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NXT – 8 Input RCX Touch Sensor Mux
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About this creation

I have built a Lego Mindstorms NXT, 8 Input RCX Touch Sensor Multiplexer for use with the old style RCX Touch Sensors.

NXT - 8 Input RCX Touch Sensor Multiplexer Unit without the Sensors attached

I really don't know what the Lego Designers where thinking when they designed the NXT Touch Sensor!

I have one of  Mindsensors' new TouchMux's, but it doesn't work very well with the legacy RCX style Touch Sensors.  Mindsensors do make a very good a RCX Sensor multiplexer for NXT, the RXMux which allows you to connects up to 4 RCX style analogue sensors to your NXT. The RXMux Supports the following Sensors:


  • RCX Touch Sensor

  • RCX Light Sensor

  • RCX Rotation sensor

  • RCX Temperature sensor

As I often use more than 4 Touch Sensors in many of my Robots, I needed to construct my own RCX-TouchMux as there is no commercial equivalent to my Knowledge available.


Philips PCF8574 - I2C Remote I/O Expander Chip Internals

As can be seed from the Schematic Circuit Diagram shown below, the bill of materials is minimal. All you need is the following:



For more details, please fly too my website:

www.rjmcnamara.com







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By Sparra McNamara
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Added July 1, 2010
 


LEGO models my own creation MOCpages toys shop NXT – 8 Input RCX Touch Sensor MuxRobotics


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