3 ms·
Things like that work for communication at very short ranges (Bluetooth has a pretty limited range). If you want something to draw power from a distant transmit
by tdeck 5y ago
Things like that work for communication at very short ranges (Bluetooth has a pretty limited range). If you want something to draw power from a distant transmitter and to have any ability at all to do I/O (including RF output), you need a much bigger antenna to capture more energy. You'd essentially need something like this loop antenna crystal radio:
http://makearadio.com/crystal/19.php http://makearadio.com/crystal/19.php
- dougmwne 5y agoThese Wiliot chips already draw power from distant LTE towers, can do I/O through GPIO and can communicate back 20 meters through a Bluetooth LE ping. Imagine a new smart thermostat that gathered temperature data from a dozen unpowered temperature sensors throughout your home, adjusted accordingly, then sent you a report on your home's insulation performance. These tags could be used for that today. https://support.wiliot.com/hc/en-us/articles/360059009614-Wiliot-Extended-Overview https://support.wiliot.com/hc/en-us/articles/360059009614-Wi...