### Author Topic: VERY SIMPLE QUESTION!  (Read 935 times)

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#### rockrobotics

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##### VERY SIMPLE QUESTION!
« on: March 11, 2010, 10:05:30 AM »
Hi,

I'm very new to electronics and to robots and I want to know
how you connect the three pins on a potentiometer!  I know this is really simple to you experts, but please explain it to me.  I don't get why it has three pins!  Please help.

Thanks,

Newbe
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#### dellagd

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##### Re: VERY SIMPLE QUESTION!
« Reply #1 on: March 11, 2010, 08:59:30 PM »
this diagram explains it well

just attach your wires to the first and second pin and then there you go! a variable resister.

Now for explaining:
there are three pins so you could mount your potentiometer in a certain orentation and select if you want it to have the most resistance in the far-most left position or the least resistance

just for future reference I just googled "potentiometer diagram" and it was on the 1st page
as this would be easier than waiting for us to respond.
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#### rockrobotics

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• Posts: 46
##### Re: VERY SIMPLE QUESTION!
« Reply #2 on: March 12, 2010, 04:01:25 PM »
Got it fobey joebey!
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#### Pratheek

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##### Re: VERY SIMPLE QUESTION!
« Reply #3 on: March 14, 2010, 03:28:42 AM »
how you connect the three pins on a potentiometer!

That actually depends on what you want the potentiometer to do.

If you want to use it like a variable resistor, then follow what dellagd said.

If you want to produce a variable voltage using a potentiometer, then connect the outer two pins to power(Vcc and Gnd) and you will get the output voltage at the center pin, which can be varied by turning the potentiometer's knob.