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Espressif ESP32-LyraT-Mini V1.2 Development board
The Espressif ESP32-LyraT-Mini V1.2 is a compact audio development board featuring the dual-core ESP32 microcontroller with integrated WiFi and Bluetooth connectivity, designed specifically for voice interface and audio processing applications. Audio engineers, IoT developers, and embedded systems professionals use this board to prototype voice assistants, smart speakers, audio streaming devices, and real-time audio signal processing solutions. This development platform solves the challenge of integrating professional-grade audio capabilities with wireless connectivity in a miniaturized form factor, eliminating the need for separate audio codecs and wireless modules.
Product Overview
The ESP32-LyraT-Mini V1.2 integrates a high-performance dual-core Xtensa 32-bit LX6 processor running at 240 MHz with an onboard ES8311 audio codec that supports stereo recording and playback at up to 48 kHz sampling rate. The board features a built-in microphone array with digital signal processing capabilities for noise cancellation and beamforming, enabling clear voice capture even in noisy environments. The dual-core architecture allows simultaneous execution of audio processing tasks on one core while WiFi/Bluetooth communication runs on the other, providing real-time performance without bottlenecks. With 520 KB of SRAM and 4 MB of integrated SPI flash memory, developers have sufficient space for audio buffers and firmware code.
What distinguishes the V1.2 revision is its optimized power management circuit delivering three independent power rails for analog audio, digital audio, and RF sections, resulting in superior signal-to-noise ratio and reduced electromagnetic interference. The board includes a 3.5mm stereo headphone jack with integrated amplifier, stereo line-in connector, and digital I2S interface for external audio peripherals. Built-in battery charging circuit supports lithium-ion batteries for portable voice applications. The compact 45mm x 55mm footprint makes it ideal for space-constrained IoT devices while maintaining professional audio quality standards required for commercial voice applications.
Key Specifications
| Specification | Details |
| Product Type | Audio Development Board with Microcontroller |
| Brand | Espressif Systems |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Processor | Dual-core Xtensa 32-bit LX6 at 240 MHz |
| RAM Memory | 520 KB SRAM |
| Flash Memory | 4 MB SPI Flash |
| Audio Codec | ES8311 stereo audio codec with 48 kHz sampling rate |
| Wireless | 802.11 b/g/n WiFi and Bluetooth 4.2 LE |
| Microphone Array | Built-in digital microphone with DSP for noise cancellation |
| Audio Connectors | 3.5mm stereo headphone jack, stereo line-in, I2S digital interface |
| Battery Support | Integrated Li-ion charging circuit |
| Board Dimensions | 45mm x 55mm |
| Operating Voltage | 3.3V to 5.5V USB power or battery |
Key Features
- Dual-core 240 MHz Xtensa processor enabling simultaneous audio processing and wireless communication without performance degradation
- Professional-grade ES8311 audio codec with 48 kHz stereo recording and playback for studio-quality voice and music applications
- Integrated digital microphone array with hardware-accelerated noise suppression and echo cancellation for clear voice capture in real-world environments
- Optimized power distribution with separate analog, digital, and RF power rails achieving superior SNR of 95 dB for professional audio applications
- Built-in lithium-ion battery charging circuit with power management enabling portable voice assistant and wearable audio device development
- I2S digital audio interface for connecting external audio peripherals, amplifiers, or professional audio equipment
- Integrated 802.11 WiFi and Bluetooth 4.2 LE connectivity for cloud-based voice services and wireless audio streaming
- Compact 45mm x 55mm form factor fitting seamlessly into space-constrained IoT and smart device designs
Applications and Use Cases
- Voice Assistant Development: Create custom voice-controlled IoT devices with local speech processing and cloud connectivity for home automation and smart appliance control
- Smart Speaker Prototyping: Develop WiFi-enabled speakers with microphone array beamforming and real-time audio processing for multi-room audio systems
- Audio Streaming Devices: Build wireless audio receivers with low-latency I2S output for integration with professional amplifiers and speaker systems
- Wearable Audio Applications: Design portable voice recorders, hearing aids, and audio monitoring devices leveraging the integrated battery charging and compact form factor
- Real-time Audio Signal Processing: Implement DSP algorithms for equalization, compression, and effects processing with dual-core parallel execution
- IoT Acoustic Monitoring: Deploy environmental sound classification and anomaly detection systems for industrial monitoring and security applications
- Educational Audio Projects: Learn embedded audio programming, digital signal processing, and wireless communication in a single integrated platform
How to Use
Begin by installing the ESP-IDF development framework and audio libraries on your computer, then connect the ESP32-LyraT-Mini V1.2 to your computer via USB. The board enumerates as a standard USB device providing both power and serial communication for firmware flashing. Use the provided example projects in the ESP-ADF (Audio Development Framework) to understand audio codec configuration, microphone input routing, and speaker output control. The ES8311 codec requires I2C configuration for register setup and I2S bus initialization for audio data streaming, both of which are handled by the audio libraries included in ESP-ADF.
