We’ll demonstrate this sensor using a single resistor and a multimeter. Sharp GP2Y0D02 fixed 80cm IR proximity detector (Digikey #425-2064-ND, $14.38). Datasheet (PDF). The GP2Y0D02 requires a ...

aperture and sensor. The depth of field in an image is the distance between the parts that appear in focus. When there's a big distance between the things that look crisp and sharp, it's known as ...