Difference between revisions of "Sensor-Crash"

Sensor-Crash

Product serial number:MSDS11

Sensor-Crash can detect collision, and it can be used as a button switch or a limit switch.

Technical Specifications

• Voltage:
  • 3.3V~5V working voltage

• Technical parameter
  • The sensor signal is HIGH before the sensor is pressed, and it changes into LOW after the sensor is pressed.
  • Usually, a mechanical switch has mechanical dither, so when using it, you’d better use program to prevent that.

• Connection
  • This sensor can be connect to the following ports of Core: D2~D13,A0~A7

Pins

IN(Digital signal) PIN1: GND PIN2: VCC PIN3: Digital signal input PIN4: NC(empty)

Programming Manual

You can learn about Arduino IDE programming to control modules, referring to Getting Started.

Common usage

The signal of Crash can be read directly with digitalRead(): high (1, true) or low (0, false).

#define PIN_KEY 4   //The key is connected to pin 4.  

void setup() {
  Serial.begin(9600);  //Set the baud rate of serial communication. 
  pinMode(PIN_KEY, INPUT);//Set the input state of the key.
}

void loop() {
  if (digitalRead(PIN_KEY))  //Detect the state of the key 
  {
    Serial.println("KEY RELEASED");//Print “KEY RELEASED” from the serial port
  }
  else
  {
    Serial.println("KEY PRESSED");// Print “KEY PRESSED” from the serial port. 
  }
}

Advanced Usage

[_07_m_Sensor_Key] libraries reference page provides the completed details and samples of how to use Crash sensor.

• Libraries Syntax Manual

  Sensor_Key_Reference

Documentation

• CAD drawing of the sensor: File:Sensor CAD.zip
• Download libraries from GitLab: _07_m_Sensor_Key Library download

Relative Tutorials

• Short press and long press of switches
• Switches' states and actions

Q&A

• 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

• The latest version was updated with a Sensor_Key_Reference instructions of libraries.
• 2017/6/1

Gallery