For your NXT or EV3
Sensors
Accelerometer, Compass & Gyro
Motor Multiplexers & Controllers
Wireless Control
Sensor Adapters & Multiplexers
RC Servos, Mountings & Pneumatics

Sensor Kits
Flexi-Cables & Cable Extenders
Classroom packs of Flexi-Cables
Plugs and Connectors
Power Options
Other Robotics accessories

EV3 Console Adapter
EV3 Sensor Adapter for NXT or Arduino
EV3 Compatibility Info

Android App for NXT/EV3

Arduino Products
Shields and Controllers

Raspberry Pi Products
For your Raspberry Pi

Connect with us
Google+
Shopping Cart
Your cart is empty.

Ordering Information
Our Distributors
World Wide Shipping
How to Order and Pay
Paying by Credit Card
Your satisfaction is important to us
About mindsensors.com
Site Map

Yondering ...
Forums
FAQ
Videos
Coming Soon ...
End of Life Products
Robotics related Links

Downloads
NXT Product Docs and Software
User Guides
EV3 Blocks
API's and Sample Programs
NXT-G Blocks
All Downloads

EV3 Programming Environment
Which Programming Environment do you prefer for EV3?
EV3 Home Edition
EV3 Edu Edition
LeJOS
MonoBrick
RobotC
ev3dev
Other



[View Result]

Votes: 1225
Translate this site
Translate this site: (Courtesy of Google™)
Search Web Pages



Need Quote for your School?
Write e-mail to:
info
Need Technical Support?
Write e-mail to:
support
Note your order number in the support request.
You can find order number on your Packing-slip or Order confirmation e-mail.


Proud Supporter of:
Robofest


Trinity College Fire Fighting Robot Contest.

Contact:
E-mail:
info
Address:
mindsensors.com

8623 Mayland Drive
Henrico, VA 23294-4703 USA.
Phone: (804) 767-8116
Fax: (804) 747-5303
Official PayPal Seal
Passive Sensor Multiplexer v2
Features
PMUX2

The RCX has only 3 sensor input connectors. Most of the sophisticated robot designs need more than three sensors. Passive sensor multiplexer lets you connect three Boolean sensors (touch sensor) at the same time to single RCX sensor input port. With a simple logical decision you can find out which of the touch sensors are pressed.

This multiplexer may not work with Mindstorms NXT.
Technical Specifications
Passive sensor multiplexer has three channels Ch1, Ch2 and Ch3. The table below shows the raw value for different combinations of these sensors.
Note: Due to differences in manufacturing and electronics tolerence levels, the values may be different from the mentioned below. Best way to get the correct value for your PMUX is to attach a touch sensor to your PMUX, and when it's pressed, read the value on your RCX.


Sensor Channel 1
Sensor Channel 2
Sensor Channel 3
Raw Value
0
0
0
1023
0
0
1
753
0
1
0
623
0
1
1
512
1
0
0
355
1
0
1
317
1
1
0
293
1
1
1
266

  • Dimensions: size of 2 by 8 stud plate.
  • Power with no active sensors: 0mW
  • Power with all sensors active: 4mW
  • Connector: Standard mindstorms electric connector.
Music Maker using two PMUX's
RCX Piano

This Music maker was made using 6 touch sensors attached to two PMUX's.

The frequencies are calibrated to match C3 through A#3 notes.
The Sensor values are compared with appropriate ranges to ensure that key presses are noted immediately and accurately.
NQC program used for this music maker
task main()
{
  // set first pmux as touch sensor in raw mode.
  SetSensor(SENSOR_1,SENSOR_TOUCH);
  SetSensorMode(SENSOR_1, SENSOR_MODE_RAW);
  // set second pmux as touch sensor in raw mode.
  SetSensor(SENSOR_2,SENSOR_TOUCH);
  SetSensorMode(SENSOR_2, SENSOR_MODE_RAW);
  while (true)
  {
        // first pmux
        if ( SENSOR_1 > 700 && SENSOR_1 < 800 ) {
           PlayTone(138,3);
        }
        if ( SENSOR_1 > 600 && SENSOR_1 < 690 ) {
           PlayTone(155,3);
        }
        if ( SENSOR_1 > 300 && SENSOR_1 < 530 ) {
           PlayTone(174,3);
        }
        // second pmux
        if ( SENSOR_2 > 300 && SENSOR_2 < 530 ) {
           PlayTone(185,3);
        }
        if ( SENSOR_2 > 600 && SENSOR_2 < 690 ) {
           PlayTone(208,3);
        }
        if ( SENSOR_2 > 700 && SENSOR_2 < 800 ) {
           PlayTone(233,3);
        }
  }
}

PMUX mounted with three Touch sensors
PMUX on Piano

Notice the three touch sensors mounted on the PMUX in front of the music maker.