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His DTMF decoder box uses a CM8870 DTMF decoder chip, ... This was well and good, but he decided that an Arduino-driven LCD display would work far better. When he was finished, ...

His DTMF decoder box uses a CM8870 DTMF decoder chip, ... This was well and good, but he decided that an Arduino-driven LCD display would work far better. When he was finished, ...

Arduino Uno DTMF Decoder Motor Driver L293D A mobile with network and other basic components such as a power source i.e a 9V battery, jumper cables etc. For the connections, refer to the code. A dtmf ...