我们用的是这颗芯片：LPS331AP

此芯片基于I2C接口，除了气压传感功能外，还可以驱动高亮LED作为信标。

详细资料参考：
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Key Features：
260 to 1260 mbar absolute pressure range
High-resolution mode: 0.020 mbar RMS
Low power consumption[s:10]ow resolution mode: 5.5 μAHigh resolution mode: 30 μA
High overpressure capability: 20x full scale
Embedded temperature compensation
Embedded 24-bit ADC
Selectable ODR from 1 Hz to 25 Hz
SPI and I2C interfaces
Supply voltage: 1.71 to 3.6 V
High shock survivability: 10,000 g
Small and thin package
ECOPACK® lead-free compliant

PS，咱做的是民用产品，所以可能参数上有局限，能不能用在箭上则需要LZ自行判断了。