I2C Scan

Main menu keys:

• n — InI2C internal bus
• e — ExI2C external bus

Scans addresses 1–119, lists responding devices, and shows the SDA / SCL pins in use.

Screenshots

InI2C / ExI2C

Shortcuts

Key	Action
h	Help (scan range and pins)

Entering the App runs a scan; leave and re-enter to scan again.

Usage

1. InI2C: confirm onboard peripheral addresses (e.g. IMU).
2. ExI2C: troubleshoot Grove / external I2C devices.
3. No devices → empty list; poor contact can make scans flaky.