Pololu
LPS331AP Pressure/Altitude Sensor Carrier with Voltage Regulator
A breakout board for ST's LPS331AP digital barometric pressure sensor. This sensor measures absolute pressure from 260 to 1260 mbar with excellent accuracy (...
A breakout board for ST's LPS331AP digital barometric pressure sensor. This sensor measures absolute pressure from 260 to 1260 mbar with excellent accuracy (±2 mbar), making it ideal for altitude estimation, weather monitoring, and indoor navigation applications.
The board includes an onboard 3.3V regulator and level shifters, allowing it to work with both 3.3V and 5V systems. Standard 0.1" pin spacing makes it breadboard-friendly.
Key Features
- High Accuracy – ±2 mbar absolute accuracy over temperature
- Low Noise – 0.02 mbar RMS in high-resolution mode
- Wide Range – Measures 260 to 1260 mbar
- Dual Interface – Supports both I²C and SPI
- Voltage Flexible – Works with 2.5V to 5.5V input
- Breadboard Friendly – 0.1" (2.54mm) pin spacing
Ideal For
- Altitude measurement for drones and rockets
- Weather station projects
- Indoor floor-level detection
- Barometric data logging
- GPS altitude augmentation
Specifications
- Sensor: ST LPS331AP
- Pressure Range: 260–1260 mbar (26–126 kPa)
- Absolute Accuracy: ±2 mbar
- RMS Noise: 0.02 mbar (high-resolution mode)
- Interface: I²C or SPI
- Input Voltage: 2.5V to 5.5V
- Onboard Regulator: 3.3V
- Pin Spacing: 0.1" (2.54mm)
Package Contents
- 1× LPS331AP Pressure Sensor Breakout Board
Jargon buster
Plain-language definitions for the technical terms used above.
- 3.3V regulator
- A 3.3V regulator is a power circuit that provides a steady 3.3 volts for parts that need that supply voltage. On a breakout board, it can let the sensor run safely even when the connected microcontroller or power source uses a higher voltage.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- GPS
- The US satellite navigation system used by GNSS receivers to calculate position and time. Support for GPS is important because it is widely available and often used together with other constellations for more reliable positioning.
- RMS
- RMS is a way of describing the effective level of an AC signal, such as an audio output voltage. It helps compare audio output levels more meaningfully than a peak voltage number.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
Find this product in
Brands
Related Tutorials
Free guides on learn.littlebird.com.au
