Tilt Sensor

Tilt Sensor Tilt Sensor

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Primary Attribute Category: Sensor, Modules {{{userDefinedInfo}}}: {{{userdefinedvalue}}} Brand: Waveshare

Website International: Waveshare website Chinese: 官方中文站点

Onboard Interfaces I/Os

Related Products

Overview

Specifications

• Voltage: 3C ~ 5.5V
• Output Type: TTL
• Dimension: 53.0mm * 18.0mm
• Fixed Hole Dimension: 2.00mm

Principle: The tilt sensor is essentially a ball switch that closes and loosens when the environment it is in vibrates or tilts.

Applications

• Shake detection
• Guard alarm
• Smart car
• Electric bricks

Pinouts

• VCC ↔ 3.0V ~ 5.5V
• GND ↔ power supply ground
• DOUT ↔ MCU.IO (digital output)

Get Started at Pico

Pico Quick Start

Firmware Download

• MicroPython Firmware Download

• C_Blink Firmware Download

Text Tutorial

Introduction

• Raspberry Pi Pico

MicroPython Series

• 【MicroPython】 machine.Pin Function
• 【MicroPython】 machine.PWM Function
• 【MicroPython】 machine.ADC Function
• 【MicroPython】 machine.UART Function
• 【MicroPython】 machine.I2C Function
• 【MicroPython】 machine.SPI Function
• 【MicroPython】 rp2.StateMachine

C/C++ Series

For C/C++, it is recommended to use Pico VS Code for development. This is a Microsoft Visual Studio Code extension designed to make it easier for you to create, develop, and debug projects for the Raspberry Pi Pico series development board. Whether you are a beginner or an experienced professional, this tool can help you confidently and easily develop Pico. Below we will introduce how to install and use the extension.

• Official website tutorial: https://www.raspberrypi.com/news/pico-vscode-extension/.
• This tutorial is applicable to Raspberry Pi Pico, Pico2, and our company's RP2040 and RP2350 series development boards.
• The development environment defaults to Windows as an example. For other environments, please refer to the official website tutorial for installation.

Arduino IDE Series

Install Arduino IDE

1. Download the Arduino IDE installation package from Arduino website.
   
2. Just click on "JUST DOWNLOAD".
   
3. Click to install after downloading.
   
4. Note: You will be prompted to install the driver during the installation process, we can click Install.
   

Install Arduino-Pico Core on Arduino IDE

1. Open Arduino IDE, click the File on the left corner and choose "Preferences".
   
2. Add the following link in "Additional boards manager URLs", then click OK.
   

   https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json

   
   Note: If you already have the ESP32 board URL, you can separate the URLs with commas like this:

   https://dl.espressif.com/dl/package_esp32_index.json,https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
   

3. Click on Tools -> Board -> Board Manager -> Search for pico, it shows installed since my computer has already installed it.
   
   

Upload Demo At the First Time

1. Press and hold the BOOTSET button on the Pico board, connect the Pico to the USB port of the computer via the Micro USB cable, and release the button when the computer recognizes a removable hard drive (RPI-RP2).
   
   
2. Download the demo from #Resource, open the D1-LED.ino under arduino\PWM\D1-LED path.
3. Click Tools -> Port, remember the existing COM, do not need to click this COM (different computers show different COM, remember the existing COM on your computer).
   
4. Connect the driver board to the computer with a USB cable, then click Tools -> Ports, select uf2 Board for the first connection, and after the upload is complete, connecting again will result in an additional COM port.
   
5. Click Tools -> Board -> Raspberry Pi Pico/RP2040 -> Raspberry Pi Pico.
   
6. After setting, click the right arrow to upload.
   
   • If you encounter problems during the period, you need to reinstall or replace the Arduino IDE version, uninstall the Arduino IDE clean, after uninstalling the software you need to manually delete all the contents of the folder C:\Users\[name]\AppData\Local\Arduino15 (you need to show the hidden files in order to see it) and then reinstall.

