آر اف (فرکانس رادیویی) و بی‌سیم ماژول‌ فرستنده‌گیرنده و مودم آر اف

Product Attributes

Introduction

This module features a built-in offline voice chip supporting up to 50 offline voice command recognitions, enabling fast and accurate user voice command recognition without network connectivity. It operates stably in poor or no network environments, delivering responsive intelligent services. The module supports large language model execution and seamlessly integrates with various advanced large language models, leveraging their powerful language understanding and generation capabilities to enable smarter, more natural human-machine interaction — including complex Q&A, text content generation, and multi-turn fluid conversations — providing users with a more intelligent and efficient service experience. The core Wi-Fi processor adopts the cost-effective ESP32-C2 chip, which integrates an enhanced RISC-V 32-bit core processor and on-chip SRAM in a compact package. The ESP32-C2 offers full Wi-Fi networking functionality and can operate standalone or as a slave device running on another host MCU. The module supports standard IEEE 802.11b/g/n/e/i protocols and a complete TCP/IP stack, allowing users to add network connectivity to existing devices or build standalone network controllers. It provides a rich set of interfaces for connecting various sensors, controllers, and other devices, enabling device interconnection and collaborative operation. The module also offers excellent scalability, allowing easy upgrades and feature expansion to accommodate future technology developments and application requirements, ensuring a solid foundation for the continued evolution of smart devices.

Features

• Built-in AI voice LLM, plug-and-play
• Built-in offline voice wake words, up to 50
• ESP8684H4 + MCU chip
• Module dimensions: 18mm × 25.5mm × 3mm
• 32Mbit onboard flash
• 576KB ROM
• 272KB SRAM
• IEEE 802.11 b/g/n
• Operating channel center frequency range: 2412 ~ 2484MHz
• 20MHz bandwidth support in 2.4GHz band
• 1T1R mode, data rate up to 72.2Mbps
• Frame aggregation TX/RX A-MPDU, TX/RX A-MSDU
• Automatic beacon monitoring (hardware TSF)
• 3× virtual Wi-Fi interfaces
• Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode
• Bluetooth LE: Bluetooth 5, Bluetooth mesh
• Data rates: 125 Kbps, 500 Kbps, 1 Mbps, 2Mbps
• Advertising extension / multi-advertising
• RISC-V 32-bit core, 240MHz clock speed, FPU support
• Offline speech recognition with built-in noise suppression
• Audio decoding: MP3, WAV, WMA, MP4, M4A, AIF, AIFC, AAC, APE
• Single-channel 16-bit ADC, SNR ≥ 90dB
• Dual-channel 16-bit DAC, SNR ≥ 95dB
• GPIO × 12
• UART
• IIC
• SPI
• EN
• PWM × 6
• ADC & DAC
• MIC
• Operating temperature: -40℃ ~ 85℃
• Ambient temperature: -40℃ ~ 105℃

Applications

• AI story machine
• AI toys
• AI smart home
• AI robots