4 ms·
How about a little microcontroller and SD card entirely encapsulated in a brick, with a coil for power and communication with the outside world?
by gsliepen 2y ago
How about a little microcontroller and SD card entirely encapsulated in a brick, with a coil for power and communication with the outside world?
- pitaj 2y agoMay as well just use RFID tags, unless you have a lot of data.
- adolph 2y agoPull in power inductively from power lines to recharge battery. [0] Use ESP chip with rechargable coin cell [1]. Only turn on chip with no ssid broadcast every hour at some odd minute for a short time. [2] Put/get only URI & decrypt key, main body is on Mega or similar. Might also make for a neat Geocache. 0. https://hackaday.com/2024/01/27/harvesting-electricity-from-high-voltage-transmission-lines-using-fences/ https://hackaday.com/2024/01/27/harvesting-electricity-from-... 1. https://www.instructables.com/Remote-Control-ESP8266-With-Coin-Cell/ https://www.instructables.com/Remote-Control-ESP8266-With-Co... 2. https://arduino-esp8266.readthedocs.io/en/latest/esp8266wifi/soft-access-point-class.html https://arduino-esp8266.readthedocs.io/en/latest/esp8266wifi...
- password4321 2y agoPut that on a solar-powered drone that sleeps on commercial roofs where there is free WiFi, autonomously finding another if discovered. Drones on power lines: https://www.zmescience.com/science/news-science/drones-recharging-from-power/ https://www.zmescience.com/science/news-science/drones-recha...