circuit connexion of potentiometer and external speaker

hi please i want to change the sound volume using potentiometer and a speaker with arduino.can you help me to do the connection circuit .thx in advance

kind regards

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shabaz over 1 year ago in reply to naimlion +3

Hi, There's just two or three wires on the potentiometer. I strongly suggest you just wire it up (in any way you think fit, you can google this), and see what happens. You'll learn more from that experience…
JWx over 1 year ago in reply to phoenixcomm +2

In the end it turned out that it was software task - potentiometer was supposed to drive software based volume control, which the author finally achieved...
shabaz over 1 year ago in reply to naimlion +1

Hi, You're not bothering me, this is genuinely the best advice I can think of. It's the best way to learn, just to try it, because in this particular instance, you're very unlikely to damage anything…

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phoenixcomm over 1 year ago

You just cant pick a random pot. The problem you have is called impedance. You need to know what the impedance of the speaker is. 4, 8, 16 ohms This part is an L-pad, Where the L-pads resistance has to match the speakers. There are also T-pads, Basically, the pad keeps the impedance constant value. so in an L-pad, there are two pots wired together like the letter L, so while one pot goes up the other goes down. if you want a more detailed explanation go to the wiki
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JWx over 1 year ago in reply to phoenixcomm

it has turned out that this is not a "speaker" but LM386 module with speaker (and builtin pot for volume regulation)...
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naimlion over 1 year ago in reply to JWx

so i change sound volume only with this blue knob ?i can´t change sound volume with my personal potentiometer connected to microbit?
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javagoza over 1 year ago in reply to JWx

Then this Arduino schematics will help

AKX00037-schematics.pdf (arduino.cc)

from Arduino Make Your UNO Kit — Arduino Online Shop
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JWx over 1 year ago in reply to naimlion

You can - simply add another potentiometer at the input :)
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JWx over 1 year ago in reply to naimlion

You can - simply add another potentiometer at the input :)
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