This is our entry in the IEEE's 125th anniversary "Engineering Your World" video contest:
http://www.ieee125.org/celebra te/engineering-your-world/
which asks for "short videos demonstrating their use of science, engineering and technology to make their living spaces more livable, fun, convenient or futuristic."

For a longer version of this video, see:
http://www.youtube.com/watch?v =1mvZHN5ew5M

yaU3MRsOIfA

Curious about connecting a motor to your microcontroller? In this NerdKits video tutorial, we explore motors from an electrical perspective, and see how back EMF, resistive, and inductive considerations lead to the design of a motor control circuit. Finally, we show two demos, one with a motor controlled with a toggled digital output, and the other with pulse width modulation (PWM) to adjust the speed in proportion to the temperature.

For more details, source code, and more, see:
http://www.nerdkits.com/videos /motors_and_microcontrollers_1 01/

WnWJki-zwsE

To passionate chefs, cooking is an art. Knowing exactly when a cut of meat is cooked to perfection requires knowing your meat and your grill. But with a little bit of technology, we can build a digital meat thermometer, and use digital signal processing techniques to get a much faster response. This video explains how we can use the predictably slow heat transfer inside the temperature probe to mathematically model the sensor, and ultimately get a much faster response, with a little bit microcontroller computing power!

For more information check out the tutorial at http://www.nerdkits.com/videos /meat_thermometer/

1mvZHN5ew5M

The nerdkit's great! Hey, check out part one if you hadn't already: http://www.youtube.com/watch?v =SBvU7nGc0yU

ywd1MCo1J5I

www.nerdkits.com Check it out! Code comin' soon!

SBvU7nGc0yU

This project demonstrates a minimal piece of code that shows how to use interrupts, as well as the ATmega168's onboard Timer/Counter modules, to divide the 14745600 clock cycles per second down to just 100, and to keep time accurately in seconds.

For more information, including source code, see:
http://www.nerdkits.com/videos /realtimeclock1/

Q6SrXPlJV40