4 layers92 × 48.7 mm

ATMega Board
DoImant/KiCad-ATMega-Board
ATMega Barebone PCB. Applicable for battery powered applications. Usable microcontrollers: ATTiny88, ATmega48A/PA, 88A/PA, 168A/PA, 328/P
29 parts2CC-BY-SA-4.0
KiCad boards from 2 GitHub repositories tagged “atmega168”, the most starred first; open any of them in PCBKit.

DoImant/KiCad-ATMega-Board
ATMega Barebone PCB. Applicable for battery powered applications. Usable microcontrollers: ATTiny88, ATmega48A/PA, 88A/PA, 168A/PA, 328/P
