The ESP-WROOM-32 (30-Pin) CH9102 Development Board is a compact, power-efficient platform designed for IoT development, wireless communication, and embedded prototyping. Built around the ESP32-WROOM-32 module and equipped with the CH9102 USB-to-serial chip, this board delivers dual-core processing power, integrated WiFi and Bluetooth connectivity, and stable programming support in a streamlined 30-pin form factor.
The ESP32-WROOM-32 module at the core of this board features a dual-core 32-bit microprocessor running at up to 240 MHz, with 4 MB of SPI flash memory for program and data storage. It supports WiFi 802.11 b/g/n and Bluetooth v4.2 BR/EDR and BLE, providing versatile wireless options for a wide range of applications, from smart home devices to industrial IoT gateways.
This version is equipped with the CH9102 USB-to-serial chip, a mature and widely supported interface solution known for its stability and high-speed data transfer capabilities. The CH9102 handles programming and serial communication over the Micro USB port, which also serves as the board’s power supply. It requires a one-time driver installation on most systems, after which it works smoothly with development environments including Arduino IDE, ESP-IDF, and PlatformIO.
The ESP32 is well known for its ultra-low power consumption capabilities, making this board ideal for battery-powered and energy-conscious applications. It supports multiple power modes including Active, Modem-sleep, Light-sleep, and Deep-sleep, allowing developers to optimize power usage for their specific application. In Deep-sleep mode, current consumption can drop to as low as 10 µA, significantly extending battery life in remote sensor and monitoring applications.
The 30-pin design provides a balanced set of I/O pins on standard 0.1-inch headers along both sides of the board. The most commonly used GPIOs are exposed, offering a compact footprint while still supporting a wide range of peripherals. The headers are pre-soldered and ready to use without any assembly required.
The board includes a reset button (EN) and a boot button (Boot) for easy firmware flashing and operation. Whether you are a beginner exploring IoT concepts, a hobbyist building connected projects, or a business deploying wireless solutions, the ESP-WROOM-32 (30-Pin) CH9102 Development Board offers a reliable, well-supported platform that balances performance, connectivity, and power efficiency.
Features
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ESP32-WROOM-32 module — dual-core 32-bit microprocessor with integrated WiFi and Bluetooth.
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CH9102 USB interface chip — stable, high-speed USB-to-serial communication with mature drivers.
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Ultra-low power consumption — multiple power modes including Deep-sleep for battery-powered applications.
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30-pin welded design — compact footprint with pre-soldered headers, ready to use without assembly.
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Dual-core processing — up to 240 MHz clock speed for demanding applications.
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Integrated WiFi — 802.11 b/g/n support for wireless networking and IoT connectivity.
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Bluetooth v4.2 with BLE — supports both classic Bluetooth and Bluetooth Low Energy.
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Essential pin breakout — the most commonly used GPIOs exposed on standard 0.1″ headers.
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On-board buttons — EN (reset) and Boot buttons for easy firmware flashing.
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4 MB SPI flash — ample program and data storage for most projects.
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Breadboard compatible — standard header spacing allows direct mounting on breadboards.
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Module | ESP32-WROOM-32 (ESP-32S) |
| 2 | USB Interface Chip | CH9102 |
| 3 | Processor | Dual-core 32-bit, up to 240 MHz |
| 4 | Flash Memory | 4 MB SPI Flash |
| 5 | Wireless | WiFi 802.11 b/g/n, Bluetooth v4.2 BR/EDR + BLE |
| 6 | Operating Voltage | 3.3V logic; 5V via Micro USB |
| 7 | USB Connector | Micro USB |
| 8 | Pin Count | 30 pins (welded headers) |
