Hi,
I have seen a number of amazingly simple and basic robotic concepts and designs from Ryan and the cellbots.com team.
I would like to add another simple if not simpler method of sensing for robots, to members of cellbot goggle groups.
Besides microphones, infrared, range finders etc, a basic sensor for use in robots would be the use of a "torque sensor".
The circuit basicly detects a jump in current in the motor/servo when the robot is stopped by an obstruction such as a wall or object.
The resulting increase in voltage due to torque causes the sensor to activate a pre- programmed response or action. This could be easily integrated in current mobile robotic systems.
Please find attached my photo of a basic torque sensor chip.
Though I'm sure members of cellbot google groups should be able to make a basic version with just a few electronic components.
Regards
Nobert.
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