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ESP32 ESP-WROOM-32 38-Pin GPIO Breakout Expansion Board — Narrow, Breadboard Compatible
ESP32 ESP-WROOM-32 38-Pin GPIO Breakout Expansion Board Narrow, Breadboard Compatible
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ESP32 ESP-WROOM-32 38-Pin GPIO Breakout Expansion Board — Narrow, Breadboard Compatible
Simplify your ESP32 ESP-WROOM-32 prototyping with this narrow GPIO breakout expansion board. Designed to fit the standard 38-pin ESP32 DevKit, this board breaks out all GPIO pins to clearly labeled headers while maintaining a narrow profile that fits in a standard 830-point breadboard — leaving accessible rows on both sides for component connections. The double-layer FR4 PCB with silkscreen pin labels eliminates the need to constantly reference a pinout diagram.
Key Specifications
| Parameter | Value |
|---|---|
| Compatible Module | ESP32 ESP-WROOM-32 DevKit (38-pin) |
| Form Factor | Narrow — fits 830-point breadboard with accessible rows |
| PCB | Double-layer FR4 with silkscreen pin labels |
| GPIO Pins | All 38 pins broken out and labeled |
| Connections | Pin headers + optional screw terminals |
| Origin | Mainland China |
ESP32 ESP-WROOM-32 Key Features (Module)
| Feature | Specification |
|---|---|
| Processor | Dual-Core Xtensa LX6 @ 240MHz |
| WiFi | 802.11 b/g/n (2.4GHz) |
| Bluetooth | BT 4.2 Classic + BLE |
| SRAM | 520KB |
| Flash | 4MB |
| GPIO | 34 programmable pins |
| ADC | 12-bit, 18 channels |
| DAC | 2× 8-bit |
| Interfaces | I²C, SPI, UART, I²S, CAN, Touch, PWM |
| Deep Sleep | <10µA |
Why Choose This Breakout Board?
- Narrow breadboard-compatible — fits in 830-point breadboard leaving usable rows on both sides
- All 38 pins labeled — silkscreen labels eliminate constant pinout diagram lookups
- Double-layer PCB — cleaner routing, better signal integrity than single-layer boards
- Optional screw terminals — secure wire connections without soldering for rapid prototyping
- No soldering required — plug ESP32 DevKit into the breakout board and start prototyping
Typical Applications
- Smart home automation — breadboard prototype for Home Assistant, MQTT, and relay control
- IoT sensor hub — connect multiple I²C, SPI, and UART sensors without wire confusion
- Breadboard prototyping — rapid circuit development without custom PCB
- ESP32 development without soldering — ideal for beginners and quick proof-of-concept builds
- Education & workshops — clear pin labels for teaching ESP32 GPIO concepts
FAQ
Q: Does the ESP32 module come included?
A: No. This is the breakout expansion board only. The ESP32 ESP-WROOM-32 DevKit (38-pin) is sold separately and plugs into this board.
Q: Will this fit in a standard 830-point breadboard?
A: Yes. The narrow design leaves at least 1–2 rows accessible on each side of the breadboard for component connections.
Q: Are screw terminals included?
A: Screw terminal availability depends on the variant. Check the product variant description for screw terminal vs pin header options.
Package Contents
- 1× ESP32 ESP-WROOM-32 38-Pin GPIO Breakout Expansion Board
- ESP32 DevKit module NOT included
