DAC Brick The DAC brick contains a MCP4728 12bit digital to analogue converter attached to an MSOP to DIL adapter board, which provides an I2C port to interface with the ARD brick and four analogue outputs (bottom) - one for each channel. Serial Port Commands: dac0=voltage - set dac channel 0 dac1=voltage - set dac channel 1 dac2=voltage - set dac channel 2 dac3=voltage - set dac channel 3 voltage in milivolts; range 0-4096 Python Functions: ard(port, channel, voltage) - set the dac channel (0-3) voltage in millivolts; range 0-4096

#Example Python code to test a DAC brick connected to an ARD brick

from I2Brick import *

port = I2Brick('COM4')             #Windows: Initialize the serial communication with I2Bricks
#port = I2Brick('/dev/ttyUSB0')    #Linux: Initialize the serial communication with I2Bricks

print(ard(port))                   #Test the communication between the ARD and the PC

dac(port,0,1000)                   #Set dac0 equal to 1V (1000mV)
dac(port,1,2000)                   #Set dac1 equal to 2V (2000mV)
dac(port,2,3000)                   #Set dac2 equal to 3V (3000mV)
dac(port,3,4000)                   #Set dac3 equal to 4V (4000mV)
                    
port.close()

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