Arduino: R-2R: Sine On You Crazy Diamond

RE: Arduino: R-2R: Sine On You Crazy Diamond

jc2048 — Sat, 14 Apr 2018 11:36:50 GMT

If anyone wants to use sineTable.c, here are the includes that went missing in the formatting:

#include <stdio.h>
#include <conio.h>
#include <string.h>
#include <dos.h>
#include <errno.h>
#include <math.h>

They might not all be needed (it's a piece of code that's been hacked about a lot over the years, so getting a bit messy now), but that doesn't really matter for PC code.

I didn't think to license it: it's free to use in any way you want but without warranty or guarantee as to fitness for purpose. You don't need to put my name on it or anything like that.

RE: Arduino: R-2R: Sine On You Crazy Diamond

dougw — Sat, 14 Apr 2018 04:16:35 GMT

Now I'm thinking - what kind of circuit would produce this concave square wave......

It might be one example where performing a Fourier transform would provide insight into the answer.

RE: Arduino: R-2R: Sine On You Crazy Diamond

genebren — Sat, 14 Apr 2018 03:38:40 GMT

You got to love math. That sure is an interesting waveform.

Gene

RE: Arduino: R-2R: Sine On You Crazy Diamond

shabaz — Sat, 14 Apr 2018 01:03:11 GMT

That's really nice!!

I know it's possibly not the use-case you're probably aiming for, but I guess you could make some really great alert tones now if you wanted to, with ADSR, by scaling the amplitude in software.