Containing little more than an application-specific encoder chip, keyboard, and IR LED, they’re of little use unless you happen to have another device that uses the same encoding scheme.

Ams Osram has announced IR:6, a new IR LED architecture with 920nm technology that is said to ensure an optimised balance ...

He ended up building his own magnetic rotary encoder which is shown above. At the heart of the system is an AS5043 magnetic rotary sensor. The chip, which runs from $6.50-$11, can detect and ...