Glad!

Further probing reveals that the original design was by a guy called Marcus. Later, his design was improved upon by Karl, and he's keeping on adding features to it (including ESR, I think). The Chinese stuff on Ebay is pretty much based on that.

I put together a basic, minimalistic version of the original for a pal (minus the auto-switch off circuitry and the LCD, the data displayed on the LCD is also given out on the UART, can be monitored on the PC).