4 layers60 × 40 mm

TCD1304Rev2
CheckAG/spectrometer_HW
Refer to this link for the checksum integration https://www.tutorialspoint.com/cyclic-redundancy-check-crc-in-arduino
26 parts1
Printed circuit boards designed in KiCad and published on GitHub, each with its parts, layers and size, its README and its files; open any of them in PCBKit.

CheckAG/spectrometer_HW
Refer to this link for the checksum integration https://www.tutorialspoint.com/cyclic-redundancy-check-crc-in-arduino