Looks like the underlying logic came from this blog series, which made me originally buy that particular device: https://hackaday.io/project/5301-reverse-engine

Looks like the underlying logic came from this blog series, which made me originally buy that particular device: https://hackaday.io/project/5301-reverse-engineering-a-low-cost-usb-co-monitor https://hackaday.io/project/5301-reverse-engineering-a-low-c... :)