Would have been interesting if the authors had put in a little bit more effort, which seems to be par for the course on the other Make Magazine books I’ve read.
Biggest annoyance: a transistor is called for in the schematic without listing a part number. Sorry, authors, there’s a lot of transistors out there with a lot of hFE values.
The projects are kinda neat, it’s just that nobody did a good technical edit to make sure that it was actually repeatable.