And, capacitive displacement sensors are even found in disk drives. These sensors produce an output: capacitance. Measuring this capacitance is an inherently analog problem that can be very tricky.

As oscillation amplitude falls below the threshold, the level detector turns the sensor output off. Conductive targets affect capacitive sensors as well, but in a different way. When a conductive ...

Air acts as an insulator; at rest there is little capacitance between the two plates. Like inductive sensors, these plates are linked to an oscillator, a Schmitt trigger and an output amplifier.

The sensor output sampling rate is relatively slow—less than 500 samples per second—but high-resolution analog-to-digital conversion is needed to capture small differences in capacitance.

Capacitive sensors measure quickly. They are ideal for high-bandwidth ... Active systems are not subject to cable length constraints. They work at higher output bandwidths and higher frequencies. They ...

[rbaron] explains exactly how capacitive soil moisture sensors work simply, clearly, and concisely. He also shows, with a short video, exactly how their output changes in response to their ...

The sensors use capacitive technology for start and stop actuation, and are available with one of two sensing principles: dynamic and static. Models with the dynamic capacitive measuring principle ...

which changes the value of the capacitance. Humidity-sensor ICs such as that from Honeywell provide you with a digital output, making it a complete sensing system for embedded applications. As a ...

That’s what [Modest Maker] did and the resulting findings along with an attempt to beat the commercial system with some cheap capacitive sensors, are covered in a recent video that’s also ...