Growing up I tinkered with BEAM robotics. It's a philosophy of design that begins with these types of very simple reactive circuits usually from scavenged parts. It's nice to see someone break down the effect of different variables in the design.
Same, BEAM was my gateway to electronics growing up.
Reminds me of BIO bugs from when I was a kid
Mark Tilden was the engineer behind this toy and many others like Robosapien.
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