Difference between revisions of "Sensor-Crash"

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{| style="width: 800px;"
+
{{Language|Sensor-Crash Sensor}}
|-
+
{| style="width: 80%;"
|[[File: Microduino Crash-rect-v1.jpg|300px|left]] ||
 
::<p style="color: #000000;font-size:200%"><br><br><br><br><br>'''Sensor-Crash'''</p>
 
::Product serial number:'''<big style="color: #00A0A6">MSDS11</big>'''
 
|-
 
|[[File: Add-to-cart.jpg|300px|left|link=http://microduinoinc.com/products/sensors/]]||
 
::<p style="color: #000000;font-size:120%">Sensor-Crash can detect collision, and it can be used as a button switch or a limit switch.
 
</p>
 
|}
 
<br>
 
<br>
 
{| style="width: 800px;"
 
 
|-
 
|-
 
|
 
|
<p style="color: #333333;font-size:155%">'''Technical Specifications'''</p>
+
[[File: Microduino Crash-rect.jpg|400px|thumb|right| Microduino-Crash Sensor]]
*Voltage:
+
 
**3.3V~5V working voltage
+
The product number of Sensor-Crash is: '''MSDS11'''
 +
 
 +
Sensor-Crash is a crash sensor, which is used to detect whether a crash has happened.
 +
 
 +
 
 +
 
  
*Technical parameter
+
==Introduction of Sensor Pin==
**The sensor signal '''<big style="color: #F0483C"> is HIGH before the sensor is pressed, and it changes into LOW after the sensor is pressed.</big>'''
+
{{ST_Pinout
**Usually, a mechanical switch has mechanical dither, so when using it, you’d better use program to prevent that.
+
|st_name=Crash Sensor
 +
|pin3=Digital Input
 +
}}
  
*Connection  
+
=About=
**This sensor can be connect to the following ports of Core: '''D2~D13''','''A0~A7'''
+
 
<br>
+
==Specification==
----
+
*Sensor voltage
<br>
+
**3.3V~5V working voltage
<p style="color: #333333;font-size:155%">'''Pins'''</p>
+
 
{| border="0" cellpadding="10" width="90%"
+
*Size of the sensor
 +
**Size of the board: 23.5mm*13mm
 +
**1.27mm-spacing 4Pin interface connected with sensorhub.
 +
**CAD drawing of the sensor: '''[[File:Sensor_CAD.zip]]'''
 +
 
 +
*Function description
 +
**The static signal of the sensor is HIGH. After being pressed, the signal changes into LOW.
 +
 
 +
*Connection
 +
**This sensor can be connected to the following interfaces of the core: '''D2~D13''','''A0~A7'''
 +
 
 +
==Document==
 +
*Schematic diagram:
 +
*Main sensors:
 +
 
 +
==Usage==
 +
 
 +
===Basic Functionality===
 +
The Crash Sensor is a simple Single Pole Single Throw Switch (SPST). When the sensor is not press, the electrical path through it is "open" (electrons cannot flow through it). When the sensor is pressed, the electrical path through it is "closed" (electrons can flow through it). It is an input module which produces a HIGH or LOW voltage depending if pressed or not. A Core module can read the voltage value and determine the state of the Crash Sensor.
 +
{| class="wikitable"
 +
|+Crash Sensor State Table
 +
|-
 +
! State
 +
! Voltage Level
 +
|-
 +
|Sensor is not pressed
 +
|HIGH
 
|-
 
|-
|width="35%" valign="center" align="left"|
+
|Sensor is pressed
*IN'''<big style="color: #00A0A6">(Digital signal)</big>'''
+
|LOW
**PIN1: GND
 
**PIN2: VCC
 
**PIN3: Digital signal input
 
**PIN4: NC(empty)
 
|width="35%" valign="top" align="center"|
 
[[file: Sensor_backpin.png|130px|center]]
 
|width="25%" valign="top" align="center"|
 
 
|}
 
|}
<br>
 
----
 
<br>
 
<p style="color: #333333;font-size:135%">'''Programming Manual'''</p>
 
You can learn about Arduino IDE programming to control modules, referring to [[AVR Core: Getting Started |Getting Started]].
 
