Here is the circuit of a little label sensor ideal for detecting labels on bottles. The circuit offers a peak sensing distance of 2.5 mm (operating range 0.2 mm to 15 mm) backed up by the proven ...

Central nervous system (CNS) diseases such as Alzheimer's disease (AD) manifest early at the microscopic (i.e. cellular) level, deep in the brain. Yet, optical microscopes that can see cells in the ...

Sometimes we need a non-contact liquid level sensor. There are several ways to build that, but the easiest is to try an optical liquid level sensor. You may already have an idea in mind since you are ...