Communicate
Bluetooth Transmission
🧩 Fun Guide to Bluetooth Transmission Blocks (Clu-blocks Pro)
📶 Important! Bluetooth blocks let your robot talk to other devices — like phones, tablets, or other robots. You can send messages, receive commands, and even check if the connection worked. It’s like giving your robot a walkie-talkie!
| # | Block | What it does | Dropdown options | What the options mean |
|---|---|---|---|---|
| 1 | Bluetooth ble_c Init as Central Device (Host) |
Sets up your robot as the controller | — | Central devices scan and connect to others — like the boss of the Bluetooth network |
| 2 | Bluetooth ble_p Init as Peripheral Device (Slave) name "Clu-Bots" |
Sets up your robot as a responder | — | Peripheral devices wait to be connected — like a helper robot |
| 3 | ble_c Scan Bluetooth |
Starts searching for nearby devices | — | Finds Bluetooth devices around you — like radar |
| 4 | ble_c joinBluetooth name "Clu-Bots" |
Connects to a device by name | name, MAC Address |
– name: connect using device name– MAC Address: connect using unique hardware ID |
| 5 | ble_c OneNET disconnected |
Disconnects from OneNET via Bluetooth | — | Stops the Bluetooth link to the cloud — useful for switching modes |
| 6 | ble_x Get local MAC address |
Gets your robot’s Bluetooth ID | — | Useful for identifying your robot or sharing its address |
| 7 | ble_x Whether the connection is successful |
Checks if Bluetooth is connected | — | Returns true or false — great for debugging or triggering actions |
| 8 | ble_x Bluetooth send data body "Clu-Bots" |
Sends a message over Bluetooth | — | You can send text, numbers, or commands to another device |
| 9 | Receive message do callback function ble_method |
Runs a function when a message is received | — | Like saying “when I get a message, do this” — perfect for remote control or chat |
| 10 | ble_method with: data |
Defines what to do with received data | — | You can check the message and decide how to respond |
| 11 | if data = "Clu-Bots" |
Checks if the message matches something | — | Great for filtering messages — like “if I hear ‘Clu-Bots’, turn on LED” |
🧠 Quick Tips for Students
- Use Central mode to control other devices — like a remote.
- Use Peripheral mode to be controlled — like a robot waiting for orders.
- Use send + receive to build chat systems, remote controls, or multiplayer games.
- Always check connection status before sending — it saves bugs and frustration.
- Use callback functions to make your robot react instantly — like a Bluetooth reflex!
