Design with Adafruit LPS35HW in Cirkit DesignerThe Adafruit LPS35HW is a state-of-the-art pressure sensor module capable of measuring barometric pressure and ambient temperature with high precision. This compact sensor is ideal for a wide range of applications, including weather stations, altitude measurements for drones, indoor navigation, and fitness trackers. Its low power consumption and support for both I2C and SPI communication interfaces make it versatile for use in embedded systems, particularly those that require long battery life.
This circuit features an Adafruit QT Py RP2040 microcontroller interfacing with an MPU-6050 accelerometer, an Adafruit APDS-9960 sensor, and a 0.96" OLED display via I2C communication. It is powered by a 3.7V LiPo battery and includes a green LED with a current-limiting resistor connected to an analog pin of the microcontroller.
Open Project in Cirkit Designer
This circuit is a portable, battery-powered system featuring an Adafruit QT Py RP2040 microcontroller that interfaces with an OLED display, a proximity sensor, an accelerometer, and an RGB LED strip. The system is powered by a lithium-ion battery with a step-up boost converter to provide 5V for the LED strip, and it includes a toggle switch for power control. The microcontroller communicates with the sensors and display via I2C.
Open Project in Cirkit Designer
This circuit features an Adafruit QT Py RP2040 microcontroller interfaced with an APDS9960 proximity sensor, an MPU6050 accelerometer and gyroscope, and an OLED display via I2C communication. It also includes a buzzer controlled by the microcontroller and is powered by a 3.7V LiPo battery with a toggle switch for power control.
Open Project in Cirkit Designer
This circuit is a sensor and display system powered by a 3.7V LiPo battery with a boost converter. It uses an ESP8266 NodeMCU to read data from an MPU-6050 accelerometer/gyroscope and display information on a 0.96" OLED screen, while also controlling an RGB LED.
Open Project in Cirkit Designer| Pin Number | Name | Description |
|---|---|---|
| 1 | VDD | Power supply (1.7V to 3.6V) |
| 2 | GND | Ground reference for the power supply |
| 3 | SDA | I2C Data Line / SPI Serial Data Out (SDO) |
| 4 | SCL | I2C Clock Line / SPI Serial Clock (SCK) |
| 5 | SA0 | I2C Address Selection / SPI Serial Data In (SDI) |
| 6 | CS | SPI Chip Select (active low) |
Below is an example code snippet for interfacing the Adafruit LPS35HW with an Arduino UNO using the I2C communication protocol.
#include <Wire.h>
#include <Adafruit_LPS35HW.h>
Adafruit_LPS35HW lps = Adafruit_LPS35HW();
void setup() {
Serial.begin(9600);
// Wait for serial monitor to open
while (!Serial) { delay(10); }
Serial.println("LPS35HW Test");
if (!lps.begin_I2C()) { // Initialize over I2C
Serial.println("Failed to find LPS35HW chip");
while (1) { delay(10); }
}
Serial.println("LPS35HW Found!");
}
void loop() {
Serial.print("Pressure: ");
Serial.print(lps.readPressure());
Serial.println(" hPa");
Serial.print("Temperature: ");
Serial.print(lps.readTemperature());
Serial.println(" C");
delay(500);
}
Ensure you have installed the Adafruit_LPS35HW library before uploading this code to your Arduino UNO.
Q: Can the LPS35HW be used outdoors? A: Yes, but it should be protected from direct exposure to water and extreme environmental conditions.
Q: What is the default I2C address? A: The default I2C address is 0x5C when SA0 is connected to GND, and 0x5D when connected to VDD.
Q: How can I calibrate the sensor? A: Calibration procedures are detailed in the sensor's datasheet and typically involve taking readings at known pressure and temperature points.
For further assistance, consult the Adafruit LPS35HW datasheet and the Adafruit support forums.