Cell phone call detector

It is almost a magnetic flux detector...
http://www.badongo.com/pic/4603477

Category:

Howto & Style

Tags:

• cell
• phone

[GotspoonJDM]

What frequency does this detector work at? I am curious if it works with all cell phones are just certain ones. - Thanks

[rogerable]

@GotspoonJDM I tried with GSM and I think it is the preamble of GSM system(seem to have audio frequency envelops) be received by this circuit.

[ramzansmart1]

i like your circuit very much , , i'm also working on this project in my school , could you send me the complete circuit diagram, and the value of its parts?

[rogerable]

I posted the link to the schematic at the upper right description of this video. The value of parts varies from place to place. You better check yourself. But I think it shouldn't be too expensive coz all are common parts.

[HippyBunny]

I want to make one but the coil is too bulky< can i fold it smaller?

[rogerable]

@HippyBunny You can try any coil you got. Maybe different ones also work

[TheDarkAlfany]

GAAAYYY MUSIC

[ryaj0986]

your link is not working "badongo.com/pic/4603477" any alternate sites or mirrors?

[1kuhny]

Am I the only that saw the 300 pin ic

[bhushansmali]

i want to make coil. please me. give the instructions

bhushan

[razberryboy]

how do i make one?

[shezi79]

@jakleit hgi

[shezi79]

hi rogerable , the link you posted is not working...... can u send me an overview picture or ur ckt.....???? plzzzzzz

[jakleit]

I followed your circuit exactly, couldn't get it to work though. Looks like you have the Red connected to ground ??