4 layers80 × 87.6 mm

AratMicro
vorlaxen-labs/AratMicro
High-performance, open-source micromouse robot platform built for Robosam and MEB Robot (Ministry of National Education Robotics Competition, Turkey).
110 parts1MIT
KiCad boards from 1 GitHub repository tagged “maze-solver”, the most starred first; open any of them in PCBKit.

vorlaxen-labs/AratMicro
High-performance, open-source micromouse robot platform built for Robosam and MEB Robot (Ministry of National Education Robotics Competition, Turkey).