Need help fot finding circuit diagram14

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shweta ahuja

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Need help fot finding circuit diagram

I need a ciruit diagram for proximity sensor or distance detector or safety for blind..any of this using mc 89c51..i've tried electronics garage but that has some issues..please mail
 
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U can use MPR121.I worked on it,but don't have complete circuit,as it was designed by my friend,will email you as soon i get the circuit
**broken link removed**
 

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