![]() ![]() The module shows the state of the signal through onboard LEDs.Īs an idea you can connect up a mobile phone via 3.5mm to 3.5mm cable to the module. When the module receives the signal it is able to decode it and produce a binary output that can be used in other devices. The tone is a combination of two separate sine waves that produce a unique signal that can be transmitted or heard. This detection module interprets the incoming tone and produces a coded output that can be connected to all manner of microcontrollers.ĭTMF is commonly found in touch tone devices such as a phone. This component is ideally suited to adding dual tone multi frequency (DTMF) decoding to your project. ![]()
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