DIY Cell Phone Detector.

About: I am a student. I love to make electronic projects. You can visit my blog at http://homemadelectronics.blogspot.com

When thinking about cell phones. I got a idea of making a circuit which is capable of detecting the phone's call and message. It may be incoming or out going.

The project made is a cell phone detector which is capable of detecting the 2g,3g,4g cell phones and its signals.

This project is cool to play with and very useful to teachers so that they can find the student's who are using cellphone inside class room.

Step 1: Get All Components.

TransistorBC548
Buzzer
Green led
Red led
Slide Switch
Zero PCB
5 inch long copper wire

Capacitor :
22pF
22pF
0.22pF
100uF
47pF
0.1uF
0.1uF
0.01uF
4.7uF

Resistor :
2.2M
100K
2.2M
1K
12K
15K
1K

Integrated circuit (IC) :
CA3130
NE555

Step 2: Find Schematics.

Step 3: Place Components.

Place all the components on zero PCB as shown.

Step 4: Solder Components.

Connect all components and solder them according to schematic .

Step 5: Power on Your Circuit and Test It.

Now your cell phone detector is complete.Now you can detect active cell phones.

Step 6: Research

For more info visit my site just click on the link below

Cell Phone Detector Details.

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    2 Discussions

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    Alex in NZ

    8 days ago

    Nice. I like the way you've drawn the circuit on the upper side of the perfboard. Thank you for sharing the design :-)

    1 reply