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Biking conversations on the world famous "Bangalore Bikers Club" :)
bangalorebikersclub.com
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Nice ... would be interesting to know how your set up compares to a Wahoo cadence sensor + Smart Phone.
Wahoo has a speed and cadence sensor that transmits speed / distance data ivia bluetooth to a smart phone and can be integrated with GPS data.
While the raspberry pi is efficient and uses a few watts of power, the smart phone is even more efficient and probably uses a fraction of a watt. Without a screen or leds, the raspberry pi is probably just as efficient as a smart phone.
On a smart phone, there is a lot that can be done with GPS alone – however, speeds and distance measurements have inaccuracies. While a cyclocomputer gives accurate real time distance and speed is measured at a high resolution (many times a second), most cyclocomputers don’t store the information.
A smart phone using GPS measures distance at a lower resolution (once in 5 or 10 seconds) and is inaccurate. If a smart phone and a cyclocomputer can be synchronized to the same time, then we will have accurate distance and speeds.
Unfortunately, pot hole data keeps changing – new pot holes emerge and old pot holes are hopefully fixed. Anyway, your data will show the rate at which BBMP is fixing pot holes.
--Manu Konchady
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Curious to know about the turn signals + accelorometer. I can understand the accelorometer controlling the tail light. But for turn signals, the signal needs to be given well before the turn to give traffic sufficient notice about the intent to turn. Giving a turn signal when one starts to turn (as detected by the accelorometer) is very late... though that is what many Indian drivers do. ;)
-{db}.