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USB 2.0 Cable 10 Foot Type A Male to Type B Male

USB 2.0 Cable Type A Male to Type B Male - 10 FT

$4.80
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3 Foot USB Cable Type A to USB Cable Type A

USB Cable Type A Male to USB Type A Male - 3 FT

$2.65
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84 oz-in NEMA 17 Stepping motors (also called stepper motor)
Image of the Atmega324p

Atmega324P

$8.50
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10K timmer potentiometer

10K Trimmer Potentiometer (Through Hole)

$0.85
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16x2 LCD (Liquid Crystal Display)

16x2 LCD (Liquid Crystal Display)

$12.50
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White prototyping breadboard with 30 tie strips and two power rails on each side.

White Prototyping Breadboard (2x30 columns of tie strips and 2x2 rows of power strips)

$7.95
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Clear Semi Transparent Breadboard

Clear Prototyping Breadboard (2x30 columns of tie strips and 2x2 rows of power strips)

$8.50
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Red Through Hole LED (Light emitting diode)

Single Red Through Hole LED (Light Emitting Diode)

$0.34
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Programming: Creating a Global Variable

Positioning a variable or array outside of the main function allows this variable to be used within all functions. All variable positioned outside of the main function are called global variables and the scope of these variables are global, or able to be used anywhere in the program.

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