[sdiy] Recording voltage changes/fluctuations for post-analysis

[rsdio at audiobanshee.com]

The saleae Logic 4 has 1 analog input and costs $109, connects to a computer via USB 2, and has recording software with trigger capabilities. If you need more than one analog input, the Logic 8 has 8 inputs and is $219. I've only used the digital inputs for triggering, so I can't say for certain whether you could automate the capture of the event that you're trying to catch. The software certainly records analog values, though, so you can scroll through the entire recording looking for the point in time that you're interested in catching.

Brian


On Feb 3, 2017, at 8:31 AM, Justin Owen <juzowen at gmail.com> wrote:
> If I wanted to set up the facility to record changes in voltage at a particular point in a circuit over a period of time - let's say up to 30 minutes - and then have it in a form that could be analysed - let's say in Excel (ideally) and/or some form of graphic (as a bonus)...
> 
> ...what sort of kit would I be looking at?
> 
> Voltage changes probably no more than +/- 1V and for home/small business use rather than MilSpec/CERN/NASA - basically I'm looking for a step above sitting staring at a multimeter :)
>