Arduino Plot Lines

Question

Hello all.

I am new to the whole Arduino thing.

I am monitoring voltage accross a transistor.

I have it showing the voltage on an LCD (#include <LiquidCrystal_I2C.h>). LiquidCrystal_I2C lcd(0x27,16,2);

Example

I want to plot a line that shows the voltage so if it drops the line can reflect it.

Do you have an ideal how to do this.

Thanks for your time I know you all are busy.

fustini · Accepted Answer

Hi - it looks like from "LiquidCrystal_I2C lcd(0x27,16,2);" that you have 16x2 character LCD. Is that right? If so, it would be difficult to make much of line graph on it similar to what is shown in the photo.

A better option would be a graphical LCD. There are several models which have Arduino libraries like the following:

KS0108: http://www.arduino.cc/playground/Code/GLCDks0108

ST7565: http://www.ladyada.net/learn/lcd/st7565.html

"Nokia" LCD: http://www.sparkfun.com/products/10773

Cheers,

Drew