Arduino Pro Mini ↔ MPU6050 Wiring Guide (Soldering Reference)

This document describes exactly how to connect an Arduino Pro Mini to an MPU6050 IMU using I²C.

Follow this 1:1 while soldering.

Overview

• Microcontroller: Arduino Pro Mini (ATmega328P)
• Sensor: MPU6050 (accelerometer + gyroscope)
• Communication: I²C
• Power: 3.3V or 5V (depends on your MPU6050 breakout)

I²C Basics (why only 2 data wires)

I²C uses:

• SDA → data line
• SCL → clock line

All devices:

• share the same SDA/SCL wires
• must share GND
• are addressed digitally (MPU6050 default: 0x68)