Land Boards - Digital Multi-Turn Pot

Made a digital replacement for a multi-turn potentiometer with some distinct advantages (and some disadvantages).

[amitpatel_iot]

Thanks Land Boards for share this. I face this zero resettable problem from a long time . I thinks it works.

[paulmanhart]

Ok. Finally a great video, but that doesn’t mean I understood it.
I have a variable speed controller for my dc treadmill motor. I’m currently using two pots (120k and 20k to equal the required 140k Ohms). This allows me to have a course and fine rpm control. But I’d rather have a digital pot or encoder.
The problem is I haven’t a clue how to do it.
I want a single turn with about 60 Ohms resolution.
What parts do I need?
How do I program it to get what I want?
I do not understand any of this.
Can you help clear it up for me?
Thanks,
Paul

[UpcycleElectronics]

It looks like you were using the MCP4131 129 step version. The MCP4151 costs around $0.20 more and is 256 steps :-)
I like your idea of creating a integrated replacement for a multi turn pot. I hadn't thought of that before ;)

[Yuēhàn]

Hi great project. can you please give me a link to download the code.

[mac_uk]

Maybe you could change the function of the switch so it changes the increment steps to finner & back on 2nd press?.

[hackinblack]

neat.but it acts more like a detent-click pot.i would go with the 256-step version and add a normal pot for 'fine' control to cover all bases. It would be great to cover multiple pots with ONE controller;as they are all connected using an I2C bus (just a few wires for many pots) and only 1 pot is actually moved at a time...

[macmaniacal]

don't put a mechanical encoder on something like a power supply. If it fails, you may have erratic output.