I've seen EEPOTs with SPI and up/down pulse controls. It may be cheapest to use an 8 pin PIC to do the interface. When there's a programmable part in our systems, they generally like to have a field update capability, which further complicates things. But, I may be able to get by with a fixed program part here. It would be nice if that circuitry were integrated in the eepot, but I guess not many people need that. This is used in a "bypass" circuit when the main processor has shut down for some reason. Just some way to get audio through the system and be able to use the front panel volume control (encoder). Thanks! Harold > Harold, your question is weird. > The EEPOT needs usually a serial interface. > The quadrature encoder need a programable part to read it. > Since both need a microcontroller, why don't you use it? > > Vasile > > On Sat, Mar 7, 2015 at 2:46 AM, Harold Hallikainen > > wrote: > >> Is anyone aware of a quadrature encoder interface chip that acts like >> the >> typical quad encoder state machine to throw out invalid stuff due to >> contact bounce? I want to drive an EEPOT with an encoder without >> throwing >> another programmable part in the circuit. Or, perhaps there's an EEPOT >> that can directly connect to an encoder? >> >> THANKS! >> >> Harold >> >> >> >> -- >> FCC Rules Updated Daily at http://www.hallikainen.com - Advertising >> opportunities available! >> Not sent from an iPhone. >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 FCC Rules Updated Daily at http://www.hallikainen.com - Advertising opportunities available! Not sent from an iPhone. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .