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Posts filed in ‘prototype’


Manholes Design – First Sketches

Mar 2009
25

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Cellphone Detector – Circuit not working yet

Mar 2009
18

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Motion Sensor for PhoneBooth

Mar 2009
18

Trying the figure it out which sensor is best for track people on the street. Playing with IR sensors, PIR and sonar. Going to take them to the park and test it around on the streets.The solution could be to use them together.

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Painting Materials – Test

Mar 2009
18

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Hacking a Phone Handset to play Mp3

Mar 2009
18

Based on an article on Make Magazine vol.16.

1.Open the earpiece on the headset
2.Cut the wires and change the speaker ( the old speaker are not tuned for MP3)
3.Solder the 2 wires of the speaker
4.Find the terminal plug inside the phone itself. Is contains 4 wires ( 2 for the earpiece, 2 for the mouthpiece)
5. With a multimeter see which wires connects to the speaker and then mark each wire.
6. get an audio connector and solder those two wires to it. One is ground; other is left or right channel – choose one.
7. It’s done!! Now connect the audio plug to your Ipod and listen the sound into the handset

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Sensing when the Bus Arrive

Mar 2009
18

To detect when the bus arrives, there are two possibles ways: sensing the sound or sensing vibration using an accelerometer. Both circuits are build and connected to a datalogger ( LogoMatic V2).

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Next: Test both sensors in the street + graph Data


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