[sdiy] 8 bit MCUs, why bother? (branch off "LFSR digital noise source")

Tom Wiltshire tom at electricdruid.net
Thu Nov 14 21:10:33 CET 2019

> On 13 Nov 2019, at 11:23, Steve <sleepy_dog at gmx.de> wrote:
> (yes, I am also playing with analog synth chips and such, and even vacuum tubes, out of a special fondness - that doesn't mean I want to use obsolete stuff for every aspect of what I do ;))

They’re *not* obsolete. There are a lot of applications where something cheap and cheerful is what you need. Replacing a handful of logic chips that cost pence with a uP that costs a few pence less is one - that’s how we got here in the first place. For example, every sensor in your car probably has one doing CAN bus comms with whatever central ECU the car uses. While the ECU might need to be a 32-bit chip, a thing that receives a message and turns a brake light on doesn’t, or a thing that reads a tyre pressure sensor and broadcasts the reading.

Far from being obsolete, there are about a zillion applications, but they’re often so small as to be overlooked. I think you’re just thinking on the wrong scale. Think of all the tiny, simple stuff, not the things that *you’d* program.
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