REFERENCE POINT

Tasks:

1. Add a switch to detect the reference point of the barrier gate. Let the reference point be the closed position of the barrier.

{#fig:barrier_reference_key}

1. Connect the switch to the controller according to schematics.
2. Change the program to lower the barrier gate to reference switch position.

Questions:

1. Why is detection of reference point important?
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Summary

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Issues:

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