Using Canvas for my EMG sensor signals

[Anthony2014]

Hello, I am trying to display the electromyography signals on using canvas. I happen to see some similar project. I have been trying to modify it to suit my requirements. I want the signals to be displayed of the Canvas on an X and Y axis. I also want the Y coordinates to display in intervals of (0,10, 20,30,40,50). Finally i want the signals to be able to start the origin of zero. (0). Plea

se can i get any help.?

[ChrisWard]

Hi Anthony - you do know your device has a built-in screenshot ability?

[ChrisWard]

Observations - surely your chart should use the same data that is stored in the Cloud?
There is a good Chart extension which might handle the data better (and be easier to code). You may recognise the Developer.......

[Free] ChartMakerPlus - an extension to make google charts

1. Introduction The original and popular Chartmaker extension has been in use by AI2 developers for years, and has provided a quick method to generate simple charts for pie, bar or line. This extension is a complete rewrite of the original, builds on what was there, and offers many new features: two new charts: column and table a boolean to turn zoom on and off exposes the ability to add other options simplifies data compilation - straightforward and user-friendly lists of lists returns sele…

[Anthony2014]

Thanks for the response. What i wanted to do is use a canvas to display the muscle signals on X and Y coordinates on the screen. As the muscles signals is being captured, it should be displayed line graph using the signals.

. Please can you help with the Canvas to display the signals reading on the screen ???

[Juan_Antonio]

Check examples 9 and 25

Bluetooth HC-06. Arduino. Send. Receive. Send text file. Multitouch. Image

25.- Simulation of an arithmia. p9BC_Bluetooth_ECGi.aia (12.4 KB) Arduino sends a random level (90...100), with a random delay (400...1600) [appinventor_ECG] void setup(){ Serial.begin(9600); } void loop(){ int nivel = random(90,100); int ritmo = random(400,1600); delay(ritmo); String mensaje = (String) nivel + "," + (String) ritmo; Serial.println(mensaje); } App Receives Text (98,977), gets the level (98) and draws it on a Canvas. [bluetooth_ecg5] [ari…

Maybe BT and AI2 are too slow to display the graph in real time.

[Anthony2014]

Thank you @Juan_Antonio I would try it out with my app design. I want to be able to display the muscle signals generated on the EMG app in this format. With the signals in continue format.

[Dani1234]

HI! Did you solve the problem?