pwm

Temperature Controlled Fan

Arduino Temperature Control – Adjust Fan Speed based on Temperature

In this Arduino based project, we are going to control DC fan speed according to the room temperature and show these parameter changes on a 16×2 LCD display. It is accomplished by the data communications between Arduino, LCD, DHT11 sensor Module and DC fan that is controlled by using PWM. PWM is a technique by …

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Playfield Hardware Flippers

Playfield :: Hardware :: Flippers Using Arduino

If you are contemplating building your own machine, then you probably already know a good bit about how pinball machines work. It’s basically series of electro-mechanical events where a steel ball activates a switch, which in turn fires a solenoid that drives a mechanism, sending the ball off in some other direction where it most likely hits another switch, and so …

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Arduino Visual Navigator (1)

Visual Navigator Making it MOBILE using Arduino

Obstacle avoiding vehicle, continue in “3D Laser Range Finder” series ( project 1, project 2). The basic idea is the same, measuring distance using red laser pointers, CCD analog camera and Arduino UNO.  Modification was made in geometry.  Two lasers were set for “far field” obstacle detection, few meters in front of vehicle on left or right …

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High Power Control Arduino TIP120 Transistor Schematic

High-Power Control: Arduino + TIP120 Transistor

Up until now, we have talked about working with a lot of low-power devices. Sensors, LEDs, ICs, and the like are all capable of being powered directly from your Arduino, but as many awesome 5 and 3.3v components as there are, eventually you will find yourself holding a 12v solenoid, motor, or light and wondering “How the heck am I supposed to …

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Clusterbot

Clusterbot A Small Arduino Powered Robot

What is Clusterbot?  He is a small, affordable, autonomous Arduino-powered robot.  He can move, see, avoid obstacles, and makes a melodic chirping sound sometimes. Clusterbot was my first Arduino project, and I think he makes a great project for a beginner.  While building Clusterbot you will learn how to use motor controllers, ultrasonic rangefinders and …

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