Just completed building and testing electronics for the Yuri Touch Dro system.
Originally thought about using rotary encoders with 600 ppm operated by wire but when thinking more about it, resolution is too low.
Looked at glass scales with ttl output and wondering what is the pin 9 I see in many instances.
Can see 0v, 5v, shield connection, A and B outputs but the pin 9 has me stumped as to what it is used for.
https://ncmaster.com.au/ncmaster/ind...product_id=444