usb scope or datalogger

I would like to monitor the current going to a proportional valve on an injection molding machine. has anyone use a usb scope or datalogger for this purpose? (there is a 1 ohm resistor on the board to monitor the voltage across it)
1v = 1 amp.

Try this, it may be useful.
http://www.picotech.com/data.html

Hello,
we have been using 2 PicoScops in a project 5 years ago.

Those days was still a problem that hf disorders killed somtimes the windows driver (welding ignition).

Otherwise really good devices, we have been measuring signals in the range of 50 ns up to some hours by dynamically configuring with the delivered API.

I liked theme, but I have to confess that I don't know other ones

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These are pretty powerful and cheap, software is pretty nice. I use the analog out for a setpoint and monitor the feedback and tune the loop.
You can export to a .csv and import into excel and do your own graphing if desired

http://www.mccdaq.com/usb-data-acquisition/USB-1208-Series.aspx

Is 50ks/s = 200us per sample?

VJTX said:

Is 50ks/s = 200us per sample?

Click to expand...

ops, I think its 20us.