Further to the utterly fantastic video here.
People seem to be having a fair crack at making the things.
A robotic flower from Akira Nakayasu of Kyushu University, Japan and Himawari… on display at Robosquare in Fukuoka (they’ve got a Robosquare? Why haven’t I got a robosquare?)
It follows your hand and its LEDs copy the movements – which is pretty cool, partly at least because Copying and Attention-seeking are two of the behaviours hard-wired into the Human Bios – it’s how we learn.