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Topic: Sensing Speed of a Bike (Read 78 times) previous topic - next topic

VidsterBroyo

Hey guys!

I'd like to know if there's a sensor that detects the speed of itself. I would use it to sense the speed of my bike. I'm a noob so sorry if this is a dumb question.

Thanks in advance!

Railroader

Use a NEO6M GPS sensor and an Arduino, or a magnet on a wheel and count.
Use Your knowledge. If that's not enough, look for education.
Having knowledge, think outside the box to gain more of it. Only trains run like the train, on the rails. The rest run between the rails.

SteveMann

#2
Oct 13, 2019, 11:35 pm Last Edit: Oct 13, 2019, 11:36 pm by SteveMann
I've seen Inertial Navigation Modules on breakout boards, but I don't know what they would do for stabilized speed.

Railroader

Magnet, a Hall sensor and an Arduino...… Maybe also a display?
Use Your knowledge. If that's not enough, look for education.
Having knowledge, think outside the box to gain more of it. Only trains run like the train, on the rails. The rest run between the rails.

VidsterBroyo

Thank you for your replies. I was also wondering if it's possible to use a 3-axis accelerometer to find speed.

Railroader

I would say No to using accelerometers. They will in theory show zero at constant speed.
Use Your knowledge. If that's not enough, look for education.
Having knowledge, think outside the box to gain more of it. Only trains run like the train, on the rails. The rest run between the rails.

GoForSmoke

Thank you for your replies. I was also wondering if it's possible to use a 3-axis accelerometer to find speed.
You could get a pretty close approximation on a straight and level ride, when you stop it might say you haven't quite stopped.

Going up or down a slope, how is it to tell acceleration due your effort from gravity vector? When turning the front wheel contact shifts slightly, the frame pitches down slightly but enough for an accelerometer to be affected.

1) http://gammon.com.au/blink  <-- tasking Arduino 1-2-3
2) http://gammon.com.au/serial <-- techniques howto
3) http://gammon.com.au/interrupts
Your sketch can sense ongoing process events in time.
Your sketch can make events to control it over time.

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