On 29. des. 2018, at 9:05 e.h., Pat Farrell <pat22...@gmail.com> wrote: > I need a project to motivate myself into writing some non-trivial go. So I > want to learn about implementing control theory, sensors, etc. ... > So now I have 3 main questions: > 1) is go a bad choice for implementing this? > 3) what OS? (Choices restricted to some flavor of Unix/Linux, or an RTos, no > OS-X, IOS, or Windows need apply)
Go's GC pauses and Linux's preemptions make them bad choices for this if occasional random failures are unacceptable, but in practice, for tinkering purposes, I think they're both fine --- my experience as a hobbyist is those worst-case hiccups happen far less often than other kinds of failure. Since part of your motivation is to make something nontrivial in Go, I'd say it's reasonable to use Go and if you have problems meeting some hard-real-time control constraint then re-implement just that loop on a dedicated microcontroller (bare metal or some simple RTOS). > 2) what hardware should I use? RaspberryPI, or some super Arduino? or a more > specific microcontroller, perhaps controlled by a R-PI? RasPIs are cheap and have a large community, but are a little weak at I/O. I'm a big fan of the Beaglebone, which is not quite at RasPI's level but is still pretty cheap and popular and has better I/O abilities. There are an enormous number of boards in the Pi/Beaglebone/etc class, though; I wouldn't spend too much time worrying about which one is the absolute best. On the other hand, you *will* probably want to offload some stuff onto a Arduino-sized realtime processor at some point and then it doesn't matter as much what your "big" cpu is. You could do your initial steps 1 & 2 just using an Arduino as a relatively dumb I/O interface attached to your existing laptop/desktop (with the interesting algorithms running in Go on the host) and then you don't need to figure out Go cross-development until later. For example, this is what https://gobot.io/ does. (By "Arduino" I really mean any of the little boards of that size, many of which can be programmed using the Arduino IDE if you wish. I like the Teensy boards from PJRC, but again, there are many many good options.) There is a project ( https://tinygo.org/ ) to compile Go to small, OS-less devices like the larger Arduinos, but I have no experience with it. It might be a good fit for your projects though. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
