I'm working on connecting a digital potentiometer (MCP4132) to a BS2. I found the Basic Stamp II SPI to MicroChip 4131 Digital Potentiometer discussion which answers most of my questions but in the code there is mention of a 1k resistor on the signal line:
Datapin PIN 0 ' (SDI) Data = Pin 0 **USE 1K RESISTOR**
I do not see this used on other examples of SPI communications (SHIFTIN/SHIFTOUT). Anybody know what this is for?