MQ-3 Alcohol Sensor, Breakout Board + Arduino

A lot has happened since our last article was published and to celebrate the continuance of bildr we’ll be playing with the MQ-3 Alcohol Gas Sensor. Coupled with the SparkFun Gas Sensor Breakout Board, connecting the MQ-3 to your Arduino is a breeze. The MQ-3 is a heater-driven alcohol sensor that outputs an analog signal… Continue reading MQ-3 Alcohol Sensor, Breakout Board + Arduino

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. You can pick… Continue reading Sensing Humidity With The SHT15 + Arduino

The Big Easy Stepper Motor Driver + Arduino

[[Step Motor|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… Continue reading The Big Easy Stepper Motor Driver + Arduino