Automatic Bicycle Handlebar End Lights

Step 4 Form and Function...

To begin, gather all your materials.

The only part that will be difficult to source locally is the reed switch. I have 3 options for electrical components where I live: 1) Radio Shack; does not sell reed switches. 2) The local electronics place; wanted $8+ a piece for reed switches. 3) Mouser; shipped 10 reed switches to my door for about $12.

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Once you have begged, borrowed, or stolen all the parts on the list you are ready to start building.

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But wait...

A contractor does not start framing a house without first looking at the blueprints...
A doctor will not put your arm in a cast without looking at an x-ray...
So we too are going to take a few moments to learn a little bit about what we are making, and how it works before we begin building it.

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This page contains some pictures demonstrating the features and functions of the unit. These pictures are worth at least 1000 words.

_{The next step covers the construction of the circuit.}