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As a part of my project work i was given a circuit diagram and also a program.
This is a small internal project so i was just asked to tell what the program does.
I am not able to understand the program.Please help me to understand it
Thank You
I have been able to complete the Circuit designing part for my project.I have also got the output building the circuit on the breadboard.
Now,I want to have this things done on a self made board.
I have been searching the Internet for guidance but nothing has till now helped me.
What i wanted...
sorry for the forum moderaters.was just too used to short messaging hence.
i dont know wat i am doing wrong.
3.5mm jack output is not at allshowig any variations,when idle and connected to signal dtmf or a music input.
what will be the real output under working condition ?
i dont knw if i am dnd andything wrong but i am not gting the led lit
is there anyway yo check if the chip is working ?mayb tats wat tat has gone wrong :-(
is there anyway that i can test the working of this chip...i dnt know why i am not gting any LED lit
---------- Post added at 13:37 ---------- Previous post was at 13:01 ----------
not working :-(
ya i do have 3.5mm jack
---------- Post added at 18:46 ---------- Previous post was at 18:45 ----------
but the circuit i did in the bread borad is not working i am not gting the led lit
ya i got hold of a working earphone...i cut the wire
the new problem is it has three leads and all three gving me an output voltage :-(
copper,blue,pink are the colours...
headphone from creative i broke open
u mean to say that i can remove that LM358 part of the circuit ?
The way you have guided me relies on opening the phone right,and getting the wires from the ear piece.
It solves a major part of the circuit but is there any other solution to this part without breaking open the phone ?
Hi guys,
I have been trying to generate a DTMF decoder over the mobile phone.I am not interested in Landline because my motive is to generate a circuit for home automation and mobile robot.So i need to have a system to decode the DTMF generated by the mobile phone recieving end.:?:
I am...
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