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Spy Tech: Polarized Hidden Messages
We all know sunglasses make any spy look cool, but these will let you see secret messages!

How to Make a Simple Chunky Wooden Planter
Just in time for spring, an easy-to-build planter.

The Dial-a-Speed: One Motor Controller to Rule Them All
The Dial-a-Speed is a DIY, one-size-fits-most speed controller.

Magnetic Hidden Messages
Hide a secret message in magnetic flux!

Hidden Message Zombie Detector
Use a slave flash to briefly illuminate a hidden message.

R/C Remote Drop Mechanism
Carry a toy (or pizza) high in the air and drop it from your R/C plane or copter!

Controlling a Lock with an Arduino and Bluetooth LE
Open a solenoid lock using the Bluetooth Serial Plugin and a Bluetooth LE board.

Arduino Bluetooth Programming Shield
Upload sketches to your Arduino wirelessly with a DIY Arduino Bluetooth Programming Shield.

Pizza Volcano
How to: Combining your favorite science fair project with your favorite food.

DIY Sriracha “Rooster” Sauce
Impress your chili-head friends by busting out this homemade Sriracha-style hot sauce!

Arduino Monsterbot
What can this bot do? What do you want it to do?

Vintage Bulb Lamp
Switch on the nostalgic glow with this dimmable, modern table lamp.