For voice applications, configure the digital signal processor pipeline in firmware to enable microphone array beamforming and noise suppression before passing audio to your voice recognition engine. The dual-core architecture allows you to run audio processing on one core while the second core handles WiFi communication and cloud connectivity. When integrating external audio equipment via the I2S interface, ensure proper clock configuration and frame synchronization. For battery-powered applications, implement power management by disabling WiFi during silent periods and using the integrated battery charging circuit. The 3.5mm headphone jack includes an integrated amplifier suitable for driving 16-32 ohm headphones directly, while the line-in connector accepts standard audio signals from microphones or line-level sources.
Frequently Asked Questions
What is the difference between ESP32-LyraT-Mini V1.2 and the standard ESP32 development board?
The ESP32-LyraT-Mini V1.2 is specifically designed for audio applications with an integrated ES8311 stereo audio codec, digital microphone array with DSP, and optimized power distribution for audio circuits. Standard ESP32 boards lack these audio-specific components and require external audio codec modules, making them unsuitable for voice and audio processing projects. The V1.2 revision includes improved power rail separation reducing noise and electromagnetic interference compared to earlier versions.
Can I use this board for voice recognition and wake-word detection?
Yes, the ESP32-LyraT-Mini V1.2 is specifically designed for voice applications. The integrated microphone array with hardware noise cancellation and beamforming provides clean audio input for voice recognition engines. You can run lightweight voice recognition models like TensorFlow Lite for microcontroller or use cloud-based services via WiFi. The dual-core processor allows simultaneous wake-word detection on one core and WiFi communication on the other without performance loss.
What sampling rates and audio formats does the ES8311 codec support?
The ES8311 audio codec supports sampling rates of 8 kHz, 16 kHz, 32 kHz, and 48 kHz with 16-bit and 24-bit audio formats. For most voice applications, 16 kHz mono is optimal as it captures the full frequency range of human speech while minimizing memory and processing requirements. The codec supports stereo recording and playback, making it suitable for music streaming and high-fidelity audio applications requiring 44.1 kHz or 48 kHz sampling rates.
How do I connect external audio equipment like microphones or amplifiers?
The board provides three audio connection options: the 3.5mm stereo headphone jack with integrated amplifier for direct headphone connection, the stereo line-in connector for microphone or line-level audio input, and the I2S digital interface for connecting external audio codecs or professional audio equipment. The I2S interface provides bit clock, frame sync, and data lines for transparent audio streaming at any supported sampling rate. Consult the technical reference manual for pin assignments and I2S configuration details.
What is the battery life when running voice applications?
Battery life depends on your specific application and power management implementation. With WiFi continuously enabled, expect 4-8 hours from a typical 1000 mAh lithium-ion battery. Implementing aggressive power management by disabling WiFi during silent periods and using light sleep modes can extend battery life to 24-48 hours. The integrated battery charging circuit supports standard 500 mA USB charging, allowing full charge in approximately 2-3 hours depending on battery capacity.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
-
Buy Espressif ESP32-LyraT-Mini V1.2 Development board Online in India
Purchase the Espressif ESP32-LyraT-Mini V1.2 Development board online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.
