BT Terminal is a free Chrome add-on designed for connecting and communicating with Bluetooth SPP devices, such as Arduino circuits. It allows users to send and receive text data seamlessly, with features akin to the Arduino IDE's serial monitor. Users must ensure Bluetooth is enabled on their Chromebook and pair their SPP devices beforehand to establish a connection. Once connected, the app displays the available devices in a dropdown list for easy access.

The user interface includes a text input box for sending commands and options for selecting line endings. Additional functionalities include buttons for clearing the text and saving the received data, which can be downloaded in one go. The app retains text even after disconnecting, facilitating data collection from multiple devices without losing information. As an open-source project, it offers transparency and flexibility for users interested in exploring its code.