View source for Ks0314 keyestudio ReSpeaker 2-Mic Pi HAT V1.0


[[image:KS0314.png|thumb|500px|right|Keyestudio ReSpeaker 2-Mic Pi HAT V1.0]]

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==Overview==
This is keyestudio ReSpeaker 2-Mic Pi HAT V1.0 shield designed for AI and voice applications. It is a low power stereo Codec based on the WM8960.<br> 
There are two microphones on the shield for sound collection, three APA102 RGB LEDs, one user button and two connectors for application extension. The shield comes with a <span style="color:red">2.54mm Grove cable </span> <br>
In addition, a 3.5mm audio jack or XH2.54-2P speaker output can be used for audio output.<br>
With this shield, you can build a more powerful and flexible voice product that integrates Amazon Amazona voice services, Google Assistant, and more.<br>
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<span style=color:red>Note:After plugging in speaker module, the status of RGB LED is not stable; however,the status is normal when testing RGB.</span></big>


<br>[[Image:KS0314 back.jpg|800px|frameless]]<br>

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==Features==
* Support the Raspberry Pi 3B
* Two microphones (Mic L and Mic R)
* Two Grove connectors
* One User-defined button
* 3.5mm audio interface
* XH2.54-2P audio output interface

<span style=color:red>Note:The experiment is done with Raspberry Pi 3B. Yet other versions of Raspberry Pi may not be compatible.</span>

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==PINOUT==
<br>[[Image:图片1fgnf.png|800px|frameless]]<br>

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==Interface Explanations==
1) '''Button:''' default connected to GPIO17<br>
2) '''Mic L and Mic R:''' microphone (labeled LEFT and RIGHT)<br>
3) '''RGB LED:'''three APA102 RGB LEDs, connected to the SPI interface of Raspberry Pi.<br>
4) '''WM8960:''' Low Power Stereo Codec<br>
5) '''Raspberry Pi 40 pin header:''' support the Raspberry Pi Zero, Raspberry Pi 1 B+, Raspberry Pi 2B and 3B.<br>
6) '''POWER:''' Micro USB port that powers the ReSpeaker 2-Mic Pi HAT. Power the circuit board to supply enough current when use the speaker.<br>
7) '''I2C:''' Grove I2C port, connected to I2C-1<br>
8) '''GPIO12:''' Grove digital port, connected to GPIO12 and GPIO13<br>
9) '''XH2.54-2P SPEAKER OUT:''' connecting speakers, XH2.54-2P connector<br>
10) '''3.5mm audio jack:''' connecting headphones or speakers with 3.5mm audio plug<br>

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==Test Method==
'''1.''' Firstly install the 2018-06-27-raspbian-stretch-lite to the RPI control board. You can download the image system from the link: <br>https://www.raspberrypi.org/downloads/raspbian/
<br>[[Image:KS0314-1.png|800px|frameless]]<br>
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Refer to the image installation from the link:<br>
http://wiki.keyestudio.com/index.php/KS0221_keyestudio_Ultimate_Starter_Kit_for_Raspberry_Pi
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'''2.''' Log onto the image file, followed by installing the driver as below. <br>
'''sudo apt-get update   '''<br>
<br>[[Image:KS0314-2.png|800px|frameless]]<br>
'''sudo apt-get upgrade'''<br>
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'''Enter ''Y'' and press the ENTER key to continue.'''<br>
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'''Enter the website https://github.com/respeaker/seeed-voicecard to download the zipped package file.''' 
<br>[[Image:KS0314-5.png|800px|frameless]]<br>
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'''Then put the package downloaded into the RPI system using the ''WinSCP''software.'''
<br>[[Image:KS0314-6.png|800px|frameless]]<br>
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'''Enter the ''unzip seeed-voicecard-master.zip'' to unzip the package'''
<br>[[Image:KS0314-7.png|800px|frameless]]<br>
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'''Then enter the ''cd seeed-voicecard-master'' into the folder''' 
<br>[[Image:KS0314-8.png|800px|frameless]]<br>

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'''Enter the ''sudo ./install.sh'' to start to install the file.''' 
<br>[[Image:KS0314-9.png|800px|frameless]]<br>
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'''Installation finished'''
<br>[[Image:KS0314-10.png|800px|frameless]]<br>
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'''Restart the software ''putty'', go into the ''seeed-voicecard-master'' folder, and enter ''aplay-l'', check whether the voicecard name matches with the source code seeed-voicecard.''' 
<br>[[Image:KS0314-11.png|800px|frameless]]<br>
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'''Put on the earphone (note: the sound is a little bit loud), then enter the ''arecord -f cd -Dhw:1 | aplay -Dhw:1'' If lightly hit the two microphones on the board, there should be sound. Otherwise it is poor contact. 
<br>[[Image:KS0314-12.png|800px|frameless]]<br>

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'''Hookup Guide：''' 
<br>[[Image:KS0314-13.png|800px|frameless]]<br>

'''Finally press the “Ctrl+C” to end the mic test.''' <br>
'''Now next we start to test the 3 LEDs on the shield.'''<br>
'''Enter the ''cd ..'' to return to the previous route and input the ''sudo raspi-config'''''
<br>[[Image:KS0314-14.png|800px|frameless]]<br>
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'''Select the ''Interfacing Options'' as below, then select the ''SPI'', click ''YES'', select ''OK'', ''Finish''. Shown below.'''

<br>[[Image:KS0314-15.png|800px|frameless]]<br>
<br>[[Image:KS0314-16.png|800px|frameless]]<br>
<br>[[Image:KS0314-17.png|800px|frameless]]<br>
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'''Then, enter the git clone https://github.com/respeaker/mic_hat.gir to download the package file.''' 

<br>[[Image:KS0314-20.png|800px|frameless]]<br>
<br>[[Image:KS0314-21.png|800px|frameless]]<br>
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'''Enter the ''sudo apt-get install python-pip'' to install the file.'''

<br>[[Image:KS0314-22.png|800px|frameless]]<br>
<br>[[Image:KS0314-23.png|800px|frameless]]<br>
<br>[[Image:KS0314-24.png|800px|frameless]]<br>
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'''Installed successfully, enter the ''sudo pip install spidev'' to install the file.'''
<br>[[Image:KS0314-25.png|800px|frameless]]<br>
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'''Installed well, enter the ''mic_hat'' folder.'''
<br>[[Image:KS0314-26.png|800px|frameless]]<br>
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'''Then enter the ''python pixels.py'' to run the program.''' 
<br>[[Image:KS0314-27.png|800px|frameless]]<br>
<br>[[Image:KS0314-28.png|800px|frameless]]<br>
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'''When run the program, 3 LEDs on the board will light up in different colors.'''
<br>[[Image:KS0314-29.png|700px|frameless]]<br>

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==Resources==
'''Download the PDF and Package:'''<br>
https://fs.keyestudio.com/KS0314


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==Buy From==
*[https://www.keyestudio.com/keyestudio-5v-respeaker-2-mic-pi-hat-v10-expansion-board-for-raspberry-pi-zero-zero-w-b-p0342.html    Official website ]

* [https://www.ebay.com/itm/132770871295   Get one on eBay]

* [https://www.aliexpress.com/store/product/Keyestudio-5V-ReSpeaker-2-Mic-Pi-HAT-V1-0-Expansion-Board-For-Raspberry-Pi-Zero-Zero/1452162_32902300949.html?spm=2114.12010612.8148356.2.3fc85f388DKGTa    Get one on Aliexpress]



 [[Category: Shield]]