A Cheap Serial Based TTL Device: Difference between revisions

From Center for Cognitive Neuroscience
Jump to navigation Jump to search
No edit summary
No edit summary
Line 1: Line 1:
Hardware/Parts:
'''Hardware/Parts:'''
:*[https://www.sparkfun.com/products/8269 Wall Adapter Power Supply - 5VDC 1A'']
:*[https://www.sparkfun.com/products/8269 Wall Adapter Power Supply - 5VDC 1A'']
:*[https://www.sparkfun.com/products/10088 Arduino Project Enclosure'']
:*[https://www.sparkfun.com/products/10088 Arduino Project Enclosure'']
Line 5: Line 5:
:*[https://www.sparkfun.com/products/110 9 Pin Female Serial Connector - Solder Cup'']
:*[https://www.sparkfun.com/products/110 9 Pin Female Serial Connector - Solder Cup'']


Software/Downloads:
'''Software/Downloads:'''
:*[http://arduino.cc/en/Main/Software Arduino Software'']
:*[http://arduino.cc/en/Main/Software Arduino Software'']
:*[http://www.mathworks.com/matlabcentral/fileexchange/32374-matlab-support-package-for-arduino-aka-arduinoio-package?download=true Matlab Toolbox for Serial interface with Arduino'']
:*[http://www.mathworks.com/matlabcentral/fileexchange/32374-matlab-support-package-for-arduino-aka-arduinoio-package?download=true Matlab Toolbox for Serial interface with Arduino'']




To Initialize the Arduino Box:
'''To Initialize the Arduino Box:'''


       if (exist('DIO', 'var') == 0)
       if (exist('DIO', 'var') == 0)
Line 22: Line 22:




To Send a pulse:
'''To Send a pulse:'''


       TTLpin = 2; % any pin from 2 through 19 can be used
       TTLpin = 2; % any pin from 2 through 19 can be used
Line 29: Line 29:




To close the session:
'''To close the session:'''


       delete DIO;
       delete DIO;

Revision as of 20:27, 27 February 2013

Hardware/Parts:

Software/Downloads:


To Initialize the Arduino Box:

      if (exist('DIO', 'var') == 0)
               % the exact address can be figured out using http://arduino.cc/en/Main/Software 
               DIO = arduino('/dev/tty.usbmodem621');
       end
       for i = 2:19 % filp all pins to a low state (0V)
           DIO.pinMode(i,'output');
           DIO.digitalWrite(i,0);
       end


To Send a pulse:

      TTLpin = 2; % any pin from 2 through 19 can be used
      DIO.digitalWrite(TTLpin,1); % set pin to 5V wrt to GND
      DIO.digitalWrite(TTLpin,0); % set pin to 0V wrt to GND


To close the session:

      delete DIO;