4 layers90 × 54.7 mm

1st ESP32 Demo project
ashfaque-ur-rahman/ESP32-Multi-Sensor-PCB
ESP32-based multi-sensor PCB with temperature/humidity, light, and microphone sensors — 4 layer Board — KiCad design based on Tech Explorations tutorial
87 parts
KiCad boards from 2 GitHub repositories tagged “multi-sensor”, the most starred first; open any of them in PCBKit.

ashfaque-ur-rahman/ESP32-Multi-Sensor-PCB
ESP32-based multi-sensor PCB with temperature/humidity, light, and microphone sensors — 4 layer Board — KiCad design based on Tech Explorations tutorial

Boardoza/Boardoza_TPT29545_I2C_Bus_Switch_Breakout_Board
TPT29545 is a 4 bidirectional I²C bus switch solution designed to manage multiple identical I²C devices without address conflicts.