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

摘要

禁止

侵略

Resistive Sensors,hing that senses also be passive? The term is a carryover from the old RCX days when there were only two types of sensors: those that required a power supply and those that didn’t. You probably figured out that passive sensors were the type that didn’t. The contact sensors you learned about in Chapter 4 were also passive sensors.

极小量

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.

事与愿违

4.3V Powered Sensors,rs powered this way. It’s defined as the 4.3V power supply, but the voltage actually varies about 7% with load. The plot in Figure 3-2 shows the voltage ranging from 4.6V, when is the power supply is lightly loaded, to 4.0V when it’s fully loaded.

抗体

NXT Motor Interfaces, other equipment. The motor simply needs to be mechanically arranged to push the buttons, turn the knobs, or flip the switches on the external device to control it. The NXT motor makes it easy because it has a lot of torque and has built-in position feedback.

glacial

发誓放弃

Explorative empirische Untersuchung,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.

指数

sperse

Jessica S. C. Leung,Maurice M. W. ChengIn this chapter we’ll investigate some examples of the cool things you can do with NXT when it’s combined with other software and hardware.