Titlebook: Extreme NXT; Extending the LEGO M Michael Gasperi,Philippe Philo Hurbain,Isabelle Hu Book 20071st edition Apress 2007 Hardware.LEGO.LEGO Mi

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In the Box,Before you jump into building your own sensors and actuators, it’s important to understand the ones that came in the box, and a few that didn’t. It’s also important to understand the programming languages available to the NXT and their strengths and weakness.

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In the Beginning,rst MINDSTORMS kit: The Robotics Invention System (RIS) with the Robotic Control Explorer (RCX) programmable brick (see Figure 1-1). It represented the evolution of five decades of modular construction techniques from LEGO, with years of computer-based education methods from the Massachusetts Instit

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Contact Sensors,tact sensors use the same NXT-G Touch Sensor block shown in Figure 4-1 as the LEGO ones. You probably already have everything you need to homebrew one. Even if you don’t, the parts are readily available from electronic stores such as Radio Shack, and even from hardware stores.

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Potentiometer Sensors,. It changes with the rotation of a mechanical shaft. You’re probably already familiar with the device, because it’s commonly used as the volume control on audio equipment. Rotating the shaft changes the resistance between the center and outer two terminals. It’s a kind of self-contained voltage div

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Voltage Sensors, 5V supply inside the NXT, or some part of it divided through an external resistor. It probably doesn’t come as a big surprise that you can connect an external voltage to the input and have the NXT convert that instead.

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