Espressif ESP32-LyraT-Mini V1.2 Development board
The Espressif ESP32-LyraT-Mini V1.2 is a compact audio development board featuring the dual-core ESP32 microcontroller with integrated WiFi and Bluetooth connectivity, designed specifically for voice interface and audio processing applications. Audio engineers, IoT developers, and embedded systems professionals use this board to prototype voice assistants, smart speakers, audio streaming devices, and real-time audio signal processing solutions. This development platform solves the challenge of integrating professional-grade audio capabilities with wireless connectivity in a miniaturized form factor, eliminating the need for separate audio codecs and wireless modules.
Product Overview
The ESP32-LyraT-Mini V1.2 integrates a high-performance dual-core Xtensa 32-bit LX6 processor running at 240 MHz with an onboard ES8311 audio codec that supports stereo recording and playback at up to 48 kHz sampling rate. The board features a built-in microphone array with digital signal processing capabilities for noise cancellation and beamforming, enabling clear voice capture even in noisy environments. The dual-core architecture allows simultaneous execution of audio processing tasks on one core while WiFi/Bluetooth communication runs on the other, providing real-time performance without bottlenecks. With 520 KB of SRAM and 4 MB of integrated SPI flash memory, developers have sufficient space for audio buffers and firmware code.
What distinguishes the V1.2 revision is its optimized power management circuit delivering three independent power rails for analog audio, digital audio, and RF sections, resulting in superior signal-to-noise ratio and reduced electromagnetic interference. The board includes a 3.5mm stereo headphone jack with integrated amplifier, stereo line-in connector, and digital I2S interface for external audio peripherals. Built-in battery charging circuit supports lithium-ion batteries for portable voice applications. The compact 45mm x 55mm footprint makes it ideal for space-constrained IoT devices while maintaining professional audio quality standards required for commercial voice applications.
Key Specifications
| Specification | Details |
| Product Type | Audio Development Board with Microcontroller |
| Brand | Espressif Systems |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Processor | Dual-core Xtensa 32-bit LX6 at 240 MHz |
| RAM Memory | 520 KB SRAM |
| Flash Memory | 4 MB SPI Flash |
| Audio Codec | ES8311 stereo audio codec with 48 kHz sampling rate |
| Wireless | 802.11 b/g/n WiFi and Bluetooth 4.2 LE |
| Microphone Array | Built-in digital microphone with DSP for noise cancellation |
| Audio Connectors | 3.5mm stereo headphone jack, stereo line-in, I2S digital interface |
| Battery Support | Integrated Li-ion charging circuit |
| Board Dimensions | 45mm x 55mm |
| Operating Voltage | 3.3V to 5.5V USB power or battery |
Key Features
- Dual-core 240 MHz Xtensa processor enabling simultaneous audio processing and wireless communication without performance degradation
- Professional-grade ES8311 audio codec with 48 kHz stereo recording and playback for studio-quality voice and music applications
- Integrated digital microphone array with hardware-accelerated noise suppression and echo cancellation for clear voice capture in real-world environments
- Optimized power distribution with separate analog, digital, and RF power rails achieving superior SNR of 95 dB for professional audio applications
- Built-in lithium-ion battery charging circuit with power management enabling portable voice assistant and wearable audio device development
- I2S digital audio interface for connecting external audio peripherals, amplifiers, or professional audio equipment
- Integrated 802.11 WiFi and Bluetooth 4.2 LE connectivity for cloud-based voice services and wireless audio streaming
- Compact 45mm x 55mm form factor fitting seamlessly into space-constrained IoT and smart device designs
Applications and Use Cases
- Voice Assistant Development: Create custom voice-controlled IoT devices with local speech processing and cloud connectivity for home automation and smart appliance control
- Smart Speaker Prototyping: Develop WiFi-enabled speakers with microphone array beamforming and real-time audio processing for multi-room audio systems
- Audio Streaming Devices: Build wireless audio receivers with low-latency I2S output for integration with professional amplifiers and speaker systems
- Wearable Audio Applications: Design portable voice recorders, hearing aids, and audio monitoring devices leveraging the integrated battery charging and compact form factor
- Real-time Audio Signal Processing: Implement DSP algorithms for equalization, compression, and effects processing with dual-core parallel execution
- IoT Acoustic Monitoring: Deploy environmental sound classification and anomaly detection systems for industrial monitoring and security applications
- Educational Audio Projects: Learn embedded audio programming, digital signal processing, and wireless communication in a single integrated platform
How to Use
Begin by installing the ESP-IDF development framework and audio libraries on your computer, then connect the ESP32-LyraT-Mini V1.2 to your computer via USB. The board enumerates as a standard USB device providing both power and serial communication for firmware flashing. Use the provided example projects in the ESP-ADF (Audio Development Framework) to understand audio codec configuration, microphone input routing, and speaker output control. The ES8311 codec requires I2C configuration for register setup and I2S bus initialization for audio data streaming, both of which are handled by the audio libraries included in ESP-ADF.
