Digital Potentiometer

[atntias]

Hi,
Im currnetly working on a project and I needed to use a digital resistor VIA lpt port (Basiclly I need to control variable restistor 5k throw pc in any way)

Well I am far from really kwnoing what im doing so I looked around and found this component (https://www.analog.com/UploadedFiles/Data_Sheets/4789813AD5161_0.pdf)
Wich seems to be perfect for me.
I understood that if I want to contorl it Via LPT I need to use I2C wich is not that hard to program.

[Till Here BackGround And now For Problems]

Note : ^I Dont have too of mony to invest in this therefore im look for the best way to do this with lowbudget^

1. Do I Need Any External Hardware Besides The Actual Part?! (any info or referance about the hardware conecting will be usfull)
2. Are There Any Other Way To Do This("Control variable restistor 5k throw pc")?
3. Any info ideas commnet questions and il be greatfull for the help :!

In Great Thx -AtNtIas

 

[BeeBop]

Hello,
There are a few similar parts, DS has the DS1669 and you can find more info on using them on the Dallas-Maxim web site:**broken link removed**
Microchip has the MCP41xxx and 42xxx parts.
You shouldn't need more than a couple of resistors, I don't think, but I have used them with micros, rather than the PC ports.
Best wishes,
Robert

 

[Nigel Goodwin]

Hello,
There are a few similar parts, DS has the DS1669 and you can find more info on using them on the Dallas-Maxim web site:**broken link removed**
Microchip has the MCP41xxx and 42xxx parts.
You shouldn't need more than a couple of resistors, I don't think, but I have used them with micros, rather than the PC ports.
Best wishes,
Robert

If you google you will find plenty of parallel port I2C interfaces (and the software for them), a couple of resistors is the minimum you need - but it's probably sensible to add buffering as well - you don't want to kill your parallel port!.

 

[atntias]

First Thx for Ur Ateention.

I understand You Said I only need few resistors but wich and where ?! how is the connection looking?!

This is the component can u just tell me how the schem look like?!

https://www.analog.com/UploadedFiles/Data_Sheets/4789813AD5161_0.pdf