I was just surfing the HiTechnic Website when I found that they have released a new sensor. The Electro Optical Proximity Detector or EOPD is used to ...accurately detect objects and small changes in distance...
The sensor has its own internal light source so it won't be disturbed by external light signals. Objects can be detected from distances up to 30 cm. Has anyone got or tested this sensor - if so please comment and share your experience with the rest of us.
Anders