Pinout & Hardware Interface
| Barometric Pressure Sensor Pin |
ESP32 Pin Connection |
| SCL |
SCL |
| SDA |
SDA |
| VCC |
5V |
| GND |
GND |
Note: The expansion board is attached directly to the ESP32 controller board for seamless pin mapping and testing.
Frequently Asked Questions (FAQ)
Q
What are the primary sensing capabilities of this module?
The sensor module utilizes a BMP280 chip to perform two main functions: ambient temperature detection and high-accuracy atmospheric air pressure detection.
Q
What is the communication protocol and operating voltage?
The module operates at a supply voltage of 5V and outputs measurement data via the standard I2C digital communication interface.
Q
What are the measurement ranges and relative accuracy?
It supports an atmospheric pressure range of 300 to 1100 hPa with a relative accuracy of ±0.12 hPa (equivalent to ±1 meter). The temperature range spans 0°C to 65°C with a 0.01°C resolution accuracy.
Q
How is this sensor wired to an ESP32 microcontroller?
Connect the sensor pins directly to the ESP32: SCL connects to SCL, SDA to SDA, VCC to 5V, and GND to GND. An expansion board mounted on the ESP32 controller makes these pin connections straightforward.
Q
In what projects and equipment can this sensor be utilized?
Typical application scenarios include weather observation stations, pneumatic altimeters, unmanned aerial vehicles (UAVs / drones), and three-dimensional indoor navigation systems when fused with IMU sensors.