August 18, 2009 AT 2:00 am

DIY-Spy: a homebrew 2.4GHz wi-fi spectrum analyzer

Tim made a “DIY-Spy: a homebrew 2.4GHz wi-fi spectrum analyzer” – he writes…

I was reading the Thinkgeek catalog a while back and an interesting gadget caught my eye: “Wi-Spy”, a 2.4GHz spectrum analyzer on a USB stick. Coming from the world where “spectrum analyzer” refers to a big benchtop box with a name like Le Croyright, we can’t afford those Agilent on it, my first thought was, “A good spectrum analyzer in the GHz range is like a gazillion bucks; what’s really inside this thing?” Not much, it turns out. After seeing the guts I would not use this device for anything remotely demanding accuracy, but on the bright side, it would be pretty straightforward to make your own that works just as well! Possibly with parts that are already on your board (*cough*XBee).

Check out all the Circuit Playground Episodes! Our new kid’s show and subscribe!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground”Adafruit’s Apps!

Maker Business — From prototype to production of a 3D printer

Wearables — When it comes to wiring your neopixels, direction matters!

Electronics — It sure is crowded in here.

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

1 Comment

  1. See

Sorry, the comment form is closed at this time.