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problem with Sharp IR Sensor -GP2Y0A21YK0F

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mondo32:
hi everyone  8)
i bought one of Sharp IR Sensor -GP2Y0A21YK0F .... and it looks easy to use 3 pins vcc , gnd & signal ....
but when i try it it has no response for changing distance .... Have i done something wrong here ?  :'(  .... please help i'm new in robotics and i definitely need some help
thanx alot guys

zwarte:
Check the tutorial you should Calibrate it first.

waltr:

--- Quote ---but when i try it it has no response for changing distance
--- End quote ---
What exactly did you try?
Start with a voltmeter on the Sharp sensor output. The voltage should vary as a detected object (or wall) changes distance.

What power supply are you using?
the Sharp sensor draws a bit of current (100mA) when it pulses its IR LED on. If the power supply voltage sags too much then the sensor doesn't work.

mondo32:
I used a 9 volt battery and then regulated by 7805 IC then connect +ve 5 volt to VCC wire of the sensor and the ground with GND , and connect the signal pin to the +ve side in the voltmeter and the -ve with the same ground of the circuit , and try to move objects front of the sensor and nobody's home 

mondo32:

--- Quote from: zwarte on November 10, 2012, 12:33:01 PM ---Check the tutorial you should Calibrate it first.

--- End quote ---
how can i do that ?? can you give me a link for calibration tutorial  ;D

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