• on Miscellaneous Electronics
  • Published in issue 7/2007 on page 0
About the article

IR Close Object Detector

Although ultrasound is well suited to detecting distant objects, it is quite unusable for closer objects, i.e. when the detection distance comes down to around a centimetre or less. Under these conditions, two solutions can be used: the bumper or similar device activating one or more microswitches — but that is still a mechanical solution — or the infra-red detector we’re suggesting building here, combining the elegance of electronics with freedom from any moving parts.

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