Other Arduino Codes and Videos by Robojax
In this video we learn how to use VL53L0X Time-of-Flight (ToF) 4000mm laser range sensor to measure distance and display it on LCD1602 wiht I2C or LCD2004 with I2C
/*
Library used: http://librarymanager/All#SparkFun_VL53L1X
* This Arduin sketch display distnace using VL53L1X distance sensor on LCD1602 or LCD2004 with I2C module (4 wires)
*
The distance is can be selected to ba in "mm", "inches", "feet", "cm" and "meter"
*
* Watch Video instrution for this code:https://youtu.be/Lt-Zhm_XY38
*
This sketch needs to libraries, libray for VL53L1X and librarey for LCD1602 with I2C
* Written by Ahmad Shamshiri on Jun 18, 2020 in Ajax, Ontario, Canada
* in Ajax, Ontario, Canada. www.robojax.com
*
* Get this code and other Arduino codes from Robojax.com
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* * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.*
* This code has been download from Robojax.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
VL53L1X distance reading from Sparkfun https://github.com/sparkfun/SparkFun_VL53L1X_Arduino_Library
* Reading distance from the laser based VL53L1X
By: Nathan Seidle
Revised by: Andy England
SparkFun Electronics
Date: April 4th, 2018
*/
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
// Set the LCD address to 0x27 for a 16 chars and 2 line display
const uint8_t I2C_ADDRESS =0x27;
const uint8_t LCD_CHAR= 16;
const uint8_t LCD_ROW= 2;
LiquidCrystal_I2C lcd(I2C_ADDRESS, LCD_CHAR,LCD_ROW);
#include "SparkFun_VL53L1X.h" //Click here to get the library: http://librarymanager/All#SparkFun_VL53L1X
//Optional interrupt and shutdown pins.
#define SHUTDOWN_PIN 2
#define INTERRUPT_PIN 3
SFEVL53L1X distanceSensor;
//Uncomment the following line to use the optional shutdown and interrupt pins.
//SFEVL53L1X distanceSensor(Wire, SHUTDOWN_PIN, INTERRUPT_PIN);
int distance=0;
void setup()
{
Wire.begin();
lcd.begin();
// Turn on the blacklight and print a message.
lcd.backlight();
if (distanceSensor.begin() != 0) //Begin returns 0 on a good init
{
lcd.print("Sensor failed");
lcd.setCursor(0,1);
lcd.print("check wiring!");
while (1)
;
}
//distanceSensor.setDistanceModeShort();
distanceSensor.setDistanceModeLong();
lcd.print("Robojax VL53L1X");
lcd.setCursor(0,1);
lcd.print("Mode: Medium");
//lcd.print("Mode: Long");
delay(2000);
clearCharacters(LCD_ROW-1,0, LCD_CHAR-1);
lcd.setCursor(0,1);
lcd.print("Distance: ");
}//setup() end
void loop()
{
getDistance();
printDistance('m');
// if distance is greator thatn 185mm do something
if(distance >185)
{
// somethig here
}
delay(300);
}
/*
* getDistance()
* displays gets the distance for VL53L1X laser sensor
* updates the "distance" variable with distance in mm
*
*/
int getDistance()
{
distanceSensor.startRanging(); //Write configuration bytes to initiate measurement
while (!distanceSensor.checkForDataReady())
{
delay(1);
}
distance = distanceSensor.getDistance(); //Get the result of the measurement from the sensor
distanceSensor.clearInterrupt();
distanceSensor.stopRanging();
}//getDistance() end
/*
* printDistance(char unit)
* displays value and title on LCD1602
* How to use:
* printDistance('m');
*/
void printDistance(char unit)
{
// Robojax.com LCD1602 for VL53L1X d
float distanceInches = distance * 0.0393701;
float distanceFeet = distanceInches / 12.0;
float distanceMeter = distance/1000.00;
float distanceCm= distance/10.00;
clearCharacters(1,9, LCD_CHAR-1 );
lcd.setCursor (9,1); //
if(unit =='i')
{
lcd.print(distanceInches);
lcd.print("in");
}
if(unit =='m')
{
lcd.print(distance);
lcd.print("mm");
}
if(unit =='f')
{
lcd.print(distanceFeet);
lcd.print("ft");
}
if(unit =='c')
{
lcd.print(distanceCm);
lcd.print("cm");
}
if(unit =='a')
{
lcd.print(distanceMeter);
lcd.print("m");
}
// Robojax.com LCD1602 for LM35 Demo
}
/*
clearCharacters(uint8_t row,uint8_t start, uint8_t stop)
* @brief clears a line of display (erases all characters)
* @param none
* @return does not return anything
* Written by Ahmad Shamshiri
* www.Robojax.com code May 28, 2020 at 16:21 in Ajax, Ontario, Canada
*/
void clearCharacters(uint8_t row,uint8_t start, uint8_t stop )
{
for (int i=start; i<=stop; i++)
{
lcd.setCursor (i,row); //
lcd.write(254);
}
}//clearCharacters
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