Velocity motorbike

[Mosquera]

Hi everyone!

I'm an amateur when it comes to circuits but I've just started up a hobby project. The aim is to construct a speedometer that will show the motor cyclist it's speed through three different LEDs showing different colours. Green, Yellow and Red. Green = speed below speed limit, yellow = you´re reaching the speed limit (warning!) and red = you´re going too fast!

Since my knowledge concerning circuits is quite limited I'm in use of anyone´s help.

I'm thinking about using:

Battery
3 LEDs
GPS
Light detector (to know whether to increase the LED's light or not)
Micro controller
A couple of resistors

I've added my schematic of how I think the circuit should be built.

Question is: what other components should be added?

Thank you in advance!

 

[alec_t]

Apart from an 'off' switch you've probably got enough components there, unless you're proposing to power the circuit from the motorcycle's battery; in which case you might well need a voltage regulator and associated smoothing/suppression components.