Automation: PID-based DC motor controller using the Raspberry Pi

RE: Automation: PID-based DC motor controller using the Raspberry Pi

michaelkellett — Sat, 05 Jan 2019 09:01:32 GMT

I'm missing something here - where is the actual code ?

Any video/picture of it actually working ?

RE: Automation: PID-based DC motor controller using the Raspberry Pi

Jan Cumps — Fri, 04 Jan 2019 23:43:34 GMT

For C++ lovers, there's an Arduino PID library that can be ported to the Raspberry Pi: Improving the Beginner’s PID – Introduction « Project Blog

Some of us have used this library before. You'd need to come up with a Pi-friendly way to find the milliseconds lapsed (implement a millis() function) and get a reasonably stable timed loop.

RE: Automation: PID-based DC motor controller using the Raspberry Pi

genebren — Fri, 04 Jan 2019 21:01:16 GMT

Great write-up. PID controllers do work very well. The issue sometimes is in tuning the P, I and D gains to get the system to behave as expected. Simulators can help if you can model the load or controlled item reasonably well. I have used this type of controller on many projects, mostly dealing with controlling temperature within a zone (or multiple zones).

Gene

RE: Automation: PID-based DC motor controller using the Raspberry Pi

DAB — Fri, 04 Jan 2019 20:34:42 GMT

Very good overview of motor control basics.

DAB

RE: Automation: PID-based DC motor controller using the Raspberry Pi

Jan Cumps — Fri, 04 Jan 2019 20:32:15 GMT

All attached code in this article are written in Python and tested on the Raspberry Pi

The attachments don't show at the end of the article for me.