mean value theorem- gradient

Each year over a million people attend Maker Faires around the world, but few people get a chance to present at one. I'm going to share a little about my experience presenting at my local Barnes and Noble Mini Maker Faire so makers everywhere can learn how to be better presenters.

ZigBee, Bluetooth and the newer Bluetooth Low Energy (BLE/Smart) are all communication protocols for Wireless Personal Area Networks (WPANs), but they are optimized for different applications.

Monitoring the output of a light-dependent resistor, or photoresistor, allows the Arduino to know how light or dark it is. When the light falls below a certain level, the Arduino turns on a couple of LEDs.