Re: Arduino HP-25 Simulator

[TellyS]

(04-02-2022 10:06 AM)Maximilian Hohmann Wrote:  Hello!

Be aware that the Arduino Due has 3.3V pins as opposed to the 5V of the Uno. Make sure that your LCD touchscreen complies with that. Some Arduino shields can be set to either 3,3V or 5V by a jumper or solder bridge. The Due board has no protection against overvoltage, if the display shield has 5V on any of it's pins it will destroy the Arduino (I learnt that the hard way...).
If the screen is not compatible, an Arduino Mega board might be an alternative to the Due.
Regards
Max

Max,
thanks for the warning. The screen is voltage-wise compatible, but the libraries are not. I suspect there is no definition for Due, so it may be easy to fix that issue.

Edit: I switched library to MCUFRIEND and everything works, although I need to change the procedures that do the rendering. Should be interesting to see how accurate Due's Double is.

I have been using Mega. Should not have mentioned Uno. My code does not fit on an Uno.