circuit connexion of potentiometer and external speaker

as you know if i succeed with arduino i can do it with my love microbit

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 than just asking for a solution. This isn't the sort of topic where much detail can be given since it's all highly dependent on what you're doing and what your expectations are. If you just give it a shot, it may meet your needs or it may not, and you'll learn the benefits and the limitations of what you're doing.

Going forward, you should definitely pick up a book on basic electronics, but for now why not just give it a shot, nothing much can go wrong. Obviously, use google to help you if you're really stuck figuring our how to make the two or three wired connections. 

Time to be a bit brave and just try it.

yes i tried and i will again

thx in advance and excuse me if i bother you shabaz

hive a great day

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.

That's how people learn the best; try something, and if the error is reversible, then try something else, and then try to see what the pattern or cause was (lots of science and experiments can work like that in some ways).

If you try it and don't get anywhere, share a photo or explanation of what you did and I'm sure people will make suggestions. Similarly with books/guides, there are plenty of suggestions if you want them.

What sort of speaker? Dynamic one can overload arduino pin if connected directly - it can have several ohm resistance (so series connected potentiometer can help limiting current, if never set to zero) - better add additional resistor in series so max. current draw from the pin will not exceed MCU limits...

hi again

i have this one

www.google.com/url

ok - so it's not simple speaker but module with amplifier and speaker... 

So - look at schematics on the page you have provided and do the same (connect your second potentiometer exactly as in input section of this amplifier - it may be 10kOhm [or maybe 1kOhm (but not less) - because when higher values would be used, control linearity will suffer - parallel connection of second potentiometer of similar value], with one contact to the arduino, another to the ground and middle one [connected to the moving contact]  - to the speaker module). Do not forget to set builtin potentiometer for max allowable volume.

If you are good at soldering you can even desolder builtin potentiometer and connect your own - I assume you want something you can operate without screwdriver...

hi please i connect my potentiometer to this speaker to control sound volume by microbit but i didn´t succeed .help please
i connected gnd of potentiometer to gnd of microbit ,vcc to 5v and where i will connect out pin

for speaker i connect gnd to gnd ,vcc to vcc and sig to p1 of microbit

help please thx in advance
regards

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

Have you ever had it working correctly? Only speaker module and microbit? And volume regulation using builtin potentiometer (this blue one)?