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Extreme NXT pp 131-147 | Cite as

Two-Wire Powered Sensors

Abstract

The original LEGO MINDSTORMS brick, the RCX, used a two-wire powered sensor interface. The NXT has a backward compatibility mode with the old RCX sensors, and that mode offers some advantages for homebrew sensors that need higher voltages than the 4.3V supply described in Chapter 8. It’s a natural choice for sensors that need to take full advantage of the 5V analogto-digital conversion. Conveniently, the two wires are the same two wires you already used for passive sensors: the white and black wires in the NXT cable, or pins 1 and 2 on the port connector.

Keywords

Pressure Sensor Voltage Sensor Shunt Resistor Passive Sensor Glass Bulb 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Michael Gasperi, Philippe Hurbain, Isabelle Hurbain 2007

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