For voice applications, configure the digital signal processor pipeline in firmware to enable microphone array beamforming and noise suppression before passing audio to your voice recognition engine. The dual-core architecture allows you to run audio processing on one core while the second core handles WiFi communication and cloud connectivity. When integrating external audio equipment via the I2S interface, ensure proper clock configuration and frame synchronization. For battery-powered applications, implement power management by disabling WiFi during silent periods and using the integrated battery charging circuit. The 3.5mm headphone jack includes an integrated amplifier suitable for driving 16-32 ohm headphones directly, while the line-in connector accepts standard audio signals from microphones or line-level sources.
Frequently Asked Questions
What is the difference between ESP32-LyraT-Mini V1.2 and the standard ESP32 development board?
The ESP32-LyraT-Mini V1.2 is specifically designed for audio applications with an integrated ES8311 stereo audio codec, digital microphone array with DSP, and optimized power distribution for audio circuits. Standard ESP32 boards lack these audio-specific components and require external audio codec modules, making them unsuitable for voice and audio processing projects. The V1.2 revision includes improved power rail separation reducing noise and electromagnetic interference compared to earlier versions.
Can I use this board for voice recognition and wake-word detection?
Yes, the ESP32-LyraT-Mini V1.2 is specifically designed for voice applications. The integrated microphone array with hardware noise cancellation and beamforming provides clean audio input for voice recognition engines. You can run lightweight voice recognition models like TensorFlow Lite for microcontroller or use cloud-based services via WiFi. The dual-core processor allows simultaneous wake-word detection on one core and WiFi communication on the other without performance loss.
What sampling rates and audio formats does the ES8311 codec support?
The ES8311 audio codec supports sampling rates of 8 kHz, 16 kHz, 32 kHz, and 48 kHz with 16-bit and 24-bit audio formats. For most voice applications, 16 kHz mono is optimal as it captures the full frequency range of human speech while minimizing memory and processing requirements. The codec supports stereo recording and playback, making it suitable for music streaming and high-fidelity audio applications requiring 44.1 kHz or 48 kHz sampling rates.
How do I connect external audio equipment like microphones or amplifiers?
The board provides three audio connection options: the 3.5mm stereo headphone jack with integrated amplifier for direct headphone connection, the stereo line-in connector for microphone or line-level audio input, and the I2S digital interface for connecting external audio codecs or professional audio equipment. The I2S interface provides bit clock, frame sync, and data lines for transparent audio streaming at any supported sampling rate. Consult the technical reference manual for pin assignments and I2S configuration details.
What is the battery life when running voice applications?
Battery life depends on your specific application and power management implementation. With WiFi continuously enabled, expect 4-8 hours from a typical 1000 mAh lithium-ion battery. Implementing aggressive power management by disabling WiFi during silent periods and using light sleep modes can extend battery life to 24-48 hours. The integrated battery charging circuit supports standard 500 mA USB charging, allowing full charge in approximately 2-3 hours depending on battery capacity.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
-
Buy Espressif ESP32-LyraT-Mini V1.2 Development board Online in India
Purchase the Espressif ESP32-LyraT-Mini V1.2 Development board online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.