I have a fairly simple project I'm working on, and I'm hoping somebody can confirm or deny that arduino would be a viable (even good, perhaps) solution for me.
Essentially, I'm trying to interface with an old analog chart recorder. The chart recorder takes a +DC voltage, and moves a pen along along a roll of paper as that voltage increases and decreases. A knob on the front of the chart recorder lets you select a voltage sensitivity, from 1 mV up to 10V.
What I'd like is something which is connected to a computer, and which takes a changing integer value (0-99 or 0-255 or something) and outputs a voltage proportional to the input value. Simplest example would be outputting 1 mV for 1, 10 mV for 10 etc.
This should be relatively easy to accomplish, correct? I've never used arduino before, but it seems well suited to this project.
one minor point of confusion before I finish: with a board like the Uno, can the USB input be used to receive and transmit data while the board is active, or is it only for loading firmware? Do I need a usb shield or something to transmit data from the computer in real-time?
thanks in advance for your help.