At the time of starting the assembly of the project we encountered the problem that the microcontroller chip - RP2-B2 (RP2040-B2) only has 3 ADC pins, while we require 5 pins, since we will use 5 photodiodes. Therefore, we decided to use the debugging board with the STM32F401CCU6 chip, which has 16 ADC-pins.

That's why on April 26th we had to carry out the entire welding process again with the new microcontroler.