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DTMF Decoder
DTMF Decoder


  DTMF Decoder

Uses MT8870 DTMF decoder and PIC microcontroller to decode telephone tones.


DTMF Decoder



DTMF Decoder


Downloads

Project documentation

HEX Program
DTMF Decoder - Link

 

Build your own LC Meter and start making your own coils and inductors. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils. LC Meter can measure inductances starting from 10nH - 1000nH, 1uH - 1000uH, 1mH - 100mH and capacitances from 0.1pF up to 900nF. The circuit includes an auto ranging and "Zero Out" function to make sure the readings are as accurate as possible ... [more]


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