Remote control:
At the bottom right of the schematic is a shaded-out Logic gate on its own ... that is the remote control.
Highlight that shaded-out Logic gate and adjust its voltage as follows:
default ... no LED on
1v to 2v ... green LED on
2v to 3v ... yellow LED on also
3v to 4v ... red LED on also ... all three LEDs flashing
4v + ... all three LEDs stay on
just an EC doodle
