Experiment with Arduino, Bluetooth module and Web Bluetooth API.

Demo video here

• Arduino
• Bluetooth module v4 (HM-10 in my case)
• nRF Connect app (in my case)
• Led (3 colors in my case)

• Upload sketch (ble2.ino) to your Arduino
• Connect your module and led to Arduino
• Open index.html locally or use this link
• Profit

• GND -> GND
• VCC -> 3.3V
• RXD -> 8 pin
• TXD -> 7 pin

• red -> 3 pin
• green -> 2 pin
• blue -> 4 pin