ON 20021129@9:18:18 PM at page:
http://techref.massmind.org/techref/io/sensor/posd.htm
JMN-EFP-786 James Newton added 'Says
http://techref.massmind.org/techref/io/sensor/speed.htm
Speed sensors'

ON 20021129@9:20:57 PM at page:
http://techref.massmind.org/techref/io/sensor/speed.htm
JMN-EFP-786 James Newton added 'See also:
http://www.ezy.net.au/~fastvid/encoder.htm 
<PRE>(cached 20010413100503) Roman Blacks notes on using the back EMF spikes from the commutation in a DC motor for speed feedback. 
</PRE>'

ON 20021129@9:21:22 PM at page:
http://techref.massmind.org/techref/io/sensor/speed.htm
JMN-EFP-786 James Newton edited the page

ON 20021129@9:22:04 PM at page:
http://techref.massmind.org/techref/io/sensor/speed.htm
JMN-EFP-786 James Newton edited the page

ON 20021129@9:22:33 PM at page:
http://techref.massmind.org/techref/io/sensor/speed.htm
JMN-EFP-786 James Newton edited the page

ON 20021129@9:23:04 PM at page:
http://techref.massmind.org/techref/io/sensor/speed.htm
JMN-EFP-786 James Newton edited the page

ON 20021129@9:24:55 PM at page:
http://techref.massmind.org/techref/io/sensor/speed.htm
JMN-EFP-786 James Newton added 'Says
/techref/io/motor/regulate.htm
Motor Regulation'

ON 20021129@9:32:11 PM at page:
http://techref.massmind.org/techref/io/sensor/speed.htm
JMN-EFP-786 James Newton added 'Says
/techref/io/sensor/pos.htm
Position Sensors'

ON 20021129@9:41:11 PM at page:
http://www.sxlist.com/techref/io/sensor/posdif.htm
JMN-EFP-786 James Newton edited the page

ON 20021129@9:49:19 PM at page:
http://www.sxlist.com/techref/io/sensor/light.htm
JMN-EFP-786 James Newton added 'Says

For optical interruption sensors, don't forget your standard super low cost "mechanical" mouse!'