Single Curve Tracer 08M.

[IAO]

Hello to all.

I am new in the forum. This is my first message.
I am spanish speaker. I do not write well English.

In order to understand this, please to read here:
CurveTrace.html
I use a 120VA to 6VA transformer.

Look here a capture of simulation in Proteus7.6 (Isis).
Capture Proteus Simulation
I use 6V 5Hz in the simulation generator. If i use 50Hz, all Excel graph are bad and ugly.

Look here a capture Excel Graph scatter (dispersion) mode.
Capture Excel Graph

Please, look the code and schematic.
If you see an error give me a suggestion.
I think the code is poor and go to bad way.

Code and Proteus-dsn in .rar format

I hope you can understand me.

Thanks in advance...

 

[BeanieBots]

I've not looked fully into this (not downloaded or extracted the .rar file) but at a quick glance of your excel output, it looks as if all your measurements are 90 degrees out of phase.
This might be as simple as having the horizontal & vertical inputs the wrong way around or it might might be swapped polarity on one of the drives.

Also, bear in mind that any software generated (or read) voltages will have an inherant time delay which will skew any attempts at time domain measurements. This will become more prominent at higher frequencies which I think is what you are observing but I'm not 100% sure what your question is.

 

[IAO]

Hello....

Mr. BeanieBots, thanks for your answer.
Please don't worry.

I understand that the simulator program can be giving me false readings.
I will buy a picaxe 08M, and make live test.
I do not have questions by the moments.
-

All the components of the CurveTracer, work well.(reality components and simulator prog. Small differences in millivolts)

I understand that my problems are the reading of the ADC.
The Excel Graph is 5Hz samples. But at 50Hz, the sine wave samples seem a triangle wave.

I modified the project and improved the exit a little.
Capture2 Improved Circuit

I will hope that arrives my PicAxe 08M, I will test all components in live. Then I post the changes.

I hope you can understand me. Thanks again.