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Nerd Alert! Answered

I am heavily involved in letterboxing. I've seen letterboxing posts here on instructables, but just in case it's not a familiar topic, it's a hobby similar to geocaching. Especially when we have events and get-togethers we will often engage in self-deprecating humor about our nerd status. For upcoming events I would like to create either of the following props, and would appreciate any ideas on how to approach them:

(1) Nerd Detector--some sort of box that would have some sort of motion or proximity sensor that would trigger an alarm, siren, etc., when approached.

(2) Nerd Tester--something akin to the "love tester" from old, old-school arcades. Someone would grip a handle, and some sort of meter or display would indicate the participant's (supposed) level of geekery.

Thanks for any ideas!!!

Discussions

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Goodhart
Goodhart

6 years ago

On the second one, it isn't hard to create a skin conductivity circuit that would run a meter and/or an LED/buzzer, etc. Anything that measures resistance could be modified for such a use if you didn't want to build it from scratch. On the first one, garage sales are your friend, and as caitlensdad says, one route is to use an old IR motion sensor. Another would be to use a circuit similar to the one I suggested for conductivity, but sense instead EM presence (this is much more difficult however). The proper ciruit would, especially inside a building or near power lines, the "antenna" that everyone is, and read from that.

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caitlinsdad
caitlinsdad

6 years ago

It should be easy to modify any of those off the shelf dollar store or Harbor Freight cheapo house motion detector alarm units. They have an infrared motion detector on those. The nerd tester would be any sort of conductivity tester. You can even repurpose a cheap multimeter and make up new dials/switchplate markings to detect the nerd level. Use the old magician's trick of wearing a magnetic ring(small super magnet superglued on the back of a steel ring) to activate a hidden magnetic switch to change the settings of your circuit when you use the device. Good luck.