ENGR2210        4 September 2012

Lab 0.5 - The Bike Light Extension

Due: 10 September 2012

Description

In this extension, you will build upon the bike light from Lab 0 by adding an analog light sensor - a photoresistor - to your light.  You will make your bike light react to the presence or absence of light, much like “automatic car headlights” when entering a tunnel.  You can make this as simple or complex as you see fit.

• You could make your bike light when the button is pressed, ONLY if it is dark,
• you could have your bike light blink faster when it’s dark,
• you could make your light dimmer at night, and brighter during the day, to save battery, or
• you could do something else!

Lab 0, and this extension, should be written up by class time on Monday.

Notes

  Photoresistors act like a resistor, with a variable resistance based on the brightness.  How could you measure that?