Digital Potentiometers - Short Circuits Episode3

Digital potentiometers (variable resistors) with up down control signals. These can be used to replace the analog twist potentiometers and controlled by push buttons or micro controllers

Category:

Science & Technology

Tags:

• Potentiometers
• resistors
• circuit girl
• Jeri Ellsworth
• DIY
• Hobby
• electronics

[fivefishdiy]

Is there "zipper" noise with the digital pot? Couldn't hear well with the audio.

[jeriellsworth]

@fivefishdiy Yes. There are limited steps.

[ricky94533]

I just want to say that I'm in love with you @.@, ok beyond that, I just wanted to know how is this different from 3-wire? I needed 30k but it's super hard to find, I only found it in 3 wire, *hug*

[jeriellsworth]

@ricky94533 3 wire interfaces are handy for controlling by microcontroller.

[santiks]

it's a mono pot?

[jeriellsworth]

@santiks This one is. You can get different types.

[davidenelson]

WHERE CAN I BUY THIS PLEASE TELL ME!!

[apprenticemart2]

Are you going to show us how to do the same thing, but using and encoder?

[DIYGuitarMods]

This tutorial is so well done! Thanks so much. I've spent hours just trying to find out how digital pots are controlled via their inputs and this was very clear. I have a question which I hope is not too much trouble to answer but I understand if you are busy. Is it possible to use an analog pot to control this digital pot? If it is possible then could you possibly point me to some resources to learn. Cheers!

[daviddanielgraham]

PS... Jerrie in this video you are using up/down with push buttons... If you were using a UART for serial interface for a large number of pots (100-ish) would you prefer Up/Down, SPI, or I^2C? Thanks in advance for reading my post. Happy Trails to you! :D

[daviddanielgraham]

Thank you so much! I am in my first year of building electronics, and I have a modular analog synthesizer that I am building, and I am attempting to interface the units to the computer and adjust the controls with a custom UI I am programming in C#. I have been struggling to understand how to replace the mechanical potentiometers in the circuits with digipots and this is the first tutorial-esque approach to DigiPots I have encountered. The information you have presented is quite useful.

[1dosucol1]

Excellent stuff !Just what i was looking for,as i'm after a 3 gang linear pot,can't find them in the UK and i don't want to use 3 singles,o 3 small trimmers (1 behind the other,with a small rod going through each for adjustment.

[mirabilis]

Instant Remedy!

[fivefishdiy]

@jeriellsworth Is there a way to make an audio zero-crossing detector so the digi-pot would only inc/dec at the point where the audio signal waveform is at zero?