Open Source Demo

• MicroPython Demo (GitHub)
• MicroPython Firmware/Blink Demo (C)
• Official Raspberry Pi C/C++ Demo
• Official Raspberry Pi MicroPython Demo
• Arduino Official C/C++ Demo

Hardware Connection

Sensor	Pico	Description
VCC	3.3V	Power input
GMD	GND	Power ground
DOUT	GP22	Digital output

Download examples

Use the Raspberry Pi as the host device. Open a terminal and run the following commands to download the example.

sudo apt-get install p7zip-full
cd ~
sudo wget  https://files.waveshare.com/upload/b/b6/Tilt-Sensor-code.7z
7z x Tilt-Sensor-code.7z -o./Tilt-Sensor-code
cd ~/Tilt-Sensor-code
cd Pico/c/build/

Examples

C codes

• Go into the c directory.

cd ~/Tilt-Sensor-code/Pico/c/build

• Add the path of SDK.

export PICO_SDK_PATH=../../pico-sdk

Note that if the path of your SDK is different, you need to modify the command and use the correct path to export

• Generate Makefile and build.

cmake ..
make -j9

• After building, a uf2 file is generated.
• Press and hold the button of Pico, connect it to Raspberry Pi then release the button.
• Copy/Drag the uf2 file to the portable disk (RPI-RP2) recognized.

cp main.uf2 /media/pi/RPI-RP2/

Micropython codes

Windows

• 1. Press the BOOTSET key on the Pico board, connect the Pico to the USB port of the PC with a Micro USB cable, and release the button after the computer recognized a movable disk (RPI-RP2).
• 2. Copy the Rp2-pico-20210418-v1.15.7z file from the Python directory to a recognized removable disk (RPI-RP2).
• 3. Open the Thonny IDE (Note: use the latest version of Thonny, otherwise there is no support package for Pico, the current latest version for Windows is v3.3.3).
• 4. Click Tools -> Settings -> Interpreter, and select Pico and the corresponding port as shown in the picture.

It also provides a demo.

• 5. File -> Open -> Tilt Sensor.py, click to run as shown below:

Raspberry Pi

• Flash the Micropython firmware first.
• Open the Thonny IDE (Menu->Programming->Thonny Python IDE).
• 【Optiional】If the Thonny IDE in the Raspberry Pi is not the new version that supports Pico, please upgrade it first.

sudo apt upgrade thonny

• Configure Interpreter, choose Tools -> Options... -> Interpreter, choose MicroPython (Raspberry Pi Pico) and the ttyACM0 port.

• Click File -> Open.. and browser the micro python codes (Tilt Sensor.py) to run the codes.

Expected result

• When the module is shaken or tilted, the signal indicator on the module is on, and when the module is placed in parallel, the signal indicator on the module is off.

The STM32 examples are based on the STM32F103RBT6 and the STM32H743. The connection provided below is based on the STM32F103RB. If you need to use other STM32 boards, you may need to change the hardware connection and port the code yourself.

STM32

Hardware Connection

Sensor	STM32	Description
VCC	3.3V	Power input
GND	GND	Power ground
DOUT	PA4	Digital output

Examples

The demo is developed based on the HAL library. Please download the program inside the material, find the STM32 program file directory, open the Tilt-Sensor-code\STM32\STM32F103RB\MDK-ARM directory of Tilt Sensor.uvprojx, and you can see the program.

Open main.c and recompile to download.

• After downloading, run SSCOM to connect the Tilt module, and you can see the sensor status.

When shake or tilt the module, the signal indicator on the module is on. When placing the module, the signal indicator on the module is off. The Arduino example is written for the Arduino UNO. If you want to connect it to other Arduino boards, you may need to change the connection.

Arduino

Hardware connection

Sensor	Arduino	Description
VCC	5V	Power input
GND	GND	Power ground
DOUT	D2	Digital output

Examples

• Download the demo codes to your PC and unzip.
• Install the Arduino IDE on your PC.
• Go into Tilt-Sensor-code/Arduino/Tilt_Senso.
• Run the Tilt_Sensor.ino file.
• Select the correct Board and the Port.

• Build the project and upload it to the board.
• Open the serial monitor of the Arduino IDE or the SSCOM software and check the serial data.

Resources

• User Manual
• Schematic
• Demo Code
• Software

FAQ

Question:How does the tilt sensor work?

 Answer:

This vibrating sensor is essentially an application of mercury switch. In a condition of vibrating or tilting, the sensor may enable the switch to close or loose.

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Question:What other choices do I have?

 Answer:

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