Pointer / Power Pulley

Building a Pointer / Power Pulley

The Pointer / Power Pulley allows a calculator to precisely control rotational motion by specifying the angular displacement and the angular velocity.

The Pointer / Power Pulley also provides a controllable 12-Volt output to operate low-current devices (such as the small laser pointer shown). In addition, there is an output for a hobby servo motor. Note: the 12-Volt output and the servo output use the same signal lines and therefore should not be connected simultaneously.

The system can be operated with the CBL2, the original CBL (using an adapter), or the LabPro. Since the LabPro has 2 digital ports, it can operate 2 Pointer / Power Pulleys.


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