Jables
Newbie level 1
Hello Forum,
I am new here and hope that you can help me with my problem.
I researched for a solution to my problem and stumbled across this thread:
https://www.edaboard.com/threads/336882/
The user described a problem very similar to mine, but unfortunately the thread was never continued and I couldn't find out if the proposed solutions worked.
Since I am an absolute beginner to electronics and had some trouble understanding what the source of the problem was and how to solve it I started this thread to hopefully find a solution and I understand an that is working.
To my project:
I have an Arduino Uno board and connected to it is a regular button, 2 ir sensor module and a DFPlayer Mini Mp3 player board. A PAM8403 amplifier board is connected to the mp3 player and eventually to a speaker. The test setup is done on a breadboard.
(The final version will include a seperate amp for each output of the mp3 player and 3 speakers but lets start with one)
The button and ir sensors work as switches that control the song that is being played by the mp3 player. I used IR sensors in order not to have a physical button.
All modules run on the same GND. If I run the board without the amplifier everything works perfectly, no noise.
If I add the amplifier I have several types of noise.
First is a general noise like a constant "hissing" sound.
Second is a loud constant noise once the board is done initialising.
Third is a noise that is caused once I press the button (interestingly NOT if I activate the IR sensors)
If I run the amplifier on a different power source the second noise disappears but the first and third remains.
Therefore I assume that it has something to do with the signal connection from the mp3 player to the amp.
The power I am using is a usb power bank.
Eventually I am searching for a solution that eradicates all noise and runs on a single power supply.
Since I don't know how to draw schematics I added links to all the parts I am using and hope that it is understandable.
I connected the MP3 Player to the arduino in the way shown in this tutorial:
https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Tutorial
IR Sensor
**broken link removed**
Button
**broken link removed**
MP3 Player
https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299
Thanks a lot in advance for your help. If any questions remain I will try my best to answer them all.
I am new here and hope that you can help me with my problem.
I researched for a solution to my problem and stumbled across this thread:
https://www.edaboard.com/threads/336882/
The user described a problem very similar to mine, but unfortunately the thread was never continued and I couldn't find out if the proposed solutions worked.
Since I am an absolute beginner to electronics and had some trouble understanding what the source of the problem was and how to solve it I started this thread to hopefully find a solution and I understand an that is working.
To my project:
I have an Arduino Uno board and connected to it is a regular button, 2 ir sensor module and a DFPlayer Mini Mp3 player board. A PAM8403 amplifier board is connected to the mp3 player and eventually to a speaker. The test setup is done on a breadboard.
(The final version will include a seperate amp for each output of the mp3 player and 3 speakers but lets start with one)
The button and ir sensors work as switches that control the song that is being played by the mp3 player. I used IR sensors in order not to have a physical button.
All modules run on the same GND. If I run the board without the amplifier everything works perfectly, no noise.
If I add the amplifier I have several types of noise.
First is a general noise like a constant "hissing" sound.
Second is a loud constant noise once the board is done initialising.
Third is a noise that is caused once I press the button (interestingly NOT if I activate the IR sensors)
If I run the amplifier on a different power source the second noise disappears but the first and third remains.
Therefore I assume that it has something to do with the signal connection from the mp3 player to the amp.
The power I am using is a usb power bank.
Eventually I am searching for a solution that eradicates all noise and runs on a single power supply.
Since I don't know how to draw schematics I added links to all the parts I am using and hope that it is understandable.
I connected the MP3 Player to the arduino in the way shown in this tutorial:
https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299#Tutorial
IR Sensor
**broken link removed**
Button
**broken link removed**
MP3 Player
https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299
Thanks a lot in advance for your help. If any questions remain I will try my best to answer them all.