The wiring is “painted on” using a 3D MID (Molded Interconnect Device) process. The exoskeleton is 3D printed but they then use the outer surface of that exoskeleton as a circuit board for much of the circuitry. Watching a group of them cooperate to move objects around looks so real that you’re instantly reminded of the pests crawling across your floor, but looking at them up close they’re a treasure trove of ideas for your next robot project. keeps coming up with new tricks that make us both envious and inspired. As a finalist for the Rethink Displays challenge of the 2021 Hackaday Prize, we’re looking forward to seeing the project develop over the coming months. Early tests look promising, but clearly has quite a bit of work ahead of him. We’ve seen the ESP32 drive a laser galvanometer to play a game of Asteroids, but recreating such a setup in a small enough package to fit onto a pair of glasses would certainly be an impressive accomplishment. The tentative plan is to generate the vector data with a smartphone application, send it to an ESP32 microcontroller within the glasses, and then push the resulting analog signals through a 100 V DC-DC boost converter to get the mirror moving. has put together a prototype of what the mirror system might look like, but says driving the high-voltage piezo actuators poses some unique challenges. Piezo actuators are used to steer the mirror. By bouncing a low-power laser off of a piezo-actuated mirror, the hope is that the glasses will be able to project simple vector graphics onto a piece of reflective film usually used for aftermarket automotive heads-up displays (HUDs). While they might not be able to compete with the latest Microsoft HoloLens, these laser AR classes from promise to be far cheaper and much more approachable for hackers. Unfortunately for those looking to experiment with this technology, the devices released so far have been prohibitively expensive. Tech companies like Google and Microsoft have been working on augmented reality (AR) wearables that can superimpose images over your field of view, blurring the line between the real and virtual.
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