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Specification
AspectRatio : 1.77:1
Brand : DFROBOT
BulletPoint1 : 【Easy to Use】: this voice recognition sensor is compatible with micro:bit, Arduino Uno and ESP32. It can be programmed using MakeCode and supports plug-and-play functionality. At the same time, this voice recognition sensor also support I2C and UART communication methods, with a Gravity interface.
BulletPoint2 : 【121 built-in fixed command words】: The offline voice recognition sensor comes with 121 built-in fixed command words, eliminating the need for users to record their own voices. For instance, in an intelligent window system, when it starts to rain or thunder, there's no need for manual window operation. The offline voice recognition module can recognize the pre-set command word "close the window," triggering the automatic closing of the window to cope with sudden weather changes.
BulletPoint3 : 【Self-Learning Function+Adding 17 Custom Command Words】: This voice recognition module is equipped with a self-learning function and supports the addition of 17 custom command words. Any sound could be trained as a command, such as whistling, snapping, or even cat meows, which brings great flexibility to interactive audio projects. For instance automatic pet feeder. When a cat emits a meow, the offline voice recognition module can recognize the meow and trigger the feeder to automatically provide food for the cat.
BulletPoint4 : 【No network required】: This voice recognition sensor can be used without the need for a network connection, making it suitable for various settings. It provides fast response to specific command words and instructions. Moreover, the onboard MCU is equipped with voice recognition algorithms, ensuring that conversations are not recorded or uploaded to the cloud, thus ensuring greater privacy and security.
BulletPoint5 : 【Integrated Microphone and Speaker with Compact Size】: built-in speaker and external speaker interface for real-time voice feedback of recognition results. Compact size of only 49×32 mm, convenient for embedding in applications.
Color : Red
CompatibleDevices : micro:bit, Arduino, ESP32
ConnectivityProtocol : BACnet MS/TP
ConnectivityTechnology : I2C
ConnectorGender : Male-to-Female
ConnectorType : Screw
ControllerType : Push Button
ControlMethod : touch
CustomerPackageType : FFP
ExternallyAssignedProductIdentifier : 6959420923342
ExternallyAssignedProductIdentifier1 : 657835746483
ExternallyAssignedProductIdentifier2 : 0657835746483
HardwareInterface1 : usb3.0
HardwareInterface2 : hdmi
HardwareInterface3 : usb
HardwareInterface4 : micro_hdmi
HasColorScreen : 1
ImageAspectRatio : 16:9
ImageBrightness : 500 candela
ImageContrastRatio : 1500:1
IncludedComponents : Built-in speaker and interface for external speaker
IndoorOutdoorUsage1 : outdoor
IndoorOutdoorUsage2 : indoor
InputVoltage : 9 volts
ItemName : Gravity: Offline Language Learning Voice Recognition Sensor for micro:bit/Arduino / ESP32 - I2C & UART
ItemPackageDimensions_Height : 8.1 centimeters
ItemPackageDimensions_Length : 2.7 centimeters
ItemPackageDimensions_Width : 6.7 centimeters
ItemPackageQuantity : 1
ItemShape : Round
ItemTypeKeyword : single-board-computers
Manufacturer : DFROBOT
Material : Alloy Steel
MaxHorizontalResolution : 1024
ModelName : AI Offline Language Learning Voice and Speech Recognition Module
ModelNumber : SEN0539-EN
MountingType : Wall Mount
NativeResolution : 1024x600
NumberOfContacts : 40
NumberOfItems : 1
NumberOfPins : 15
NumberOfPoles : 40
OutputVoltage : 5 volts
PartNumber : SEN0539-EN
ProcessorCount : 1
ProductDescription : Introduction
The Gravity: Offline Voice Recognition Sensor is an offline voice recognition module that utilizes a new offline voice recognition chip. It comes with 121 built-in commands and supports 17 custom commands, functioning even without an internet connection. It adopts a dual-microphone design for superior noise resistance, and is equipped with built-in and external speaker interfaces for real-time feedback. Compatible with various 3.3V or 5V controllers, it's an ideal choice for applications requiring voice control or interaction, like smart homes, toys, lamps, and robot projects.

Self-Learning Function
This voice recognition module is equipped with a self-learning feature, supporting the addition of 17 custom command words. It offers the flexibility to train any sound as a command, such as a whistle, a snap, or even a cat's meow, greatly enhancing the versatility of interactive audio projects.

User-Friendly
The offline speech recognition sensor boasts a user-friendly design. It comes with 121 built-in fixed command words, eliminating the need for users to record their own voices.

Real-Time Voice Feedback

The module is equipped with an integrated speaker and an interface for an external speaker, enabling it to deliver real-time vocal feedback on recognition outcomes.The module is equipped with an integrated speaker and an interface for an external speaker, enabling it to deliver real-time vocal feedback on recognition outcomes.

High Compatibility

Support I2C and UART, with a Gravity interface

Compatible with 3.3V/5V

Specification
Operating Voltage: 3.3 - 5V
Maximum Operating Current:≤370 mA (5V)
Communication: I2C/UART
I2C Address: 0x64
Fixed Command: 121
Fixed Wake-up Command: 1
Custom Command: 17 Learning Activation Command: 1
Onboard Microphone Sensitivity: -28db
Module Size: 49×32 mm/1.93×1.26”

ProductSiteLaunchDate : 2023-05-22T09:23:03.928Z
RealAngleOfView : 170 degrees
RecommendedUsesForProduct : Extension cable for Raspberry Pi camera, Other applications
RefreshRate : 60 hertz
Resolution : SVGA Wide
ScreenSurfaceDescription : Glossy
Size : 7inh
SpecificUsesForProduct : Business
Style : Classic
SupplierDeclaredDgHzRegulation : not_applicable
TemperatureControlType : Manual
TotalHdmiPorts : 2
TotalPowerOutlets : 4
TotalUsbPorts : 2
TotalVideoOutPorts : 2
UnitCount : 1
UnspscCode : 46171600
ViewingAngle : 178 degrees
Voltage : 220 volts
Wattage : 3520 watts
WirelessCommStandard : bluetooth