Hello, I have followed your build and are about to to a similar reverse engineering of a weather station but my winddirection look different and Ineed some input on how I can fix it.

On my there are 8 IR leds on the perimiter and 4 IR sensitiv transistors in the middle. The outer leds are wired 2 and 2 with all the odds having common GND and all the even have common GND. So i have problem on how to turn the led on 1 by 1. Any inputs?