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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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On Paper: A Brief Description of PWM on Creating a 20 ms Period and Non-Inverted Mode for a Hitec Hobby Servo

In non-inverted mode, the pulse is stared at the beginning of the period. The Period to match 50 Hz (20 ms period time frame), a timer/counter is used and the top value ICR1 is set at 19,999.

To set non-inverted mode, the COM1A1 is set and COM1A0 is not set.

The OCR value is set to correspond to the non-inverted mode so it is set at the low end of the timer/counter count. 2 ms would be equal to 2000. In inverted mode, the 2 ms would be equal to 19,999 - 2000 since the pulse is at the end.

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