The Big Easy Stepper Motor Driver + Arduino

Stepper (or step) motors are really cool. They are perfect for automation or any time you need a motor to turn to a specific point, at a specific speed, in a specific direction. And, unlike typical motors, steppers are able to do all of this, and hold their position when they are not moving – The trade off is that they cant move as fast, and you have to power them at full power all the time, but you get total control in return.

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Sensing Humidity With The SHT15 + Arduino

The SHT15 is a digital humidity sensor that outputs a fully calibrated humidity reading. And… because what we are measuring is actually relative humidity, and relative humidity being relative to temperature, the SHT15 has a builtin digital thermometer. This makes things much easier to work with than sensors without a thermometer onboard.
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MQ-3 Alcohol Sensor, Breakout Board + Arduino

The MQ-3 is a heater-driven alcohol sensor that outputs an analog signal (usually interpreted somewhere between 150 and 1023 depending on how long you let the sensor warm up), which through the use of your Arduino code and calibration, can be interpreted for whatever use you need.
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How-to Create an Essay

The structure of writing came into being in 1929 when a band of businessmen, and anthropologists recognized regulations to standardize scientific writing. APA format handles heading size, syntax, HOWTO provide much more and data. If you have to produce a technological document, and are in college, and perhaps even high school, chances are you will should use format. APA – style can also be employed for scientific studies investigation reviews, methodological and theoretical articles and studies.
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