June 2020
The project is built inside a box, which is then locked by an electro-magnet. To unlock the box someone has to bring the box to three different programmable GPS - locations (order is not important). The position match is indicated with three 5V-leds. If all locations are found, all leds will turn on and the lock unlocks.
Arduino - project working with a Nano v3 / NeoPixel 5V LED stripe with 3 LEDs / Neo 6-m gps module with antenna / electro magnet lock 5V / Li-Ion 18650 Battery
In the actual version the Project got a toggle button on PIN4 of the Nano to "reset" the EEPROM. If not pressed, the Nano saves the location - matches when powered off and loads them back if powered on again. (Until the button is pressed and the Memory ist reset)
