| Title: | AMIGA NOTES |
| Notice: | Join us in the *NEW* conference - HYDRA::AMIGA_V2 |
| Moderator: | HYDRA::MOORE |
| Created: | Sat Apr 26 1986 |
| Last Modified: | Wed Feb 05 1992 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 5378 |
| Total number of notes: | 38326 |
I want to make a time/voltage plot, and I believe there must be
a way to use my Amiga to do that.
What I need to record is a DC voltage that drops from +/- 10 volts
to +/- 5 volts over a periode of 5 to 10 minutes.
(Some of you might have recognized that I wish to record the
performance of R.C. NiCad packs under constant resistive load)
In other words in need an analog/in of some level into the Amiga,
and obviously I have to write some programs.
Could the potentiometer input on the joystick port (obviously with
some circuits between) be used, or has anyone some better idea?
Regards
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3975.1 | WJG::GUINEAU | Tue Jul 31 1990 13:34 | 5 | ||
get a cheap sound digitizer like perfect sound. It can probably do this fine with a slow enough sample rate. Not sure how you could interpret voltage levels... john | |||||
| 3975.2 | Analog-to-digital conversion. | HPSRAD::BUSCH | Dave Busch, MRO1-2/S10 | Tue Aug 07 1990 21:11 | 30 |
I'd like to be able to do the same thing. I've got the "Future Sound" digitizer and I'd like to be able to feed it a range of analog voltages. The problem is, the software that comes with it is geared to audio sampling rates, and the input to the device requires line-level inputs. The inputs could easily be scaled up or down as needed, but how can I adjust the sampling rate to some sub-audio level? Does anybody know what the I/O specs for the digitizer are? In other words, how could I digitize samples of some arbitrary waveform from Basic or 'C' for example. Some of the projects that this information would make possible are: Implement an "oscilloscope", as was suggested in a recent note. Record electro-cardiogram data and print it out on hard copy. (No, I'm not a doctor or a quack, just a curious tinkerer.) Monitor meteorological data, such as temperature, wind, humidity etc. over an extended period. Perform high school science projects which require monitoring changes in temperature, light level, velocity etc. over time (with the aid of the appropriate sensors). Build a transistor curve tracer. (This was one of the projects I did as a college lab project. However, mine was implemented in hardware. With the help of an Amiga, the job could be done mostly in software.) Dave | |||||
| 3975.3 | gameport.device... | WBC::BAKER | Mutants on the Bounty | Thu Aug 09 1990 18:36 | 5 |
I think you really might want to check out the gameport.device for some of the slower waveforms you're interested in... | |||||