Pseudonymous maker "Okuboheavyindustries" has shared the results of an experiment that combines freeform circuitry, energy harvesting, and desk ornamentation: the Solar Blinkenlights.
"ATtiny85, IXYS SM400K10L solar panel, five white SMD LEDs, one decoupling capacitor, 0.8mm copper wire, all embedded in resin," Okuboheavyindustries writes of the project's bill of materials. "[The] ATtiny is blinking the LEDs randomly."
While the resulting transparent block of resin is an attractive enough piece of artwork by itself, it serves a practical purpose too — as a proof-of-concept.
"[My] aim was to drive the ATtiny directly from the solar cell without a battery or super-capacitor," Okuboheavyindustries explains of the experiment. "Works well! I'm happy with how this came out!"
This isn't the maker's first experiment with transparent enclosures, though it's certainly the most polished: Earlier this year Okuboheavyindustries unveiled the Mini Mobile Mission Control, a portable tracker for the International Space Station (ISS) driven by an Adafruit QT Py.