[chbot] DC Motor Speed and Direction Sensor.

[Chris Hellyar]

What happened to using a simple tach or hall effect device?  Both give
the same result with easier hardware design...

However, given my penchant for re-inventing the wheel at the moment, it
sounds like an excellent idea!

Isn't it going to reduce the performance of the motor introducing the
nail/metal bit in between the magnets?

On Fri, 2008-02-29 at 06:47 +1300, Richard Jones wrote:
> It occurred to me that a DC motor could be modified by adding a 'u' 
> shaped bent nail and coil protruding into the case between the magnets 
> to sense the rotor turn speed and direction. Anyone have any 
> constructive thoughts on this before I start destroying motors?
> 
> Cheers
> 
> Richard Jones
> 
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