codable remote lock for treasure chest

thingiverse

It is a four-digit lock that can be activated remotely. The default code is 1234 but can be modified by editing the program. This device uses several components: - Two micro:bit cards - A servo motor sg90 - A 5V battery (like a powerbank) to power the servo motor - A USB cable to power the servo motor like this one for example: https://www.amazon.com/gp/product/B00M552AE2/ref=ppx_yo_dt_b_asin_title_o07__o00_s00?ie=UTF8&psc=1 - Two springs The pieces are based on the Taiwantoni lock and his idea of using a BBC micro:bit card: https://www.thingiverse.com/thing:3210023 Other models used include: https://www.thingiverse.com/thing:2225904 https://www.thingiverse.com/thing:2225896 https://www.thingiverse.com/thing:2968545 The program for the remote BBC micro:bit card is located here: https://makecode.microbit.org/_eiRakVFD6b5h The program for the card that controls the opening of the lock is located here: https://makecode.microbit.org/_P87eXeffwFw9