Extreme Pinewood Derby

A local group of guys decided to have a pinewood derby with no rules. The only stipulation was that we couldn’t cause harm to the track or spectators. We decided that this implied no combustibles. I knew the best way to win this would be some kind of CO2 powered vehicle. The bad news is that I was running out of time and didn’t know enough about CO2 valves to whip something up.

I decided to use the propeller, motor, and electronic speed controller from my Multiplex EasyStar RC Airplane. I also knew that only an autonomous vehicle would impress the crowd.

The track we were racing on held each car with a wooden rowel. The dowels dropped simultaneously to start the race. To make the car autonomous, I used a lever switch and the weight of the car to trigger an event to start the car.

The main controller of the car is an Arduino (yes, I know, I’m going against my own preaching). The Arduino held a simple state machine to control the motor. For safety reasons, I designed the state machine to only start the motor after the system had been intentionally armed.

  1. As a website owner I think the articles here is very good , regards for your efforts.

  1. No trackbacks yet.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

%d bloggers like this: