CJMCU-388 BMP388 DIGITAL TEMPERATURE AND ATMOSPHERIC PRESSURE SENSOR WITH LOW POWER CONSUMPTION 24 BITS LOW NOISE
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(Pressure, Altitude, Temperature)
The BMP388 digital air pressure sensor is a very compact, low power and low noise 24-bit sensor. This absolute air pressure sensor is based on proven sensing principles for pressure and temperature measurements. The BMP388 sensor offers outstanding design flexibility and is specifically designed for a wide range of height tracking applications. The sensor offers a best-in-class temperature coefficient offset (TCO) between 0°C and 65°C for accurate height measurement over a wide temperature range. The digital sensor has low power consumption of 3.4μA at 1Hz and a wide measurement range from 300hPa to 1250hPa.
BMP388 Technical Data
The following table shows the key features of the BMP388 sensor. For more information, consult the datasheet.
| Operation range | 300 to 1250 hPa (pressure) -40 to +85ºC (temperature) |
| Interface | I2C and SPI |
| Average typical current consumption | 3.4 µA @ 1Hz |
|
Absolute accuracy pressure (typ.) P=900 …1100 hPa (T=25 … 40°C) |
±0.5 hPa |
|
Relative accuracy pressure (typ.) P=900…1100 hPa (T=25 … 40°C) |
±0.08 hPa |
| Noise in pressure (lowest bandwidth, highest resolution) | 0.03 Pa |
| Maximum sampling rate | 200 Hz |
BMP388 Pinout
Here’s the pinout of the BMP388 module we’re using—it might be slightly different for other modules.
| VIN | Powers the sensor (5V) |
| 3V3 | Powers the sensor (3V3) |
| GND | Common GND |
| SCK | SCL pin for I2C communication SCK pin for SPI communication |
| SDO | SDO (MISO) pin for SPI communication |
| SDI | SDI (MOSI) pin for SPI communication SDA pin for I2C communication |
| CS | Chip select pin for SPI communication |
| INT | Interrupt pin |
BMP388 Interface
As mentioned previously, the BMP388 sensor supports I2C and SPI interfaces.
BMP388 I2C
To use I2C communication protocol, use the following pins (for the Arduino Uno—if you’re using another model, check its I2C pins):
| BMP388 | Arduino |
| SDI (SDA) | A4 |
| SCK (SCL) | A5 |
BMP388 SPI
To use SPI communication protocol, use the following pins (for the Arduino Uno—if you’re using another model, check its SPI pins):
| BMP388 | Arduino |
| SCK | Pin 13 |
| SDI (MOSI) | Pin 11 |
| SDO (MISO) | Pin 12 |
| CS (Chip Select) | Pin 10 |
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- Replacement:- Damaged During Transit, Missing Parts Or Item Mismatch.
- Return:- Item mismatch or parts missing etc.
- No return/Replacement will apply if the Product has been subject to misuse, static discharge, neglect, accident, modification, or has been soldered or altered in any way.
- We accept no responsibility for improper installation of our products. Electrical polarity must be properly observed in hooking up electrical components.