Share My Creation Oscilloscope

vb1992 · Jan 5, 2012

Cool Stuff Klaus !

thedesolatesoul · Jan 5, 2012

wow...that looks so cool!

vb1992 · Jan 5, 2012

been having fun with the example code

Tom Christman · Jan 6, 2012

:sign0142:Beautiful work (as usual) Klaus!

Scantech · Jan 6, 2012

Klaus!!! You just made my day! This is awesome and many thanks.

ta1dr · Jan 6, 2012

:sign0098: thanks Klaus

pinoy_ako · Jan 6, 2012

nice share Mr. Klaus. thanks. now i'm thinking of hooking my ioio to this. i just can't think i can.

Scantech · Jan 7, 2012

Is the "U/Div" something like a Zoom function? Smaller "U/DIv" values appears to make the drawing bigger.

Setting the "U Offset" below 0 and decreasing the value of the "u/div" will cause graphing lines to go upward direction with higher GetValues. But setting the offset above 0 will cause the graphing lines to go downward direction from the main offset starting point when decreasing the value of u/div. Is this the intention of the program or a bug?

Setting 0 offset is at the center of the grid which is normal, but setting Negative U/Offset will start above the 0 grid area and positive U/Offset value will start below the 0 offset area. Bug?

I am really starting to like this app. Rolling function will be great. I wish I can help but I need more time studying the codes.

I was testing it with this code.

B4X:

Sub GetValues
   Dim i As Int
   
   For i = 0 To CurvesNb
      'CurveVal(i, ii) = a(i) * Sin(w(i) * t)
      CurveVal(i,ii) =  Rnd(0,2)
   Next
End Sub

klaus · Jan 7, 2012

Is the "U/Div" something like a Zoom function? Smaller "U/DIv" values appears to make the drawing bigger.

This is a normal function of an oscilloscope.
If you have an amplitude of 1 unit (volt or anything else) and a scale of 1 unit/division (1 U/Div) the amplitute on the screen is 1 division.
If you still have an amplitude of 1 unit and a scale of 0.5 unit/division (0.5 U/Div) the amplitute on the screen is 2 divisions ( 1 / 0.5 = 2).
If you still have an amplitude of 1 unit and a scale of 2 units/division (2 U/Div) the amplitute on the screen is 0.5 division ( 1 / 2 = 0.5).

Setting 0 offset is at the center of the grid which is normal, but setting Negative U/Offset will start above the 0 grid area and positive U/Offset value will start below the 0 offset area. Bug?

This is a bug.

The offset setting is in curve units, and not divisions.

Updated version 1.1 in the first post.

Best regards.

Scantech · Jan 9, 2012

Klaus, See attachment. Roll function works but I get the feeling it's not done right. Maybe you can polish it up. r1 and r2 got me confused.

There is a bug on #3 offset. the Event name is not correct.

klaus · Jan 10, 2012

Version 1.2 available in the first post with the ROLL mode working, but somewhat slow.
@Scantech
I tried your version, but it's not the right method.
Anyway the solution with copying bitmaps was not the right way to do it because the number of pixels for one step is not an integer.

Best regards.

Scantech · Jan 10, 2012

Well Done Klaus. I like it and works really good on my slow device. Lot better then copying bitmap.

Scantech · Jan 10, 2012

This attachment fixes a bug when switching Modes.

For/Next statement in the Roll can lead to a problem. I never figured out a way how to get out of this loop when exiting app on Android. It will keep looping and App will not reload. Other than that, everything else is smooth.

klaus · Jan 11, 2012

The amended update version 1.3 is in the first post.

Best regards.

vb1992 · Jan 12, 2012

here is something in the market that looks similar, not sure how it scrolls
could help see how another app looks/works

I am gonna download it now, and take a look

https://market.android.com/details?id=com.skatephone.sstatus

alan1968 · Oct 16, 2012

Hello Klaus,

I give you permission to use your code because I also tilt module in my app but less successful than yours

Alan

klaus · Oct 16, 2012

Yes, you can use the code without any restriction and modify at your conveniance.
Tu peux utiliser le code sans aucune restriction et le modifier selon tes besoins.

Best regards.

alan1968 · Oct 16, 2012

merci ,c'est super sympa ! :icon_clap:

rajeev.piyare · May 8, 2013

Dear Klaus
Could you please advice as how can we use this for getting data from Arduino via a Bluetooth. I would like to plot real-time graphs for sensor inputs connected to Arduino analog input pins.

please help.

thanks in advanced.

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