There's a type of Gray code which is particularly useful for small-scale rotary encoders: a single-track Gray code. The idea is to find a code where the sequenc

There's a type of Gray code which is particularly useful for small-scale rotary encoders: a single-track Gray code. The idea is to find a code where the sequences for each position are cyclic shifts of each other. Then you can use a single "track" with arms at different angles, rather than multiple tracks with a single arm. http://sciyoshi.com/2010/12/gray-codes/#single-track http://sciyoshi.com/2010/12/gray-codes/#single-track