For Raspberry Pi--Sample code 3-Tap detection(tap.py)

Requirements

• Hardware

  • Raspberry Pi 4B(or similar) × 1
  • LIS2DW12 Triple Axis Accelerometer × 1
  • Jumper wires

• Software

  • Download and install the LIS Series Python Library.
    • Raspberry Pi Official OS

Connection

• Connect the module to the Raspberry Pi according to the connection diagram. The default I2C address is 0x19.

Driver Installtion

1. Enable the I2C interface of the Raspberry Pi. If it is already enabled, you can skip this step. Open Terminal, type the following command, and press Enter:

   sudo raspi-config
   

   Then use the up and down keys to select "5 Interfacing Options", press Enter, select "P5 I2C", and press Enter to confirm "YES". Restart the Raspberry Pi main control board.

2. To install Python dependent libraries and git, the Raspberry Pi needs to be connected to the Internet. If it is already installed, you can skip this step. In the terminal, type the following commands in sequence, and press Enter:

   sudo apt-get update
   

   sudo apt-get install build-essential python-dev python-smbus git
   

3. Download the LIS series driver library. In the terminal, type the following commands in sequence and press Enter:

   cd Desktop
   

   git clone https://github.com/DFRobot/DFRobot_LIS
   

Note：If you choose to use I2C (0X18) and SPI communication methods, you need to modify the demo to the corresponding communication. You may encounter situations where you do not have the authority to modify the sample program. The following is the solution:

1. Query permissions under the file directory which needs to be modified, the command is:

   ls -al
   

2. Modify the file permissions, the command is:

sudo chmod a+w XXX.py

At this point, the file write permission is available for everyone.

Sample code

• In the terminal, type the following command and press Enter, run the sample code:

cd /home/pi/Desktop/DFRobot_LIS/Python/raspberrypi/examples/LIS2DW12 

cd tap  

 python tap.py

Result