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Topic: KY-037 Microphone with GSM-Shield 2 Problem? (Read 4551 times) previous topic - next topic

QuantumBit

Dec 18, 2019, 01:26 pm Last Edit: Dec 18, 2019, 10:17 pm by QuantumBit
Hello,

There is a Problem with the Microphone, it does not get Audio.

While the Speaker works, the Microphone do not and I don't know if it's needed , but "there is no Code yet for the Microphone and Speaker".

I have tried two different Microphones, one with three and the other with four connectors.

The Connectors of the KY-037 Microphone are four (vcc, gnd, d0, a0).
The Connectors of the other Microphone(which looks similar) are three (vcc, gnd, out).

The GSM-shield 2 have on the backside, four Connections for Microphone (m1p, m1n, m2p, m2n) (n=negative, p=positive).
I used the m1p,m1n connections with vcc(m1p) and gnd(m1n). But where to wire the third Wire (out,d0 or a0) ?

In the link on page 49 you might find some technical details about the gsm-Processor : https://www.arduino.cc/en/uploads/Main/Quectel_M10_datasheet.pdf

It might be a Programing or a Hardware problem or both of it ?

Edit-1 :
Seems the Microphone needs base 5 Volt to work, so I got it from the Arduino.
Now I tried to connect (out) connector of the Microphone to the connection (m1p) of the GSM-module.
And (vcc) and (gnd) to the (5v) and (gnd) of the Arduino.

Result:
The activity Led's of the Microphone lights up , but there is still no Audio or just windy-sound.

No one with a similar Problem ?
Thanks

pert

I've deleted your other cross-post(s) @QuantumBit.

Cross-posting is against the rules of the forum. The reason is that duplicate posts can waste the time of the people trying to help. Someone might spend 15 minutes (or more) writing a detailed answer on this topic, without knowing that someone else already did the same in the other topic.

Repeated cross-posting will result in a suspension from the forum.

In the future, please take some time to pick the forum board that best suits the topic of your question and then only post once to that forum board. This is basic forum etiquette, as explained in the sticky "How to use this forum - please read." post you will find at the top of every forum board. It contains a lot of other useful information. Please read it.

Thanks in advance for your cooperation.

QuantumBit

I've deleted your other cross-post(s) @QuantumBit.

Cross-posting is against the rules of the forum. The reason is that duplicate posts can waste the time of the people trying to help. Someone might spend 15 minutes (or more) writing a detailed answer on this topic, without knowing that someone else already did the same in the other topic.

Repeated cross-posting will result in a suspension from the forum.

In the future, please take some time to pick the forum board that best suits the topic of your question and then only post once to that forum board. This is basic forum etiquette, as explained in the sticky "How to use this forum - please read." post you will find at the top of every forum board. It contains a lot of other useful information. Please read it.

Thanks in advance for your cooperation.
Okay, thank you, I will take care next time.

QuantumBit

#3
Dec 21, 2019, 10:28 pm Last Edit: Dec 21, 2019, 10:50 pm by QuantumBit
Hello,

Seems to work now, just it haves some interferences(noise) while speaking.

The base Voltage of the Microphone KY-037 might be 3.3V or 5V from the Arduino.

The Connections are (m1p) of the GSM Shield, to (A0) of the Microphone, with (D0) it does not work.
And (m1n) of the GSM Shield, to (GND) of the Arduino, and (GND) of the Microphone to (GND) of the Arduino.

The Probelm is the noise and the sensitivity of the Microphone.
Maybe I will try to reduce the noise by using Cable Clips Magnetic Rings.
And to adjust the Sensitvity of the Microphone, by using the Potentiometer.

Or perhaps using another Microphone e.g. :   https://learn.sparkfun.com/tutorials/electret-mic-breakout-board-hookup-guide

I hope this was helpful, for other Readers.

Or If you have some Options, thank you.

Have a good time

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