<p style="color: #333333;font-size:120%">'''Common usage'''</p>
 
The signal of Crash can be read directly with [[digitalRead()]]: high (1, true) or low (0, false).
 
<source lang="cpp">
 
#define PIN_KEY 4  //The key is connected to pin 4. 
 
  
void setup() {
+
===Programming===
   Serial.begin(9600); //Set the baud rate of serial communication.
+
<tab name="Arduino for Microduino" style="width:100%;">
   pinMode(PIN_KEY, INPUT);//Set the input state of the key.
+
==Introduction==
 +
The Crash Sensor is used as a simple input pin. Therefore, the '''pinMode''' and '''digitalRead''' functions will be used.
 +
==Key Functions==
 +
*Required Libraries: None
 +
*Key Functions:
 +
** '''pinMode(pin_number, pin_mode)''' - sets the mode for the pin
 +
***'''pin_number''' - is the pin number that the sensor is connected to
 +
***'''pin_mode''' - is the mode to set the pin to. Either '''INPUT''' or '''OUTPUT'''
 +
** '''digitalRead(pin_number)''' - Reads the value of the pin
 +
***'''pin_number''' - is the pin number that the sensor is connected to
 +
 
 +
==Example==
 +
This is a simple example which outputs the state of the Crash Sensor to the serial port terminal.
 +
 
 +
'''Note''': Important lines of code are highlighted.
 +
 
 +
<syntaxhighlight lang="cpp" highlight="1,2,10,11,17,18">
 +
//Define the pin the sensor is connected to
 +
const int CRASH_SENSOR_PIN = 6;
 +
 
 +
void setup(){
 +
  // put your setup code here, to run once:
 +
 
 +
  //Initial serial communication port at 9600 baud
 +
   Serial.begin(9600);
 +
 
 +
  //Configure the pin into input mode
 +
   pinMode(CRASH_SENSOR_PIN, INPUT);
 
}
 
}
  
void loop() {
+
void loop(){
   if (digitalRead(PIN_KEY)//Detect the state of the key
+
   // put your main code here, to run repeatedly:
   {
+
 
     Serial.println("KEY RELEASED");//Print “KEY RELEASED” from the serial port
+
  //Perform a digital read and store the value into pin_state variable
 +
  int pin_state = digitalRead(CRASH_SENSOR_PIN);
 +
 
 +
  //Check if the sensor's state is HIGH (not pressed)
 +
   if(pin_state == HIGH){
 +
     Serial.println("Crash sensor is not pressed!");
 
   }
 
   }
   else
+
   //Check if the sensor's state is LOW (pressed)
   {
+
   else if(pin_state == LOW){
     Serial.println("KEY PRESSED");// Print “KEY PRESSED” from the serial port.
+
     Serial.println("Crash sensor is pressed!");
 
   }
 
   }
 +
  else{}
 +
 +
  //delay 100ms between loops
 +
  delay(100);
 
}
 
}
</source>
+
</syntaxhighlight>
<p style="color: #333333;font-size:120%">'''Advanced Usage'''</p>
+
Copy and paste the code above to the Arduino IDE or
[_07_m_Sensor_Key] libraries reference page provides the completed details and samples of how to use Crash sensor.  
+
 
*<p style="font-size:125%">Libraries Syntax Manual</p>[[Sensor_Key_Reference]]
+
Download the above example: n/a
 +
 
 +
*Open the Serial Monitor (magnifier glass on top right) and set 9600 baud. This will display the serial output.
 +
</tab>
 +
 
 +
===Program Download===
 +
*Download and unzip the program '''[[File:Sensor_Crash_Test.zip]]'''
 +
*Or create a new sketch and copy & paste this code: '''https://gist.github.com/anonymous/d714e491f22fda1c42dd78f9e92b5eb4'''
 +
 
 +
===Programming===
 +
{{Upload
 +
|nameA=[[Microduino-Core]], [[Microduino-USBTTL]]
 +
|nameB=[[Microduino-USBTTL]]
 +
|boardName=Microduino/mCookie-Core(328p), Atmega328P@16M,5V
 +
|fileName=CrashTest.ino
 +
}}
 +
 
 +
===Hardware Setup===
 +
*Referring to the following diagram, connect the Sensor-Crash to digital port D6 of '''[[Microduino-Sensorhub]]'''.
 
