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ESP32 ESP8266 Expansion Board Module – the ultimate companion for your ESP32 development board. Designed with 30‑pin and 38‑pin GPIO compatibility, this module bridges the powerful ESP32 core with the versatile ESP8266 Wi‑Fi module, enabling dual‑chip connectivity and expanded I/O options.
Product Overview
Whether you’re prototyping a smart home hub, building a wireless sensor network, or creating an IoT gateway, this expansion board seamlessly integrates the ESP8266 into your ESP32 system. With a compact 1‑inch footprint and a robust pin‑to‑pin layout, it’s perfect for both hobbyists and professional developers.
Key Features
- Dual‑chip architecture: ESP32 + ESP8266 for simultaneous Wi‑Fi and BLE capabilities
- 30‑pin & 38‑pin GPIO compatibility – flexible pin mapping for diverse projects
- 1‑inch board size – ideal for space‑constrained designs
- High‑speed UART, SPI, I2C, and PWM interfaces for versatile connectivity
- Robust 3.3V power supply with built‑in voltage regulation
- Pre‑tested with popular ESP32 development boards (e.g., ESP32‑DevKitC, NodeMCU)
- Clear labeling and color‑coded pins for easy soldering and debugging
- Compatible with Arduino, ESP-IDF, and MicroPython environments
Technical Specifications
• Microcontroller: ESP32 (dual‑core Xtensa LX6) + ESP8266 (802.11 b/g/n Wi‑Fi)
• Operating Voltage: 3.0 V – 3.6 V (3.3 V typical)
• UART: 2× (UART0, UART1)
• SPI: Full‑duplex, up to 40 MHz
• I2C: Standard & Fast mode (up to 400 kHz)
• GPIO: 30/38 pins (GPIO0‑GPIO29, GPIO30‑GPIO37)
• Dimensions: 25 mm × 25 mm × 1.6 mm (1 inch square)
• Package: SMT, solder‑through
Why Choose This Module?
By combining the power of the ESP32 with the lightweight ESP8266, you gain:
- Enhanced network flexibility – Wi‑Fi + BLE in one board
- Reduced board cost – no need for separate Wi‑Fi modules
- Streamlined firmware – single code base for dual‑chip operation
- Future‑proof design – supports latest ESP-IDF updates
Applications
• Smart home controllers and automation hubs
• Wireless sensor nodes and telemetry systems
• IoT gateways and edge‑computing devices
• DIY robotics and remote‑control projects
• Educational kits for embedded systems learning
Upgrade your ESP32 development workflow with the ESP32 ESP8266 Expansion Board Module – the compact, feature‑rich solution that delivers dual‑chip connectivity and unmatched flexibility for any IoT project.
Price: Original price was: $ 8.96.$ 2.95Current price is: $ 2.95.