Help -- I've lost a link to a Teensy article on the site and can't find it again

robedney

Member
Silly issue here: There is a great how-to article on the pjrc site about using a 74HC4051 shift register to expand input ports to the Teensy. I accidentally close the tab and can't find it now to save my life! I copied the schematic that is shown in the article (see below) but I need more direction and the sketch samples. Anyone know how to find it? I've tried searching every way I know how :)
schematic_ioexpand.png
 
Thank you! I'd forgotten that I'd found what I needed in a midi article! That's not my application, but it includes what I needed. You've saved what's left of my sanity.
 
The 4051 is an analog multiplexer, not a shift register, meaning it can route signals agnostic of whether they are
inputs or outputs. No shifting happens.
 
Back
Top