Someone encoded a 10-character password into this weird circuit. Flip the switches to encode single bits. The password starts with MSB first at the red pillar, towards the green. Then from the green to the blue pillar. When you've entered the right password, press the button next to the blue pillar to verify. Encode this password in SECT{...} to obtain the flag. (Works with minetest 0.4.16+repack-4 and mesecons 2017.03.05-1 from Ubuntu bionic 18.04.2 LTS)