<br>
 
<br>
[[file: Sensor_Key-idecode.JPG|400px|center]]
+
[[file:Microduino-sensorhub_Crash.JPG|thumb|400px|left]]
<br>
+
<br style="clear: left"/>
----
+
 
<br>
+
===Result===
<p style="color: #333333;font-size:135%">'''Documentation'''</p>
+
*After download, open the serial monitor.
*CAD drawing of the sensor: '''[[File:Sensor_CAD.zip]]'''
+
*The static sensor signal is HIGH. After being pressed, it changes into LOW.
*Download libraries from GitLab: [https://git.microduino.cn/hardware/libraries/tree/master/_07_m_Sensor_Key _07_m_Sensor_Key Library download]
+
 
<br>
+
==Application==
----
+
*Key switch
<br>
+
*Limit switch
<p style="color: #333333;font-size:135%">'''Relative Tutorials'''</p>
+
 
*[[Short press and long press of switches]]
+
===Projects===
*[[Switches' states and actions]]
 
<br>
 
----
 
<br>
 
<p style="color: #333333;font-size:135%">'''Q&A'''</p>
 
*Why does it seem that the results of being pressed and being released are reverse?
 
**Because the signal is HIGH before Sensor-Crash is pressed, and after it is pressed, the signal changes into LOW.  
 
  
 +
==History==
  
<br>
+
==Gallery==
<br>
 
----
 
<br>
 
<p style="color: #333333;font-size:135%">'''History'''</p>
 
*The latest version was updated with a [[Sensor_Key_Reference]] instructions of libraries.
 
*[https://wiki.microduino.cn/index.php?title=Sensor-Temperature-D1/zh&oldid=20510 2017/6/1]
 
<br>
 
<br>
 
----
 
<br>
 
<p style="color: #333333;font-size:135%">'''Gallery'''</p>
 
 
{| border="0" cellpadding="10" width="100%"
 
{| border="0" cellpadding="10" width="100%"
 
|-
 
|-
 
|width="50%" valign="top" align="left"|
 
|width="50%" valign="top" align="left"|
[[file: MicroduinoCrash-F.JPG|250px|center]]
+
[[file: MicroduinoCrash-F.JPG|thumb|480px|center|mCookie-Crash-Front]]
 
|width="50%" valign="top" align="left"|
 
|width="50%" valign="top" align="left"|
[[file: Microduino-Crash-b.JPG|250px|center]]
+
[[file: Microduino-Crash-b.JPG|thumb|480px|center|mCookie-Crash-Back]]
 
|}
 
|}
 
|}
 
|}
<br>
 
<p style="font-size:125%">[[MCookie Sensor Serials|Return to Sensor Page]]</p>
 

Latest revision as of 20:30, 1 December 2017

Language: English  • 中文
Microduino-Crash Sensor

The product number of Sensor-Crash is: MSDS11

Sensor-Crash is a crash sensor, which is used to detect whether a crash has happened.



Introduction of Sensor Pin

Sensor backpin.png

Crash Sensor
General Pin Out Sensor / Trinket's Pin Out
PIN1 (GND) GND
PIN2 (VCC) VCC
PIN3 (SIGNAL-A) Digital Input
PIN4 (SIGNAL-B) Not Connected
  • General Pin Out is the standard pin out of a Sensor / Trinket connector.
  • Sensor / Trinket's Pin Out is this specific Sensor / Trinket's wiring in relation to the General Pin Out.
  • SIGNAL-A / SIGNAL-B are signals that could be digital input, digital output, analog input or analog output. Or special signals such as serial communication (SoftwareSerial, IIC (I2C), etc) or other special signals.
  • Not Connected refers to the Pin not being used for this particular Sensor / Trinket.
  • Read more about the hub module.

