LIS3DSH accelerometer sensor and an ESP32

In this example we connect a LIS3DSH sensor to an ESP32.

The LIS3DSH is an ultra-low-power high-performance three-axis linear accelerometer belonging to the “nano” family with an embedded state machine that can be programmed to implement autonomous applications.

The LIS3DSH has dynamically selectable full scales of ±2g/±4g/±6g/±8g/±16g and is capable of measuring accelerations with output data rates from 3.125 Hz to 1.6 kHz. The self-test capability allows the user to check the functioning of the sensor in the final application. The device can be configured to generate interrupt signals activated by user-defined motion patterns.

The LIS3DSH has an integrated first-in, first-out (FIFO) buffer allowing the user to store data in order to limit intervention by the host processor. The LIS3DSH is available in a small thin plastic land grid array package (LGA) and is guaranteed to operate over an extended temperature range from -40 °C to +85 °C.

Key Features

• Wide supply voltage, 1.71 V to 3.6 V
• Independent IOs supply (1.8 V) and supply voltage compatible
• Ultra-low power consumption
• ±2g/±4g/±6g/±8g/±16g dynamically selectable full scale
• I²C/SPI digital output interface
• 16-bit data output
• Programmable embedded state machines
• Embedded temperature sensor
• Embedded self-test
• Embedded FIFO
• 10000 g high shock survivability

Parts List

Name	Link
ESP32		Aliexpress link Amazon Ebay
LIS3DSH		Aliexpress link Ebay link Amazon Link
Connecting cables		Aliexpress link Amazon Ebay

Connection

ESP32 and LIS3DSH

Code

You need to download and install the https://github.com/yazug/LIS3DSH library

#include <Wire.h>
#include <LIS3DSH.h>

LIS3DSH accel;

void setup() 
{
  Serial.begin(9600);
  Wire.begin();
  accel.enableDefault();
}

void loop() 
{
  int16_t x, y, z;
  int8_t temperature;

  accel.readAccel(&x, &y, &z);
  accel.readTemperature(&temperature);

  Serial.print("Accel ");
  Serial.print("X: ");
  Serial.print(x);
  Serial.print(" Y: ");
  Serial.print(y);
  Serial.print(" Z: ");
  Serial.print(z);
  Serial.print(" T: ");
  Serial.println(temperature);

  delay(100);
}

Output

Open the serial monitor and you should see something like this – move the module around

Accel X: 361 Y: 5144 Z: 15700 T: -9
Accel X: 409 Y: 5094 Z: 15698 T: -9
Accel X: 365 Y: 5166 Z: 15672 T: -9
Accel X: 377 Y: 5157 Z: 15667 T: -9
Accel X: 1787 Y: -6196 Z: 31329 T: -9
Accel X: 8636 Y: 2808 Z: 15889 T: -9
Accel X: -12408 Y: 5444 Z: -16233 T: -9
Accel X: 8588 Y: 27588 Z: 19617 T: -9
Accel X: 9702 Y: 25909 Z: 522 T: -9
Accel X: -15119 Y: 6115 Z: -19391 T: -9
Accel X: 12926 Y: -3281 Z: 5542 T: -9
Accel X: 4313 Y: -32032 Z: 32757 T: -9
Accel X: -7917 Y: 8240 Z: 20966 T: -9

Link