Top 3 Apps Similar to DTMF based home Automation

This App generates DTMF Tones of a 4x4 keypad and It can beusedinRobotics and Embedded Systems also . What isDTMF?Dual-tonemulti-frequency signaling (DTMF) is usedfortelecommunicationsignaling over analog telephone lines inthevoice-frequency bandbetween telephone handsets andothercommunications devices and theswitching center. The version ofDTMFthat is used in push-buttontelephones for tone dialing is knownasTouch-Tone. How it Works?The DTMF keypad is laid out in a4×4matrix in which each rowrepresents a low frequency and eachcolumnrepresents a highfrequency. Pressing a single key sendsasinusoidal tone for eachof the two frequencies. For example,thekey 1 produces asuperimposition of tones of 697 and 1209hertz(Hz). Initialpushbutton designs employed levers, so thateachbutton activatedtwo contacts. The tones are decoded bytheswitching center todetermine the keys pressed by the user.

Synopsis of DTMF decoder circuit project forelectronicsengineering.

many people were looking for an app tocontroltheir bot using smartphone tones....so i have created this app... and in case any one wants sourcecodefor this app...you can mail me at sapfubundy@gmail.com