Grove - Offline Voice Recognition Module

Sale price A$37.72   Inc. GST
Out Of Stock

We will notify you when this product becomes available.


  • FFT Accelerator: Supports up to 1024 points of complex FFT/IFFT operations or 2048 points of real FFT/IFFI;
  • Rich Peripherals: Support 1 analog Mic input and 4 digital Mic inputs and dual-channel DAC outputs;
  • Built-in voltage conversion:Supports 3.6V to 5V range power inputs and built-in 5V to 3.3V and 3.3V to 1.2V LDOs to power the chip;
  • Smart Detection: Built-in POR (Power on Reset), Low Voltage Detection and Watchdog;
  • Rich Interface: 1 full-duplex UART up to 3Mbps and supports SPI, I2C, ADC, and PWM interfaces.


Online Voice recognition modules require a reliable internet connection to generate responses and are not independent of the Microcontroller/Processor controlling them. While one can create an offline voice recognition module using a compatible processor like RaspberryPi, and train a custom neural network to do this, it is not feasible for battery-operated edge devices

This Grove-Offline Voice Recognition Module is a truly offline voice recognition module with 150 pre-programmed voice commands, which can be communicated through UART. It features connections for the speaker and microphone, along with indicator LEDs. The power supply to the module is ESD-protected, adding more safety to the module. It is a perfect low-cost solution for adding voice control to your IoT projects!

We have developed more than 400 Grove modules, covering a wide range of applications that can fulfill various needs. Click to explore the Grove Ecosystem Introduction | Seeed Studio Wiki and get started to Grove your Idea. For all Grove users (especially beginners), we provide you with guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your use of the product.


  • Home automation
  • In-car systems
  • Industrial control, Medical devices
  • Consumer electronics
  • IoT devices






Operating Temperature



-40°C~125°C, <90%RH

Power supply range

Supply voltage 3.6V-5V, supply current >500mA

Supported interfaces


Number of available IO ports


Serial Rate

Default 115200 bps

SPI Flash

2MB (internal)

Hardware  Overview

Part List

Offline Voice Recognition Module




Grove Cable




Shipping rates Australia wide and New Zealand

Please add the items in cart and proceed to checkout to calculate shipping cost. We have range of shipping options once goods are ready to dispatch. 
1. Regular shipping: Goods will be shipped using Australia post regular shipping service. 
2. Express shipping: Goods will be shipped using Australia post EXPRESS shipping service. 
3. Express split shipping: Local stock from Melbourne will be shipped ASAP (1 business day) using EXPRESS shipment while remaining items from overseas stock when arrived in Melbourne shipped using second EXPRESS shipment. 
4. Pick up from Thomastown, Melbourne is available on appointment between 9 am to 3 pm during business days. 



  • How do I estimate shipping for my order?
    • Add products in the shopping cart and head to the checkout page to estimate the shipping.

Dispatch time

Unless expressly agreed otherwise with you, we will not commence delivery of an order until we have received cleared payment of the purchase price in full.

All orders placed before 11 am AEST (Monday to Friday) will ordinarily be processed on the same day.

We will endeavour to ship the Products by the applicable time indicated on the website, but all times are indicative only.  All shipping times are dispatch times only, and actual delivery dates will depend on the shipping method chosen, delivery address and delivery service provider. 

Note- Please make a note during purchase if you require any item urgently. However we cannot guarantee that we will be able to comply with any request

*Go to Australia post delivery time calculation to get various Australia post service in your area please use our shipping postcode Thomastown, 3074 as the "from" address -

Shipping Destinations

We ship all products throughout mainland Australia, Tasmania and New Zealand - Including Darwin, Melbourne, Sydney, Tasmania, Adelaide, Brisbane, Perth, all metro and regional areas but do not deliver to areas in Australia where the Australia Post delivery network is not available. 

Check Express shipping delivery coverage area at -

Receipt of deliveries

Deliveries to post office boxes are not permitted where delivery is by courier. If delivery is by courier and nobody is available at the delivery address to accept delivery when delivery is attempted then the courier may either:

  • leave the relevant parcel at the unattended address (the courier will do so if specified in your delivery requirements); or
  • re-attempt delivery at a later time or date, in which case we may charge you an additional re-delivery fee. 

Note that if a delivery is left unattended at the shipping address and is subsequently stolen then the theft is your responsibility, not ours.

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