Adding a Raspberry Pi inside a NumWorks calculator @numworks @raspberry_pi

Adding a Raspberry Pi inside a NumWorks calculator (video). Zardam writes –

I was having a Raspberry Pi Zero sitting on my desk for a long time, searching for something to do with it. I also wanted to to learn STM32, mainly DMA and interrupts. As the calculator is powered by an STM32F412, why not put them together ?

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