No batteries, no supercapacitors, no problem: ONiO claims its design can harvest power from the radio spectrum to operate at up to 24MHz.
Norwegian healthcare-focused Internet of Things (IoT) specialist ONiO has unveiled ONiO.zero, an ultra-low-power RISC-V-based microcontroller capable of operating wholly from harvested energy — without needing a battery, capacitor, or any other form of energy storage.