Directly control three LEDs based on USB or firewire port in laptop

[paris_sun]

As USB or Firewire interface is popular gradually, I attempt to control three LEDs through the USB or Firewire port in a laptop. The power can be provided through the interface or extra device. It's a very simple experiment, but I don't know how I can do this. Are there any solvements from NI? If not, what kind of development tools do I need for this object? Thanks in advance!

[Spencer S.]

Paris,

National Instruments offers USB digital I/O devices that should work for this application. I have included links to these product pages below:

DAQPad-6508

DAQPad-6507

Since you only need to control three LEDs, you may want to also consider one of National Instruments FireWire multifunction DAQ devices. Besides eight digital I/O channels, they also include analog input, analog output, and counter functionality. I have also included links to these product pages below:

NI DAQPad-6070E for FireWire

NI DAQPad-6052E for FireWire

Good luck with your application.

Spencer S.