On Mon, Apr 28, 2014, at 06:39 AM, Isaac Marino Bavaresco wrote: > The attached circuit (PDF) shows how to implement an SPI-like slave (it > works with an SPI master) with a 74HT/HCT595 that uses just two pins of > the PIC. Hi Isaac, Pin 10 - \SRCLR on your schematic is shown tied to ground. Shouldn't that be to VCC? Else it would always keep the shift register in reset. Friendly regards, Bob --=20 http://www.fastmail.fm - Send your email first class --=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 .