/diy/ - Do It Yourself

>>1646237
not entirely from scratch. the raspberry pi radio transmitter is a low example of the art. https://blog.erratasec.com/2013/02/custom-stack-it-goes-to-11.html is a high example of the art. in between, there are the real-time schedulers built-in to the kernel, loadable cpu throttling policies, interrupt pinning, task pinning, mmap'ing /proc/kmem, and the good old write your own driver if you really need to catch interrupts or microseconds
you're right on reliability. I still wouldn't have one running my house, never mind my rape cave/meth lab in the forest