bhargavi Srinivasan –
I needed an esp32 expansion board setup for my college project and this reliable store made the purchase easy.
Devik Khanna –
Multiple payment options made checkout convenient.