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This is the wiki of ReSpeaker Core V2, ReSpeaker Core and ReSpeaker Mic Array.
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manually wiring respeaker 4 mic array to raspberry pi zero w #223

Open IshantPundir opened 5 years ago

IshantPundir commented 5 years ago

Hi, I am using ReSpeaker 4-Mic Array , with raspberry pi zero w

and I am also using a 480x360 lcd like this [---> https://www.amazon.in/Touch-Screen-Display-Raspberry-Pi/dp/B01N0LFGUL ]

since I can not connect raspberry pi with lcd and respeaker at the same time I have decided to manually wire the respeaker and lcd to my pi using only relevant connections

I just want to access the audio data from the 4 Chanels of respeaker so I am not using SPI (SPI is just used for led I guess)

I am only using I2S and I2c connections ie: PIN number --> [3, 5, 12, 35, 38, 40]

but on command arecord -L I get the following output :

=================================================== pi@raspberrypi:~ $ arecord -L null Discard all samples (playback) or generate zero samples (capture) default

can you please help me I have already checked my connections they are all good and I know my respeaker is also working because I have already tested it on other pi

can you please tell me if my connections pins selection are correct or not

and what should I do now??

xiongyihui commented 5 years ago

You can use i2cdetect -y 1 to check if the i2c bus works or not

$ i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- UU -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --

i2cdetect -y 1 will detect the mic array at i2c address 0x3b

IshantPundir commented 5 years ago

with i2cdetect -y 1 it is not detecting my i2c

pi@raspberrypi:~ $ i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- --

according to https://user-images.githubusercontent.com/948283/42431305-34863a62-8377-11e8-8be6-270c5d9aa180.png

i2c_SDA and i2c_SCL are used on PIN number 3 and 5 and I have checked the connections and it is there, so can you please tell me if there are some other pins that are also need to use for this

thanks

xiongyihui commented 5 years ago

Maybe it's power supply issue. Do you check the 5v and GND connections?

image

See also https://pinout.xyz/pinout/respeaker_4_mic_array

IshantPundir commented 5 years ago

hi I finally managed to detect my i2c turns out that I need to give both 5v and 3.5v to respeaker in order to make it work

below is the output I am getting now: pi@raspberrypi:~ $ i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- UU -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

but now from command record -L I am getting

pi@raspberrypi:~ $ arecord -L null Discard all samples (playback) or generate zero samples (capture) playback ac108 default

can you please help me with this

thanks you