Arduino and LEGO Projects by Jon Lazar PDF

By Jon Lazar

ISBN-10: 1430249307

ISBN-13: 9781430249306

We know how striking LEGO is, and progressively more everyone is researching what percentage remarkable belongings you can do with Arduino. In Arduino and LEGO initiatives, Jon Lazar indicates you ways to mix of the good issues on the earth to make enjoyable contraptions like a Magic Lantern RF reader, a sensor-enabled LEGO tune field, or even an Arduino-controlled LEGO teach set.

* study that SNOT is de facto cool (it ability Studs no longer on Top)
* See designated reasons and photographs of ways every thing matches together
* learn the way Arduino matches into each one undertaking, together with code and explanations

Whether you need to provoke your folks, annoy the cat, or simply chill and delight in the awesomeness of your creations, Arduino and LEGO initiatives indicates you simply what you would like and the way to place all of it jointly.

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Extra info for Arduino and LEGO Projects

Example text

35 Chapter 2 ■ Using Sensors with the Android Listing 2-3. write(center); } void loop() { // establish variables for duration of the ping, // and the distance result in inches: long duration, inches; // resets counter if we run out of sensors if (counter == 3) counter = 0; // The PING))) is triggered by a HIGH pulse of 2 or more microseconds. // Give a short LOW pulse beforehand to ensure a clean HIGH pulse: pinMode(pingPin[counter], OUTPUT); digitalWrite(pingPin[counter], LOW); delayMicroseconds(2); digitalWrite(pingPin[counter], HIGH); delayMicroseconds(5); digitalWrite(pingPin[counter], LOW); 36 Chapter 2 ■ Using Sensors with the Android // The same pin is used to read the signal from the PING))): a HIGH // pulse whose duration is the time (in microseconds) from the sending // of the ping to the reception of its echo off of an object.

An ultrasound sensor sends out a high frequency sound that will bounce off objects and return to the sensor. The time it takes for the sound to go out and bounce back is then calculated to tell the distance of the object. With a simple calculation, it can be converted into a more human relatable value of centimeters or inches. , an Arduino-compatible ultrasound sensor. As seen in Figure 2-1, the PING))) Ultrasonic Distance Sensor has three pins: 5V, GND, and SIG. The 5V and GND pin on the sensor connect to pins on the Arduino, which will allow the circuit to complete and for power to run through the ultrasonic sensor.

A second layer is added to frame the ultrasonic sensors 46 Chapter 2 ■ Using Sensors with the Android Once the walls are built up around the sensors, you lock them in using a layer of bricks on top, as seen in Figure 2-24. If there is too much pressure on the sensors when attempting to lock the bricks down on top of the sensors, remove the 1 x 2 brick that is on the inside beneath the sensor to create a groove for the pins to sit in to make space for them. Hanging behind the sensors in the picture is a 1 x 4 brick that helps hold the two 2 x 4 bricks together and keeps the sensors from falling back into the Android.

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Arduino and LEGO Projects by Jon Lazar

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