electronic pot

[rommel2001]

Is there in this forum someone that have the schematics of electronic pot? I think that it's very important for the ground balance but it have a lot expensive price...22 Euro

[DarthCarl]

I guess I don't understand... is there a specific electronic pot you're looking for, or do you want to replace a standard pot with something cheaper?

- Carl

[rommel2001]

electronic pot

i seen it on a site and it is like the very old pot mounted on old tv and radio...
the schematics is

[Carl-NC]

OK, you have a microcontroller and digital potentiometer chip... this is pretty easy to make. What are you wanting to do with it?

- Carl

[rommel2001]

Carl i want to apply it on a ground so it will more stable and easy to set!

[Carl-NC]

If this is related to your question about the Silver uMax GB, I think you will find a 10-turn pot has better resolution and is easier and cheaper to add. Most digital pots have 256 taps which limits resolution. I guess you could gang two of them for 16-bit resolution but by the time you design and code it, the solder would have long cooled on the 10-turn pot.

- Carl

[rommel2001]

carl

Thank you Carl!!!!!!!!

[Tibuck19]

OK, you have a microcontroller and digital potentiometer chip... this is pretty easy to make. What are you wanting to do with it?

- Carl

Hi Carl , I know this is a very old post but perhaps you can still help , I have a working MMP I want to do KRinAZ mods, seeing how they need a few extra POT's plus the normal ones , I would like to use digital potentiometer rather then analog, so the wiper changes, could be done from a 16x2 LCD menu with a 4 buttons input, I feel like an idiot, because have no clue were to start with this project. I have the screens, I looked into Digital pot, there are the standalone or the SPI controlled ones im not sure which to use. I know how to upload sketch but have no experience with writing codes. Im not asking for any one to make this for me but where or how should I start.

[waltr]

Hi Carl , I know this is a very old post but perhaps you can still help , I have a working MMP I want to do KRinAZ mods, seeing how they need a few extra POT's plus the normal ones , I would like to use digital potentiometer rather then analog, so the wiper changes, could be done from a 16x2 LCD menu with a 4 buttons input, I feel like an idiot, because have no clue were to start with this project. I have the screens, I looked into Digital pot, there are the standalone or the SPI controlled ones im not sure which to use. I know how to upload sketch but have no experience with writing codes. Im not asking for any one to make this for me but where or how should I start.

You should start with a Development kit for the Processor you will be using. Since you said "sketch" that sounds like an Arduino which is a good processor system to start with to learn coding and control.
Also, lots of boards and support for the Arduino.
then spend several months learning how to code to get the arduino to do what you want.

As for digital pots:
They are great for some tasks and absolutely Horrible for other tasks which is why Carl asked his question.

[Tibuck19]

Yes indeed Arduino in mind simply because, I have a few Uno and Pro Mini's laying around, and there is a lot of tutorials out there, like you said digital pots can or can not be the right choice for all, which is what I'd also like to know from Carl. Some of the reading up I've been doing stats http://www.analog.com/en/technical-a...tiometers.html .But in all honestly ! I want to make this little menu thing but I don t want to spend my life on it either loll I do eventually want to be out and using the detect and not have to spend now till summer learning Arduino Coding.

[Digger429]

If 4 bits of resolution are ok, then you could just use a 4066.

http://mehtadhaval.blogspot.com.au/2...ng-cd4066.html

(or if you want to get fancy, two of the setups in series for 8 bits of resolution)

Having said that, there's a lot to be said for old analog controls when its a hot day out in the field and you just want to change the threshold value a little, to tweak the knob... as opposed to pushing the little button for menu selection, then selecting the threshold menu with up and down buttons then pushing select to activate it then changing the value with up and down buttons then pressing select to activate that then pressing return button a few times to get out of the configuration menu and then pushing a few more buttons to go back to the display screen you were at before.

[Carl-NC]

Hi Carl , I know this is a very old post but perhaps you can still help , I have a working MMP I want to do KRinAZ mods, seeing how they need a few extra POT's plus the normal ones , I would like to use digital potentiometer rather then analog, so the wiper changes, could be done from a 16x2 LCD menu with a 4 buttons input, I feel like an idiot, because have no clue were to start with this project. I have the screens, I looked into Digital pot, there are the standalone or the SPI controlled ones im not sure which to use. I know how to upload sketch but have no experience with writing codes. Im not asking for any one to make this for me but where or how should I start.

This is not a simple task if you don't already know how to write processor code. Unless Arduino has library functions for SPI, I would suggest a simple up/down digi-pot.