Please tell me the model and make of the phone that act as receiver. This is 5 year video and new phone seem to not have Auto Answer Call function. I need to buy the phone you use in this video.
hello sir. I have a prblm. I made a dtmf controlled cell phone operated robot. but when i connect the power supply to the inpt the 4 leds glow instantly and remains same no matter what i pressed in cell phone. I used CM 8870. plz gv me a solution.....
Use ic MT8870DE, and i think you must have problem in your connection. Please recheck it. your all led glows means all the leds are getting high pulse from somewhere. Either your connection is wrong or your IC is not working properly.
follow the diagram for wire connections and if you don't know how to connect on bread board here is the link which will help you ruclips.net/video/fQvA-uijmT0/видео.html
Take a 9V battery, connect the positive terminal of battery to pin(1) of voltage regulator ic 7805. connect the negative terminal of battery to pin(2) of ic 7805, pin(3) of ic 7805 will give you 5V output. or you can simply use 9V battery instead of 5V battery in circuit diagram, then also it will work, no problem.
Nice work
nice explanation...thank you!
اچھا بھائ دکان سے جو ic mt 8870 ملتا ہے
وہ ڈائریکٹ سرکٹ میں لگاسکتے ہے
یا کمپیوٹر پہ کوڈونگ وغیرہ کرکے پھر لگانا ہوگا?
?
Please tell me the model and make of the phone that act as receiver.
This is 5 year video and new phone seem to not have Auto Answer Call function.
I need to buy the phone you use in this video.
Awesome
thanx
Sir MT 8870 ic ka koi substitute bataye plz
Sir why have not use 0.47uf capacitor but given in circuit diagram
What is use of crystal oscillator in this circuit
hello sir. I have a prblm. I made a dtmf controlled cell phone operated robot. but when i connect the power supply to the inpt the 4 leds glow instantly and remains same no matter what i pressed in cell phone. I used CM 8870. plz gv me a solution.....
Use ic MT8870DE, and i think you must have problem in your connection. Please recheck it. your all led glows means all the leds are getting high pulse from somewhere. Either your connection is wrong or your IC is not working properly.
sir how to identify tip and ring if i get 3 wires red, green and copper by stripping headphone jack wire ?
10k ohm resistance parallel m add hote hai
Series m nhi
Sterio lead kon si use karni hay trs ya trrs
Sir sub led pahle se hi on ho rahi hai
Sir इस मे प्रोग्राम करना पडेगा, thank you in advance
Sir keu 2nd pres karne par 1st off ho jata
Sir can you please share how to connect the aux wire to the circuit..
follow the diagram for wire connections and if you don't know how to connect on bread board here is the link which will help you ruclips.net/video/fQvA-uijmT0/видео.html
sir please identify the value of capacitors and other components
0.1uf capacitor -2
22pf capacitor -2
3.579mhz crystal oscillator-1
100K reesistor -2
300k resistor-1
220 ohm resistor - 4
led -4
IC MT8870
Details of connection?
But sir in ckt diagram there is no connection of 7805 regulator. So how to connect it. Please replay
Take a 9V battery, connect the positive terminal of battery to pin(1) of voltage regulator ic 7805. connect the negative terminal of battery to pin(2) of ic 7805, pin(3) of ic 7805 will give you 5V output. or you can simply use 9V battery instead of 5V battery in circuit diagram, then also it will work, no problem.
Sir ye ic kisi circuit board m mil skta hi
Hi
Sir iski rang unlimited h please sir tell me
yes
please,give me the printed circuit diagram and the principle. thank
bhai project file dedo iska
Call kar sir ko
Nice work