Fast PWM and electromagnetic interference

in Arduino by DP | 1 comment

2014-03-09-Fast-PWM-EMI-the-lab

Marios Andreopoulos writes:

A few days ago I wrote a blog post about Arduino and EMI. By using fast PWM and a plain breadboard wire, I was able to detect electromagnetic interference using a usb TV tuner, with its antenna near my circuit. Not only that, but by manipulating duty cycle to create a primitive form of amplitude modulation, I was able to transfer through EMI a very simple audible signal (few notes of one of the most famous riffs) in many frequencies and up to 1.76GHz

Via the contact form.

Check out the video after the break.

This entry was posted in Arduino and tagged , , .

Comments

  1. NsN says:

    Only 2 days ago I was wondering whether I could do primitive EM checks on my circuit with an rtlsdr dongle. Seems like it would work rather well.

Leave a Comment

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Notify me of followup comments via e-mail. You can also subscribe without commenting.