WT9932C61-TINY Feature Introduction

1. Introduction

Within the wireless-tag TINY series, WT9932C61-TINY is an ultra-compact Wi-Fi 6 + BLE 5.3 development board based on Espressif’s next-generation ESP32-C61. Continuing the TINY series design philosophy of miniaturization and high integration, it incorporates the module, USB-to-UART, RGB indicator LED, and essential control buttons in a compact 23 × 38 mm footprint—making it an ideal choice for high-performance IoT applications, low-power wireless communication, and rapid prototyping.

ESP32-C61 features a single-core 32-bit RISC-V architecture running up to 160 MHz, supporting Wi-Fi 6 (802.11ax), OFDMA, MU-MIMO, TWT, and enhanced security mechanisms (TEE, PSRAM encryption). Its rich peripheral set (ETM, analog comparator, UART/SPI/I²C/ADC/PWM, etc.) enables it to meet diverse embedded requirements, from smart-home devices to sensor nodes.

As a development board suitable for learning, project validation, and small-scale product integration, WT9932C61-TINY exposes all module GPIOs and can be directly inserted into a breadboard. The onboard CH343P provides plug-and-play USB debugging. Additionally, by shorting EN and GND, the board can switch to USB-TTL mode, making it useful as a multi-purpose debugging tool.

1.1 🔧 Core Hardware Specifications

• Main Chip: ESP32-C61 (RISC-V single core, 160 MHz)
• Module: WT0132C61-S5
• Wireless: 2.4 GHz Wi-Fi 6 + Bluetooth 5.3 dual-mode
• USB-to-UART: Onboard CH343P
• Buttons: RESET, BOOT (supports download mode)
• LED: 1 × WS2812 RGB LED (IO6)
• Power Design: LDO regulator, up to 1 A output
• Interfaces: Dual-row 15P × 2 (30 pins), all GPIOs exposed
• Connectivity: USB-C, 2.54 mm headers, breadboard-friendly
• Debug Mode: Short EN to GND to switch into USB-TTL tool mode

1.2 🛠️ Design Features

• Compact Size (23 × 38 mm): Ideal for space-constrained applications; onboard USB-to-UART, buttons, and RGB LED enable rapid development out of the box.
• Full GPIO Access, Breadboard-friendly: 2.54 mm pin spacing allows quick sensor experiments and prototyping.
• Dual-purpose Board (USB-to-UART Mode): Short EN and GND to transform the board into a USB-TTL debugger.
• Robust Power Design: Supports up to 1 A, providing stable power for peripherals; onboard power LED displays real-time power status.
• Rich Peripheral Capabilities: ETM, analog comparator, UART/SPI/I²C/PWM/ADC support makes it suitable for complex application scenarios.

1.3 📡 Main Application Scenarios

1. Smart Home & Wireless Terminals: Wi-Fi 6 + BLE 5.3 is ideal for lighting control, home sensors, remote controllers, and other devices requiring stable wireless connectivity.
2. Education & Maker Projects: Complete GPIO breakout and RGB indicators make it suitable for teaching, experimentation, and rapid prototyping.
3. USB-to-UART Debugging Tool: When switched via EN–GND short, it can debug other MCUs or modules, eliminating the need for an additional USB-TTL tool.

1.4 ⚙️ Development Advantages

• USB-C single-cable debugging with onboard CH343P
• Supports ESP-IDF / Arduino / MicroPython ecosystems
• All GPIOs exposed for fast expansion with breadboards
• Wi-Fi 6 + BLE 5.3 for high-performance IoT connectivity
• Onboard RGB LED for demos and status indication
• Can switch to USB-TTL mode to increase hardware utility
• Compact and cost-effective—great for evaluation and pre-production testing

2. Pin Description

2.1 Left-Side Pins

2.1 Right-Side Pins

3. Power Characteristics

You may power the WT9932C61-TINY development board using any of the following methods:

• Through the USB Type-C connector
• By connecting the appropriate voltage to the VCC power input using Dupont wires
• By connecting the appropriate voltage to the 5V input using Dupont wires