Performance parameter
1.Voltage：3.3V~5V
2.Current：<6mA
3.Volume:15.10mmx15.10mmx2mm
4.Pad spacing：up and down 100mil(2.54mm)， left and right 600mil(15.24mm)
5.Data interface：serial port(TTL level， baud rate support 9600， 115200(default)
| nae | function |
| VCC | Module powersupply， 3.3Vor5V input |
| RX | Serial data input， TTL level |
| TX | Serial data output， TTL level |
| GND | Ground wire |
| SCL | I2C clock line |
| SDA | I2C data line |
| DO | PD 4 connected to MCU |
| SWIM | Swim connected to MCU |
| DR DY | Dr dy connected to chip |
| D3 | PA 3 connected to MCU |
After sale instructions
