Real rotary position encoders use Gray code to prevent slight misalignments and border cases from being a problem. For some people, the term Gray code (named after [Frank Gray], the inventor) isn ...

Rotary encoders are the bee’s knees. Not only do you get absolute positioning, ... There’s a problem with rotary encoders, though: it’s going to use Gray code or something weird, ...

Tracks on absolute encoders often are arranged to produce a binary output called Gray code. The advantage of Gray code over straight binary is that only one bit changes at a time.

This is because Gray codes are named after Frank Gray, who patented their use for shaft encoders in 1953. You can find a really Interesting Paper on this at www.faqs.org. One way to avoid this problem ...

Good grief. Ever since I published last week's “How To” on Gray Codes, emails have been flooding in containing all kinds of interesting tidbits of information. For example, one reader informed me that ...