Hi,
Two questions about motion detectors.
2) Are there motion detectors sensitive enough to detect the motion of a common house fly ?
Can you provide any sites that discuss such devices ?
Thank, Jim
First, define what you mean by "motion detector." A device to detect motion can be as simple as a string...or as complicated as an international network of gigawatt radars and supercomputers.
If you refer to yard lights that are activated by "motion" in front of their detectors: These are called PIR (passive infra red). The sensors inside (disassemble one!) are often a single IC in a transparent package with an integrated lens, sensor, and processing circuitry. Given the right power and a few resistors and caps to set levels and times, it will drive a small relay directly.
Detect a fly? Probably, if it is close enough. Easy enough to test. webpa
Yeah, at 3" a normal PIR minus the lens will work . :) With a beam stopper of course .
-A
Have something to add? Share your thoughts — no account required.
Ask the community — no account required