Potentiometer question

Other Hardware General Electronics
1

Hi! I'm new to Arduino and new to the forum.

I'm working on a project that uses a mic and led strip lights. The mic I'm using (Amazon.com) has a little gain set screw on it to adjust the sensitivity.

I'd like to externalize the same feature with a potentiometer and a knob so I can more easily adjust the mic's sensitivity.

I've wired up pots before for guitar electronic projects before. I'm assuming this would basically be the same thing, just wired to the mic's out line.

What I don't know is what sort of resistance I should be looking for in the potentiometer.

Guitar pots are mostly all 500k ohm. Is that right for this mic?

2

Its directly to the output from the opamp from the pictures, just use 10k log.

500k in a guitar amp is not suitable as this little microphone breakout is not using valves!!

3

Hi,
If you look closely at the pot it will have a value stamped into a metal part.
Probably 102 or 10k. this is a 10K pot.
trimpot111.jpg
Or
When you remove it measure it with a DMM.

Tom.. :slight_smile:

trimpot111.jpg

4

TomGeorge:
Probably 102 or 10k. this is a 10K pot.

Isn't 102 a 1k not 10k? You mean 103? Either way, there's almost always a 3 digit code, first 2 numbers then a 10 multiplier.

5

wilykat:
Isn't 102 a 1k not 10k? You mean 103? Either way, there's almost always a 3 digit code, first 2 numbers then a 10 multiplier.

Yup...... :o :o :o
(Good to see someone is paying attention. Just think people might learn something... :slight_smile: :slight_smile: :slight_smile: )

6

I learned something here for sure