What type of sensor do I need to detect (not measure) the motion of a spinning cylinder at a fixed (<5cm) focal length under all lighting conditions? The cylinder cannot be altered in any way.
The purpose of this would be to drive a relay to wake up a gadget from a low power sleep state so it can operate when the cylinder starts moving, and then power it down to sleep mode when the cylinder stops. The less power the sensor draws the better. I think the device will be running 9v DC.
Thanks,
Gary
The purpose of this would be to drive a relay to wake up a gadget from a low power sleep state so it can operate when the cylinder starts moving, and then power it down to sleep mode when the cylinder stops. The less power the sensor draws the better. I think the device will be running 9v DC.
Thanks,
Gary