So I fixed up my Heathkit IO-12 oscilloscope and the Heathkit RG-8 frequency generator is next on the to-fix list. I'm also still working on building the oscilloscope calibrator; it's based on a Heathkit design.
HERO 1 (as above left).
I guess some of that envy shows in my goofy sketch of Edward Isaac Bot's head, what with the integrated hex programming keypad. I think it's safe to say that feature would be ditched in a modern verison...
Apparently a Heathkit HE-Robot 2000 is available these days, a rebadged PC-Bot 914 from White Box Robotics. (The picture below is from Retro Thing; presumably they got the pic from the Heathkit site or a news article or something).