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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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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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Tumbnail: 62 oz-in NEMA 17 Stepping motors (also called stepper motor)

NEMA 17 Stepping Motor (62 oz-in 5mm single shaft)

$19.95 Out of Stock
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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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A General Description of a System of Parts for the Constant Vacuum Source

The constant vacuum source is a system that maintains a vacuum within a tank. The vacuum is created by a motor and pump (vacuum pump) that is connected to the tank. The vacuum pump is actuated by a microcontroller and relay that uses a pressure sensor to sense the amount of vacuum in the tank. When the tank looses vacuum of 15 inches of Hg (Mercury) or more, then the motor will turn on and will climb to 25 or so inches of Hg.

The value of the low andn high thresholds for inches of Hg that is desired inthe tank and the amount of vacuum in the tank is shown on an LCD. Two potentiometers are used to adjust the low and high vacuum thresholds.

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