https://makertube.net/videos/watch/891ff04a-c581-4653-b03b-d74a0d451cc6 Experiments on NFC with a simple home-build circuit: My phone's 13.56 MHz field delivers energy to a ST25 chip via a hand-wound coil, powering it up, receiving a simple command via NFC, subsequently waking up a Pico microcontroller that executes the command. In this case, slow or fast flashing of a LED. Firmware, PCB and 3D-printable case are open source. This work was given an honourable mention in the "Least Power" category of the Hackaday Green-Powered Challenge 2026. https://hackaday.io/project/205461-harvesting-nfc-energy-to-transmit-commands https://wake-electronics.com https://www.crowdsupply.com/wake-electronics/tinta Mon, 24 Aug 2026 21:45:27 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://spectra.video https://spectra.video/lazy-static/avatars/71f5d173-eea9-47a7-b254-f7e91f9f5d25.png https://makertube.net/videos/watch/891ff04a-c581-4653-b03b-d74a0d451cc6 All rights reserved, unless otherwise specified in the terms specified at https://spectra.video/about and potential licenses granted by each content's rightholder.