Digital Potentiometer question

[zedder]

Dear All,

I am new here and I have a question concerning the protocol to be used with digital potentiometers for the purpose of "upgrading" a very old non-midi synthesizer to a midi compatible one.

The aim is to not change the original electronic schematic and to replace the analog potentimeters with digital potentiometers and to have these digital potentiometers controlled by a PIC.

But... there are at least 35 analog potentiometers to replace by digital ones and I don't know which protocol suits best for this job (I2C, SPI, other....) ?

Does someone has experience with this ?

Many thanks in advance !

Zedder

[stryd_one]

Hi Zedder,

You should try the search engine mate :) Look for 'digipot' and 'MBFX' here and in the wiki, and you will find lots of information, including a ready-to-use driver.

Hope that helps :)