[sdiy] another finished project-ringo

[Adam Schabtach]

I've also heard that they don't come with documentation, and spare parts are
really difficult to obtain.

--Adam

> Congratulations Dan!
> Be warned though that some of these units start becoming 
> uncalibrated and chaotic after 16 years of use or so.  I 
> haven't found a way to recalibrate them.  Your best bet is to 
> establish a pattern of routine maintanance and observation.