Arduino class notes, class 3

Varieties of I/O devices

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Pull-up Resistors

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Labs

• circ-07 buttons.
• circ-11 relays.
• circ-05 shift register, multiple LEDs.

Bidirectional Motor Control with Relays

• one pair of relays (3,4) control motion
• one pair of relays (1,2) control direction
• smarts courtesy of JWZ

Interfacing to Computer

• coming up next week