newport-laser-diode-driver 1.0.4

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Newport Model 300-500B Series Laser Diode Driver Python USB Package (for Linux)

Pre-requisites

• Permission to connect to the Newport Laser Diode Driver USB device
• Python version >= 3
• pyusb library

Set-up

Allow the Newport Laser Diode Driver USB device to be managed by Python ref

Run the Run the following shell command:

usb-devices  # this allows us to see the idVendor and idProduct of all USB devices 

Ensure that the idVendor and idProduct match the example below unless change the idVendor and idProduct to the appropriate values.

Run the following shell command:

cd /lib/udev/rules.d/ ;
sudo touch 50-Newport_Laser_Diode_Driver.rules ;
sudo vim 50-Newport_Laser_Diode_Driver.rules ;

Copy & paste the following line into the file: ACTION=="add", SUBSYSTEMS=="usb", ATTRS{idVendor}=="104d", ATTRS{idProduct}=="1001", MODE="660", GROUP="plugdev"

Then, type :wq and press ENTER to save the changes

Run the following shell command:

sudo adduser USERNAME plugdev ;  # don't forget to change the USERNAME
sudo udevadm control --reload ;
sudo udevadm trigger ;

Prepare Python and dependencies

In your desired Python environment, run the following shell command:

pip install pyusb  # should be already installed by default

Usage

In your desired Python environment, run the following shell command:

pip install newport-laser-diode-driver

Here is an example snippet of how a Laser Driver object could be instantiated:

from newport_laser_diode_driver import NewportLaserDiodeDriver

model_535B = NewportLaserDiodeDriver(idVendor=0x104d, idProduct=0x1001)

identifier = model_535B.get_identification()  # obtain the identification
print(identifier)

model_535B.set_current_set_point(10.0)  # set current set point to be 10.0 mA
current = model_535B.get_current_set_point()  # get the current set point
print(current)  # 10.0
model_535B.enable_laser_output()  # enable laser output

Troubleshooting

To check if the device is recognized by the PC, run usb-devices to list all USB devices connected to your PC. If the Newport device is not found, try connecting the USB cable from the device to your PC first and then restart the device.