Nearly two years ago, I wrote about Google’s App Inventor. Unfortunately, Google discontinued it in December of last year (though, happily, MIT now maintains it). Recently, Google released Blockly, ...

Recently I became interested in PLC programming. I'm not planning on working in this field on building a career, just want to play with a bit. I've some background in software development and ...

When a PLC is used primarily to replace relays, timers, and counters, it's hard to beat the simplicity and usefulness of ladder diagram programming. Their ability to accept programming in ladder ...