Kostas made a pretty sweet mod to his motor bike. He’s come up with a cool way of sensing the spark via an inductive spark plug sensor. With that information fed into his Arduino, he can calculate the RPM of the motor and display it via 7 segment displays.
Some LEDs are used to indicate shift points just like a drag car. A Dip switch panel is used to set the shift points.
There’s a video after the break demonstrating it in action.
Kostas has a video of his setup attached to his motorbike. It’s still breadboarded but hopefully he is going to put it down on some stripboard and maybe some weatherproof shielding.
Kostas has some more pictures, schematics and source code up on his site.