Teensy++ (AVR) PLC controller – version 1

Here it is! The AT90USB646-based homebrew programmable logic controller. It’s not quite a Simatic S7 (and it’s not even completed in most parts), but it’s a nice start. A more complete and IEC-ish environment on the development software part (among many other things) would be nicer, but… the code is (will be) here, so extend […]

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The PLC update

After looking at the Beremiz iec2c compiler source, I decided that modifying it to fit into this project is probably not the way to go. At this time, I’m deep into experimenting with the Coco/R framework on Java to produce my own IEC compiler. To make things simpler, I decided to support

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The homebrew AVR-based PLC – the introduction

Few years ago when I was searching the net for similar projects to gather some stuff for my potential graduate thesis, there was just a plain void. On techie forums ocasionaly some excited novice popped up with greeny questions about what would take to make a PLC, etc., just to get a bunch of “smart” […]

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