About

Specification

  • Sensor voltage
    • 3.3V~5V working voltage
  • Size of the sensor
    • Size of the board: 23.5mm*13mm
    • 1.27mm-spacing 4Pin interface connected with sensorhub.
    • CAD drawing of the sensor: File:Sensor CAD.zip
  • Function description
    • The static signal of the sensor is HIGH. After being pressed, the signal changes into LOW.
  • Connection
    • This sensor can be connected to the following interfaces of the core: D2~D13,A0~A7

Document

  • Schematic diagram:
  • Main sensors:

Usage

Basic Functionality

The Crash Sensor is a simple Single Pole Single Throw Switch (SPST). When the sensor is not press, the electrical path through it is "open" (electrons cannot flow through it). When the sensor is pressed, the electrical path through it is "closed" (electrons can flow through it). It is an input module which produces a HIGH or LOW voltage depending if pressed or not. A Core module can read the voltage value and determine the state of the Crash Sensor.

Crash Sensor State Table
State Voltage Level
Sensor is not pressed HIGH
Sensor is pressed LOW

Programming

Introduction

The Crash Sensor is used as a simple input pin. Therefore, the pinMode and digitalRead functions will be used.

Key Functions

  • Required Libraries: None
  • Key Functions:
    • pinMode(pin_number, pin_mode) - sets the mode for the pin
      • pin_number - is the pin number that the sensor is connected to
      • pin_mode - is the mode to set the pin to. Either INPUT or OUTPUT
    • digitalRead(pin_number) - Reads the value of the pin
      • pin_number - is the pin number that the sensor is connected to

Example

This is a simple example which outputs the state of the Crash Sensor to the serial port terminal.

Note: Important lines of code are highlighted.

//Define the pin the sensor is connected to
const int CRASH_SENSOR_PIN = 6;

void setup(){
  // put your setup code here, to run once:

  //Initial serial communication port at 9600 baud
  Serial.begin(9600);

  //Configure the pin into input mode
  pinMode(CRASH_SENSOR_PIN, INPUT);
}

void loop(){
  // put your main code here, to run repeatedly:

  //Perform a digital read and store the value into pin_state variable
  int pin_state = digitalRead(CRASH_SENSOR_PIN);

  //Check if the sensor's state is HIGH (not pressed)
  if(pin_state == HIGH){
    Serial.println("Crash sensor is not pressed!");
  }
  //Check if the sensor's state is LOW (pressed)
  else if(pin_state == LOW){
    Serial.println("Crash sensor is pressed!");
  }
  else{}

  //delay 100ms between loops
  delay(100);
}

Copy and paste the code above to the Arduino IDE or

Download the above example: n/a

  • Open the Serial Monitor (magnifier glass on top right) and set 9600 baud. This will display the serial output.

Program Download

Programming

  • Follow the Software Getting Started Guide.
  • Select the Board, Processor and Port.
  • Click [File]->[Open], browse to the project program address, and click "CrashTest.ino" to open the program.
  • After confirming all these items are correct, click "→" to download the program to the development board.

Hardware Setup

  • Referring to the following diagram, connect the Sensor-Crash to digital port D6 of Microduino-Sensorhub.


Microduino-sensorhub Crash.JPG


Result

  • After download, open the serial monitor.
  • The static sensor signal is HIGH. After being pressed, it changes into LOW.

Application

  • Key switch
  • Limit switch

Projects

History

Gallery

File:MicroduinoCrash-F.JPG
mCookie-Crash-Front
File:Microduino-Crash-b.JPG
mCookie-Crash-Back
Retrieved from "https://wiki.microduinoinc.com/index.php?title=Sensor-Crash&oldid=21717"