Difference between revisions of "EGR 103/DAQ 1"

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This page contains pictures and graphs related to Data Acquisition Laboratory 1 (DAQ 1) of [[EGR 103]]. It has been updated for Fall, 2013.
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== '''Note:''' For Fall 2019 and after, you will want the [[Python:DAQ_1]] page. ==
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<!--
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== Introduction ==
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This page contains pictures and graphs related to Data Acquisition Laboratory 1 (DAQ 1) of [[EGR 103]]. It has been updated for Spring, 2018.  This page underwent a major revision in Fall of 2017 based on the DAQmx drivers and MATLAB's elimination of legacy toolbox codes.
  
 
== Supporting Pundit Pages ==
 
== Supporting Pundit Pages ==
 
*[[MATLAB:CB-68LP Pinout]]
 
*[[MATLAB:CB-68LP Pinout]]
 
*[[Resistor Color Codes]]
 
*[[Resistor Color Codes]]
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*[[Transferring_Files]]
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== Typographical Errors / Clarifications ==
 
== Typographical Errors / Clarifications ==
* None yet...
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* If the computer says your device is not found, try 'Dev2' instead of 'Dev1' in the
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addDigitalChannel(s,'Dev1','Port0/Line0:2','OutputOnly')
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: line.
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* Before running the program, the person at the DAQ machine will need to install the pydaqmx module:
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** Go to the Start button, find the Anaconda3 folder, and click the Anaconda prompt
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** In the Anaconda terminal that just opened, type
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pip install pydaqmx
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** One it is done installing (or confirms that it is installed), close the Anaconda terminal
  
 
== Equipment Used ==
 
== Equipment Used ==
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[[Image:DAQ1LEDs.jpg|thumb|Several Light Emitting Diodes]]
 
[[Image:DAQ1LEDs.jpg|thumb|Several Light Emitting Diodes]]
 
[[Image:DAQ1LEDsClose.jpg|thumb|Closeup of two round LEDs]]
 
[[Image:DAQ1LEDsClose.jpg|thumb|Closeup of two round LEDs]]
[[File:LED, 5mm, green (en).svg|thumb|Drawing of LED from Wikipedia [http://en.wikipedia.org/wiki/Light-emitting_diode Light-emitting_diode] page]]
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[[File:LED,_5mm,_green_(en).svg|thumb|Drawing of LED from Wikipedia [http://en.wikipedia.org/wiki/Light-emitting_diode Light-emitting_diode] page]]
 
A diode is an electrical element that generally only allows current to flow in one direction - and only after there is a sufficient voltage difference across the appropriate terminals.
 
A diode is an electrical element that generally only allows current to flow in one direction - and only after there is a sufficient voltage difference across the appropriate terminals.
 
LEDs - Light Emitting Diodes - are a special form of diode that emit light when current flows through them.
 
LEDs - Light Emitting Diodes - are a special form of diode that emit light when current flows through them.
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== Code ==
 
== Code ==
The following code listing is for <code>BasicDOutput.m</code>
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The following code listing is for <code>ThreeBits.m</code>
 
<source lang="matlab">
 
<source lang="matlab">
% Prepare workspace
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% Clear out workspace
clear; format short e
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clear
 
 
% Clear out DAQ object
 
delete(daqfind)
 
  
% Create Digital I/O Object
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% Create a session
DIO = digitalio('nidaq', 'Dev1')
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s = daq.createSession('ni')
  
% Add output lines to Digital I/O Object
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% Add output lines to session
DOutputs = addline(DIO, 0:2, 'out')
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addDigitalChannel(s,'Dev1','Port0/Line0:2','OutputOnly')
  
 
% Writing values to output lines using binary
 
% Writing values to output lines using binary
putvalue(DOutputs, [1 1 1]);
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outputSingleScan(s, [1 1 1]);
 
fprintf('Press return to continue\n');
 
fprintf('Press return to continue\n');
 
pause
 
pause
putvalue(DOutputs, [0 0 0]);
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outputSingleScan(s, [0 0 0]);
  
 
% Writing values to output lines using base 10
 
% Writing values to output lines using base 10
 
MyVal = 0
 
MyVal = 0
 
while 0<=MyVal & MyVal<=7
 
while 0<=MyVal & MyVal<=7
     putvalue(DOutputs, MyVal)
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     MyBinVal = decimalToBinaryVector(MyVal, 3, 'LSBFirst');
     fprintf('Displaying %0.0f as %c %c %c\n', ...
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    outputSingleScan(s, MyBinVal);
         MyVal, dec2bin(MyVal, 3))
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     fprintf('Displaying %d as %d %d %d\n', ...  
     MyVal = floor(input('Enter a number between 0 and 7: '));
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         MyVal, MyBinVal(end:-1:1))                  
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     MyVal = floor(input('Enter a number between 0 and 7: '));  
 
end
 
end
  
 
% Turn all outputs off
 
% Turn all outputs off
putvalue(DOutputs, [0 0 0])
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outputSingleScan(s, [0 0 0]);
 
</source>
 
</source>
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== Other Resources ==
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* Landing Lights Animation:
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[[File:LLGifSmall.gif]]
  
 
== Questions ==
 
== Questions ==
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[[Category:EGR 103]]
 
[[Category:EGR 103]]
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Latest revision as of 17:13, 7 October 2019

Note: For Fall 2019 and after, you will want the Python:DAQ_1 page.