ADC to sine
Yup: drive the X value from the timer (or the 'current time' the sample was taken). It obviously depends on how fast you are recieving data, but if it's a serial port, it'll be fairly low. Or, it may...
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ADC to sine
Hi, This is what I need SJWhiteley . I know that it isn't "FFT" but it's good for my project. I just need put in code for plot data from ADC from 0-255, 127 is midle of range 2.5V reference. p.x, p.y...
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Okay, I was thinking about this last night, and think the easiest solution may be to plot the lines using the DrawCurve method of a graphics object. It seems to exhibit good presentation behavior with...
View ArticleADC to sine
Hi, Yes you are right, I don't have enough sample points for 'smoother' (signal is jagged after plot) look. Well we are back on FFT, bah.. In FFT from let's say 5 points you can reconstruct whole sine...
View ArticleADC to sine
I don't know how you are going to be able to predict how a bezier curve hould look for any given signal (there are infinate possibilities), but look at the DrawBeziers function. Do you mean the signal...
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ADC to sine
Hi, Are you wanting the signal to be smoothed out (bezier curve fit)? Yes that's it correct. I do not ask for super solutions only some improvements which can be done with VB2005,(if they can be done),...
View ArticleADC to sine
Okay, so now I'm confused as to what you mean by 'stairs': there's no stairs in the result based off the code I posted... Are you wanting the signal to be smoothed out (bezier curve fit)? This is...
View ArticleADC to sine
Hi, Well this is nice pice of code wich draw sine wave SJWhiteley, but I need draw sine wave from 8bit ADC data wihtoutor minimum stairs in signal. Thing is ADC start it make conversion, it gives me...
View ArticleADC to sine
I think you may be overcomplicating things - here's a simple form which plots a sine wave on it (no scaling, or anything, but I think you can get the idea): (Add a timer and a panel to the form)...
View ArticleADC to sine
Hi, Thanks for code above. Is it possible implement it in this case?Bargraph is no problem, i need to see sine form, not it's value. Look at this code below it only need picturebox (picgraph1) it is...
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ADC to sine
Hi,Coming to think about it yes you are right.You might want to draw the zero line down the middle of the graph though.How many points can you see yourself wanting to plot?The reason i ask is with 160...
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ADC to sine
Hi Spiderman, Well, I will use 8 bit data from ADC and yes +127.... 0...... -128 will be range (it can be and +125, -125). I use 2,5V to set reference for ADC's zero on it's input, and input AC signal...
View ArticleADC to sine
Hi,Good job i know my maths and what an ADC is. :-)Anyway you could write the values into an array.Dim myValues (20) As IntegermyValues(0) = 50myValues(1) = 75 etc. Is +100 and -100 your range?Usually...
View ArticleADC to sine
HI,That was fast ...... :) Thanks.But now I need from this : 20-30-50-70-90-80-60-40-20-10-50-60-70 (8 bit serial data from ADC) etc. plot sine wave or something....How implement this data in your code...
View ArticleADC to sine
Hi,What is 'a' in your code?Most versions of Basic work in Radians,360 degrees = 2 * Math.Pi 'in radians.Now try your code below with the alterations i've added. Private Sub Bt_Click(ByVal sender As...
View ArticleADC to sine
Hi,I have this piece of code wich plot sine and cos sinusoide in picture box, and it work ok, but I need different math functions wich will from capture ADC data ( 8 or 10 bit data) plot signal on...
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