Hi! I have this LCD Touchscreen,
and am trying to display the output of an ECG circuit that alternates between -0.2V and +0.2V, I have the code compiled but my waveform doesn't display.
I would greatly appreciate any help with this, I don't understand how to display the waveform. Thanks!
Its 5.4 now but if you see this, here are some things you might check.
First the display. Does your display work. Can you put something in it.
Then the waveform. Without any analog electronics you'll only see parts which are positive that is 0-0.2V. Two resistors and capacitor may be enough. Resistors feed 2.5V to the analog input. Capacitor goes between your ECG circuit and analog input.
You have to print single piksels into the LCD. Lower edge is -0.2V and upper edge is +0.2V and then you calculate where to put the dot. And shift old piksels to the left.