<![CDATA[M5 Calculator Project]]>I wrote a calculator for the M5Stack and the Calculator Keyboard FACE:
https://github.com/vkichline/FullCalculator-Arduino
I designed it to be extensible, but the structure of a calculator that behaves like you expect it to turns out to be pretty concept-heavy. I tried to include enough comments and documentation to make the project extendable.

Whole Device

The link above is an Arduino port of the working project: https://github.com/vkichline/BetterM5Calculator. It requires PlatformIO, but includes a battery of unit tests as well. If you want to make changes, start there. The tests let me know quickly when I broke something obscure.
I enjoyed working on it for a couple weeks, but am ready for a break. I hope someone finds it useful.

Status Display

]]>https://community.m5stack.com/topic/2248/m5-calculator-projectRSS for NodeWed, 29 Apr 2026 14:54:38 GMTFri, 28 Aug 2020 05:12:07 GMT60<![CDATA[Reply to M5 Calculator Project on Wed, 22 Sep 2021 19:34:46 GMT]]>Wow! I was looking for a pocket calculator for my twelve year old. I had an m5stack faces laying around, flashed with RunCPM, but unusable for me because of the tiny font it uses.

So, thank you for making this available.

]]>https://community.m5stack.com/post/14938https://community.m5stack.com/post/14938Wed, 22 Sep 2021 19:34:46 GMT<![CDATA[Reply to M5 Calculator Project on Fri, 28 Aug 2020 11:01:29 GMT]]>@vkichline
Very nice. I can see you spent a lot of time and thought on the implementation. Great job!

I would give it a try, but I don’t currently have the M5Faces kit to test with. Something on my list for the future though.

]]>https://community.m5stack.com/post/9865https://community.m5stack.com/post/9865Fri, 28 Aug 2020 11:01:29 GMT<![CDATA[Reply to M5 Calculator Project on Fri, 28 Aug 2020 07:49:20 GMT]]>look great!

]]>https://community.m5stack.com/post/9862https://community.m5stack.com/post/9862Fri, 28 Aug 2020 07:49:20 GMT