This is the complete detail you can have to create your own Global Robo that can be driven by sending DTMF tones from your mobile phone!!!!!!! "" Yes!! your mobile phone""
All you need to do is to have a DTMF tone decoder IC and some capacitors and resisors to complete the circuitry along with two mobile phones and a headphone for inputting the DTMF tones into the circuitry and you are done.
The complete list of bill of materials is provided below along with the circuitry with a little explanation of how the complete circuit works.
Bill of Materials:
MT8870 dtmf decoder ic
100k resitor 2pc.
300k resistor 1pc.
3.57945Mhz crystal oscillator
0.1 uf capacitor 2pc.
4 LED
connecting wires....
Working: while the input from the mobile using a headphone is connected b/w the 0.1uf capacitor and the ground, DTMF tones can be transferred to the decoder ic(8870) and once the ic is powered up the o/p can be seen by connecting LED's at Q!, Q2, Q3 and Q4 o/p of the decoder ic.
The output on the Q1 to Q4 pins of the decoder IC has been shown in the image.
the o/p of the decoder ic then can be connected to a motor driver ic like(L298 or L293D) to drive some motors or relays as a switch to operate some devices remotely as the Mobile phone connected can be called from anywhere in the world and by pressing the keys the DTMF tones can be transmitted to the receiving end mobile and hence any device connected can be operated globally.
As soon i get a camera i will Upload the image of my circuit and the robo i made and operated using my mobile phone.
No comments:
Post a Comment