Ebyte E104-BT12NSP-TB Bluetooth mesh test board USB Interface
[Interface]：USB
[Size]：46.5*26mm
[Introduction]：The E104-BT12NSP-TB test board uses a USB interface, which can be used to quickly test the Bluetooth-related features and functions of the E104-BT12NSP.
| Pin No. | Pin name | Pin direction | Pin usage |
| 1 | RST | Input | Module reset button |
| 2 | SW1 | Input | retain |
| 3 | SW2 | Input | retain |
| 4 | TX | output | Serial output pin |
| 5 | RX | Input | Serial input pin |
| 6 | VCC | - | The jumper cap selects whether it is USB powered or |
| 7 | BAT | - | Battery power supply pin |
| 8 | +5V | - | External power supply pin (not powered by USB) |
| 9 | LED_R (PD2) | output | Pwm output |
| 10 | LED_G (PC1) | output | Pwm output |
| 11 | LED_B(PB5) | output | Pwm output |
| 12 | LED_B(PB4) | output | Network indicator |