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From Opensprints

Welcome to the OpenSprints wiki!

Bringing Goldsprints to the masses! The revolutions will be digitized!

This wiki contains community-contributed instructions for building and running OpenSprints.

[edit] OpenSprints: Quick overview

Magnets attached to bicycle rollers trigger hall effect sensors connected to an Arduino microprocessor which sends data via USB to a computer that uses a digital projector as the display.

Light reflects off the projector screen through your cornea and triggers chemical reactions in your retina sending pulses through the optic nerve to the brain. The brain tells the legs to spin faster, thus completing the circuit.

[edit] Getting Started

What do I need to buy?
What do I need to build?
- Optional: Roller Platform (1 per bike)
- Hardware Assembly
  - Main Board
  - Roller Sensor Boards (1 per bike)
What do I need to install?
- Software Installation
What do I need to put on an event?
Where can I get help?
- FAQ
- Feature Requests

[edit] Other Systems

Why show other systems? This is a community, not a monopoly, so check out what else is out there. There will be nothing more cost effective than building your own OpenSprints system, but if you see "can't live without" features in other products -- give us a Feature Request.

Rollapaluza has a analog system similar to the systems of the 50s that they have designed and sell.
Navid Taslimi commissioned one of the first digital goldsprint systems to be made and has sold it to organizations like Goldsprints NYC. After nearly a decade with only minor improvements it has become a little graphically outdated, but an option none-the-less.
CompuTrainer MultiRider is an older commercial product that uses stationary bike mounts instead of rollers.
Tacx Fortius Multiplayer is a newer commercial product that uses stationary bike mounts instead of rollers. Racers can compete against each other online, there is even a Velodrome version.
FitCentric Web Racing puts you in a 3D velodrome with your opponents, but requires a computer per rider. The hardware mounts to the bike, not the roller. This is what the folks in Japan use.
Roller Fusion is a DOS application designed by Al Kreitler but they stopped selling it in the mid 90s. It is still in use by Greg Harper, of USA Cycling sanctioned roller races.
Coldsprints created an interface with some retro graphics, but fully modern features. Not sure if anything is for sale or will ever be released as open source.