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VMP403 

V. 01 

 15/04/2020 

©Velleman nv 

4.

 

Overview 

 

 

General 

 

ReSpeaker 2-mics Pi HAT is a dual-microphone expansion board for Raspberry Pi designed for 
AI and voice applications. It allows you to build a powerful and flexible voice product that 
integrates services like Amazon Alexa Voice Service, Google Assistant, etc. 

 

 

 

The board is developed based on WM8960, a low power stereo codec. There are 2 microphones 
on both sides of the board for collecting sounds and it also provides 3 APA102 RGB LEDs, 1 
User Button and 2 on-board interfaces for expanding your applications. There is also a 3.5mm 
Audio Jack and JST 2.0 Speaker pins for audio output. 

 

Technical Specifications 

 

dimensions ................................................................. 65 x 30 x 15 mm (2.6 x 1.18 x 0.6") 

 

5.

 

Operation 

 

 

Overview 

 

 

 

 

 

Follow this manual to connect the Raspberry Pi 4 2 GB RAM to Google Assistant. This service 
allows you to voice-

control the appliance after saying ‘Ok Google’ or ‘hey Google’.

 

 

 

 

Requirements: 

 

 

Raspberry Pi 4 with Raspbian 

 

 

monitor 

 

 

keyboard and mouse 

 

 

mini HDMI

®

 to monitor 

 

 

ReSpeaker 2-mics Pi HAT 

 

 

headphones or speakers 

 

Raspberry Pi Configuration 

 

If you are new to Raspberry Pi, just follow this tutorial to download and install the latest 
version of Raspbian: 

 

 

 

https://projects.raspberrypi.org/en/projects/raspberry-pi-setting-up

 

Summary of Contents for VMP403

Page 1: ...VMP403 USER MANUAL 2 ...

Page 2: ... 8 years and above and persons with reduced physical sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning the use of the device in a safe way and understand the hazards involved Children shall not play with the device Cleaning and user maintenance shall not be made by children without supervision 3 General Guidelines Refer...

Page 3: ...nterfaces for expanding your applications There is also a 3 5mm Audio Jack and JST 2 0 Speaker pins for audio output Technical Specifications dimensions 65 x 30 x 15 mm 2 6 x 1 18 x 0 6 5 Operation Overview Follow this manual to connect the Raspberry Pi 4 2 GB RAM to Google Assistant This service allows you to voice control the appliance after saying Ok Google or hey Google Requirements Raspberry ...

Page 4: ...spberry Pi 4 2 Download and install the drivers for the ReSpeaker by entering following commands into the Command Prompt o sudo apt get update o sudo apt get upgrade o git clone o cd seeed voicecard o sudo install sh This may take a couple of minutes When ready reboot the Raspberry Pi ...

Page 5: ...15 04 2020 5 Velleman nv o sudo reboot 3 Now let s check if the name of the ReSpeaker matches with the name of the source Open the Command Prompt and enter following commands o cd speed voicecard o aplay o arecord ...

Page 6: ...n nv 4 Now it s time to set the sound Enter following command o alsamixer Press F6 and select the correct board option 1 Set following values o Lower ADC PCM to 25 or you will hear a loud beep o Set the recording s volume with Capture ...

Page 7: ...com respeaker mic_hat git o cd mic_hat o python pixels py You can change the colour of the LEDs through the Command Prompt Using the On Board User Button 1 The press button on the ReSpeaker 2 mics is connected to the GPIO17 Enter following commands o sudo pip install rpi gpio o nano userbutton py 2 Copy the code below into the Command Prompt import RPi GPIO as GPIO import time GPIO setmode GPIO BC...

Page 8: ...VMP403 V 01 15 04 2020 8 Velleman nv 3 Save the code with CTRL S 4 Execute with python userbutton py Check the terminal to see if the button is pressed ...

Page 9: ...s only Velleman nv cannot be held responsible in the event of damage or injury resulting from incorrect use of this device For more info concerning this product and the latest version of this manual please visit our website www velleman eu The information in this manual is subject to change without prior notice COPYRIGHT NOTICE The copyright to this manual is owned by Velleman nv All worldwide rig...

Page 10: ...n shocks falls dust dirt humidity and by the article as well as its contents e g data loss compensation for loss of profits consumable goods parts or accessories that are subject to an aging process during normal use such as batteries rechargeable non rechargeable built in or replaceable lamps rubber parts drive belts unlimited list flaws resulting from fire water damage lightning accident natural...

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