About a month ago I purchased a Digi-Comp I v2.0 from Minds-On Toys (see http://www.mindsontoys.com/kits.htm for information). This “toy” is a mechanical computer kit that, once built, can execute simple programs. I haven’t experimented much with the programming aspect yet, but have completed the assembly of my Digi-Comp I. This posting attempts to describe my process, mistakes and hints so that others might build and use their Digi-Comp I v2.0 with a few less problems.