SpeakUp 3 Click Board™

How Does The SpeakUp 3 Click Board™ Work?

The SpeakUp 3 Click Board™ is based on the VC-02, an offline voice recognition AI module from Ai-Thinker Technology, characterized by high reliability and robust versatility. The VC-02 module uses an integrated voice chip US516P6 from Unisound, which continuously optimizes and innovates algorithms in speech recognition technology. The offline recognition algorithm is deeply integrated with the chip architecture, providing customers with an ultra-low-cost offline voice recognition solution. This board can be widely and quickly applied to all intelligent small household appliances and products requiring voice control.

The US516P6 chip uses a 32-bit RSIC architecture core, running at 240MHz, and incorporates a DSP instruction set specifically for signal processing and speech recognition, an FPU arithmetic unit that supports floating-point operations, and an FFT accelerator (support 1024-point complex FFT/IFFT operations, or 2048-point real FFT/IFFT operations). What makes this module unique are features like offline identification of 150 local instructions and self-learning of wake-up words, RTOS lightweight system, 90% recognition rate in a far field distance from 1 up to 5m, firmware update feature, as well as the selection of the communication method with the module.

The SpeakUp 3 Click Board™ comes with a configurable host interface allowing communication with MCU using the chosen interface. The VC-02 can communicate with MCU using the UART interface, a default communication interface with commonly used UART RX and TX pins, and a default baud rate of 115,200bps. Users can also use other interfaces, such as SPI and I2C, to configure the module and write the library by themselves.

Besides, at the centre of the SpeakUp 3 Click, an additional unpopulated header offers full support for debugging and programming capabilities. With this header, the user can use a JTAG interface, in addition to the UART interface, for programming and debugging available through the JTAG interface pins (TCK and TMS). A special addition to this Click board™ are connectors, marked as MIC and SPK, for an analogue omnidirectional microphone and 8Ω 2W cavity speaker from Shenzhen Anxinke Technology. These parts can be found in the same package as the Click board or can be acquired as a solo version in our shop.

The SpeakUp 3 Click Board™ can only operate with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.

SPECIFICATIONS

PINOUT DIAGRAM

This table shows how the pinout of the SpeakUp 3 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
NC	1	AN	PWM	16	NC
NC	2	RST	INT	15	NC
NC	3	CS	RX	14	TX	UART TX
SPI Clock	SCK	4	SCK	TX	13	RX	UART RX
SPI Data OUT	SDO	5	MISO	SCL	12	SCL	I2C Clock
SPI Data IN	SDI	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	5V	Power Supply
Ground	GND	8	GND	GND	9	GND	Ground

ONBOARD SETTINGS AND INDICATORS

SPEAKUP 3 CLICK ELECTRICAL SPECIFICATIONS