MQTT and Op222 in the Industrial Automation Space

When did you start Industry 4.0 TV and why? So I fell in love with Op222, building some automation systems mostly for small batch plans, manufacturing. This is where I came across things like OPC UA before I really discovered MQTT. Most people just don't understand that MQTT, even though it was invented in 98, 99, 2000, didn't become an industrial player until nine years later.