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Frequency Detector using PIC 12F683 Processor
Passive Filter Circuits
iPhone Frequency Generator with Power Supply
DTMF BASED OBSTACLE AVOIDER ROBOT
Arbitrary waveform generator, for ~20$
OscilloPhone: Use your Smartphone as an Oscilloscope / Signal Generator
AVR acoustic spectrum analyzer
Signal Generation with MATLAB. Example of DTMF in telephony
How to Build and Tune an AM Radio
Posted:Mar 7, 2009
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