# Bluetooth Connection

If you want to use [Joint Calibrator](https://docs.petoi.com/desktop-app/joint-calibrator), [Skill Composer](https://docs.petoi.com/desktop-app/skill-composer) in the Petoi Desktop App, or a coding block in [Mind+](https://docs.petoi.com/block-based-programming/petoi-coding-blocks) via computer Bluetooth, you need to pair the mainboard's Bluetooth with the computer first.