Archive

Posts Tagged ‘sketch’

Arduino: Security Alarm System.

March 25, 2015 Leave a comment

This project refers to a Security Alarm System implemented with Arduino and various electronics.

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Arduino: Light Indicator with multi-LED bar graph and light sensor.

October 25, 2012 Leave a comment

This project refers to an Arduino sketch that implements a light indicator with the help of an external sensor (photoresistor) for the recognition of light, and a bar graph of many LEDs used as a rating indicator. Furthermore, if the indicator reaches the last rating which indicates that there is “perfect” light (the maximum light that the sensor can identify) then it plays a melody with a piezo speaker located in the system.

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Arduino: Alarm clock with light sensor and ON / OFF buttons.

October 23, 2012 Leave a comment

This project refers to an Arduino sketch that implements a simple alarm clock using a light sensor, a piezo speaker, two buttons for functions such as ON, OFF and an LED as the function indicator. When the alarm is in OFF state, then it carries no real operation (just turns off the function indicator), and when in ON state, then it turns on the function indicator and examines whether there is sufficient ambient light (via the light sensor) to produces a musical tune with piezo speaker. This process is repeated continuously if there is sufficient light until the button OFF is pressed.

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Arduino: Embedded Arduino Web Controller.

October 22, 2012 Leave a comment

This project refers to an Arduino sketch that implements an Arduino Web Controller. Basically, the Arduino works as a network device that can be configured either locally or remotely by a special WEB interface. This technology is not new as it exists in other network devices. For example, routers or network printers are configured through a WEB interface.

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Arduino: Sending measurements from light sensor to Twitter via the Internet.

October 21, 2012 Leave a comment

Arduino & TwitterThis project refers to an Arduino sketch which has the capability to send measurements collected by a light sensor to an account at Twitter to be seen by many through the World Wide Web.

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Arduino: Device Control (open / close) using a light sensor and a relay.

October 18, 2012 Leave a comment

This project refers to an Arduino sketch which with the help of a relay (electromechanical switch) and a light sensor can drive an external device (e.g. a household lamp, a car alarm, a home air conditioner). More specifically, the Arduino collects samples from a light sensor at a specific rate and calculates the mean of samples for best accuracy. Then, if the average exceeds a threshold limit, it will activate the device via the relay. Also, the opposite happens where, if the average sensor value drops below the limit mentioned, the device is turned off.

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Arduino: LEDs animations controlled by a button.

October 18, 2012 Leave a comment

This project refers to an Arduino sketch which is used to produce animations with more than one LED. You can place several LEDs in a row or in any order you wish and enjoy the flow of traffic. Furthermore, if you wish to change the animation you can choose the next in line by pressing a special button. One such application might remind you of the Christmas lights.

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