Low Cost Arduino Jammer 433 Mhz





Introduction: Low Cost Arduino Jammer 433 Mhz


In this project I will demonstrate the use of an arduino
as a jammer for the range of 433 Mhz using only 2 element´s

List of


-433 RF Module

Step 1: Project

For this project I use one breadboard but you can
simple connect the RF transmitter to the arduino, and also you can get the
power from the arduino board, I use 12 Volts.

The arduino will generate one square wave and it will
feed the RF module

I get the spectrum using one RTLSDR at the distance of
2 meters from the antenna

Step 2: Spectrum of the Arduino Jammer

Step 3: The Test

The test
was conducted using as an reference an CAR KEY, The typical spectrum of 433 Mhz
car Key is in figure A, the scale is in
db, the measures were taken using one RTLSDR Pen

Step 4: Where Is Wally ???

After I turn on the arduino and I press the car Key I get the spectrum of figure...

Where is the signal Key..

Step 5: Code

And now the best part .. the source code of arduino ;

void setup()

void loop()

tone(8, 15000); // generate square wave



design by Zerito.com (mail(at)zerito.com)



    • Space Challenge

      Space Challenge
    • Microcontroller Contest

      Microcontroller Contest
    • Spotless Contest

      Spotless Contest

    We have a be nice policy.
    Please be positive and constructive.




    How to jam 3g or 4g mobiles Sir ? Can u explain this following comment of yours

    triangle wave generator+noise generator-->vco max 2623-->rf power amplifer

    Dear Fprocyon:

    Could you please send me a e-mail with the RF amplifier diagram to increase the jammer range?



    You can increase the range of the jammer? using an amplifier?

    Yes i could, but it was not the primary objective in this project, you can change the 433 RF module and use one TX-SAW433/S-Z with one amplifier stage using one BFG135 transistor..mail me and i will send to you the diagram

    Hello, Can you send me the diagram?

    Hi Brothers.i am from turkey.firstly, i need gsm jammer project with arduino diagram and programme code for final project. Share with me ? İ cant speak well english but understand. :)

    Can you send me too diagram please.

    i need make GSM jammer for final year project. please send me arduino codes and RF module number.

    can u send me 900+1800 jammer codes

    Can it jam that signal of phone