2 Ground Planes for 2-layer PCB?

[Sagar_Saini]

@Reverse engineering KiCad project from Gerber files

of this reverse-engineering tutorial is to re-create a complete KiCad project from partial information assuming the only information available is a schematic in some readable, (but not EDA form, such as a .pdf or a .png picture), and a set of gerber files. The

It’s normal, a 2layer PCB may have two ground filling planes at top and bottom layer. Because in 2layer PCB signal return paths, EMI and EMC problems are often cause noise. The ground plane help to keep them minimum. Moreover these types are designs are not made for PCB CNC milling because of having complexicities in tracks. Try to go with simple one and then switch according to the milling capabilities. You can get some standard data from the capabilities section of a profession manufacturer like JLCPCB.