Content for MT8870D

MT8870D

The MT8870D/MT8870D-1 is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions. The filter section uses switched capacitor techniques for high and low group filters; the decoder uses digital counting techniques to detect and decode all 16 DTMF tone-pairs into a 4-bit code.

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Project  Gamepad decoder DTMF

Gamepad decoder DTMF

“Thanks to the MT8870 chip, connecting the outputs of STQ, Q4, Q3, Q2 and Q1 to a transistor allowing to open or close the buttons of a GAMEPAD, DTMF tones can be decoded. We only ineed 5 pins (control buttons …

Project  Phone Calling Arduino Robot Using Dtmf Decoder

Phone Calling Arduino Robot Using Dtmf Decoder

“hello guys.. our new and one of the best project phone calling arduino robot using dtmf decoder module based on arduino… What is DTMF?DTMF is a Dual Tone Multiple Frequency decoder module which has a MT8870 DTMF decoder IC …

Project  Cheap Wireless device to Control Arduino from anywhere in the world

Cheap Wireless device to Control Arduino from anywhere in the world

“#DTMF stands for DUAL TONE MULTIPLE FREQUENCY , in which we are going to use Mobile phone to make its as a wireless device, it works on the frequency which we generate on keypad of caller phone.”