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Maximilian Hohmann · (This post was last modified: 04-02-2022 10:07 AM by Maximilian Hohmann.)

Hello!

(04-02-2022 03:12 AM)Paul Dale Wrote: Changing the processor is unlikely to make a difference.

Yes, but an Arduino Due will at least provide plenty of memory to install an arbitrary precision math library which is hard (or even impossible) to fit into the memory of an Arduino Uno.

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. It has 5V pins and a lot more memory than the Uno, so fitting a math library like this one https://bellard.org/libbf/ should be no problem.

Regards
Max