Kutumia Mita ya Umbali wa Laser ya VL53L0X na Arduino

Kutumia Mita ya Umbali wa Laser ya VL53L0X na Arduino

Katika somo hili, tutachunguza jinsi ya kutumia mita ya umbali wa laser ya VL53L0X na Arduino. Kifaa hiki hukuruhusu kupima umbali kwa usahihi kwa kutumia laser, na kuifanya kuwa bora kwa matumizi mbalimbali kama vile roboti na otomatiki. Mwisho wa mafunzo haya, utakuwa na usanidi wa kazi ambao unaweza kupima umbali na kuzionyesha kwenye mfuatiliaji wa serial.

Kwa mradi wetu, tutakuwa tukitumia maktaba ya VL53L0X ya Adafruit, ambayo hurahisisha mchakato wa kuingiliana na sensor. Maktaba hii hutoa kazi zinazohitajika ili kuanzisha sensorer, kusoma vipimo, na kushughulikia makosa yoyote ambayo yanaweza kutokea. Unaweza kurejelea video kwa mwongozo wa kuona kwenye usanidi (kwenye video saa 02:15).

Vifaa vimeelezewa

Sehemu kuu za mradi huu ni pamoja na mita ya umbali wa laser ya VL53L0X na bodi ya Arduino. VL53L0X ni sensor ya wakati wa kukimbia ambayo hutumia laser kupima umbali hadi mita 2 kwa usahihi wa hali ya juu. Inafanya kazi kupitia itifaki ya I2C, ikiruhusu mawasiliano rahisi na Arduino.

Bodi ya Arduino hutumika kama microcontroller ambayo inasindika data kutoka kwa VL53L0X. Inatuma amri kwa sensor na kupokea vipimo vya umbali, ambavyo vinaweza kuonyeshwa au kutumika katika programu zingine. Wiring sahihi ni muhimu kwa kuhakikisha usomaji sahihi kutoka kwa sensor.

Maelezo ya Karatasi ya Data

• Hakikisha sensor inaendeshwa kwa usahihi (2.6 V hadi 3.5 V).
• Dumisha mipangilio sahihi ya anwani ya I2C ili kuepuka migogoro.
• Weka sensor safi kwa vipimo sahihi vya umbali.
• Tumia vipingamizi vinavyofaa vya kuvuta kwenye mistari ya I2C ikiwa inahitajika.
• Epuka jua moja kwa moja kwenye sensor kwa usomaji wa kuaminika.

Maelekezo ya Wiring

Ili kuunganisha sensor ya VL53L0X kwa Arduino, unganisha pini ya VCC ya sensor kwenye pini ya 5V kwenye Arduino. Pini ya GND inapaswa kushikamana na ardhi (GND) ya Arduino. Kwa mawasiliano ya I2C, unganisha pini ya SDA ya VL53L0X kwa pini ya A4 kwenye Arduino, na uunganishe pini ya SCL kwenye pini ya A5. Ikiwa unatumia muundo tofauti wa Arduino, rejelea kazi maalum za pini za SDA na SCL kwa bodi hiyo.

Kwa mfano, kwenye Arduino Mega, ungeunganisha SDA kwa pini 20 na SCL kwa pini 21. Hakikisha kwamba miunganisho yote ni salama ili kuepuka masuala ya mawasiliano. Ikiwa sensor haijibu, angalia mara mbili wiring na uhakikishe kuwa Arduino inaendeshwa vizuri.

Mifano ya Msimbo na Matembezi

Ifuatayo ni kijisehemu kutoka kwa kazi ya usanidi ambayo huanzisha sensor ya VL53L0X:

void setup() {
  Serial.begin(9600);
  while (! Serial) {
    delay(1);
  }
  Serial.println("Robojax Test");
  if (!lox.begin()) {
    Serial.println(F("Failed to boot VL53L0X"));
    while(1);
  }
}

Msimbo huu huanzisha mawasiliano ya serial na kujaribu kuanza sensor ya VL53L0X. Ikiwa sensor inashindwa kuwasha, itachapisha ujumbe wa makosa na kusimamisha programu.

Ifuatayo, hapa kuna kijisehemu kutoka kwa kazi ya kitanzi ambayo inasoma kipimo cha umbali:

void loop() {
  VL53L0X_RangingMeasurementData_t measure;
  lox.rangingTest(&measure, false);
  if (measure.RangeStatus != 4) {
    Serial.print("Distance (mm): "); Serial.println(measure.RangeMilliMeter);
  } else {
    Serial.println(" out of range ");
  }
  delay(100);
}

Kizuizi hiki kinaendelea kusoma kipimo cha umbali kutoka kwa sensor na kuichapisha kwa mfuatiliaji wa serial. Ikiwa kipimo kiko nje ya anuwai, inaonyesha hii ipasavyo.

Maonyesho / Nini cha Kutarajia

Unapoendesha programu, unapaswa kuona vipimo vya umbali vinavyoonyeshwa kwenye mfuatiliaji wa serial. Usomaji unapaswa kusasisha kila milisekunde 100. Ikiwa sensor inaelekeza kwenye kitu, itaonyesha umbali kwa milimita. Ikiwa kitu kiko nje ya anuwai, itaonyesha hiyo pia. Hakikisha umejaribu sensor ndani ya masafa yake maalum kwa matokeo bora (kwenye video saa 10:00).

Mihuri ya Muda wa Video

• 00:00-Utangulizi
• 02:15- Usanidi wa wiring
• 05:30- Maelezo ya nambari
• 10:00-Maandamano

Bilder

VL53L0X 200cm range sensor-blue

Arduino Wiring for VL53L0X

VL53L0X 200cm range sensor-blue

Arduino Wiring for VL53L0X

/* This example shows how to use continuous mode to take
range measurements with the VL53L0X.
// Original source from Adafruit https://github.com/adafruit/Adafruit_VL53L0X
// Modified by Ahmad Shamshiri for RoboJax.com
// Date modified: Sep 26, 2017
// Nejrabi

* Get this code and other Arduino codes from Robojax.com
Learn Arduino step by step in a structured course with all material, wiring diagrams, and libraries
all in one place. 

If you found this tutorial helpful, please support me so I can continue creating 
content like this. 

or make a donation using PayPal http://robojax.com/L/?id=64

 *  * 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 downloaded 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/>.

   Copyright (c) 2015, Majenko Technologies
   All rights reserved.

   Redistribution and use in source and binary forms, with or without modification,
   are permitted provided that the following conditions are met:

 * * Redistributions of source code must retain the above copyright notice, this
     list of conditions and the following disclaimer.

 * * Redistributions in binary form must reproduce the above copyright notice, this
     list of conditions and the following disclaimer in the documentation and/or
     other materials provided with the distribution.

 * * Neither the name of Majenko Technologies nor the names of its
     contributors may be used to endorse or promote products derived from
     this software without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
   ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
   ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include "Adafruit_VL53L0X.h"

Adafruit_VL53L0X lox = Adafruit_VL53L0X();

void setup() {
  Serial.begin(9600);

  // wait until serial port opens for native USB devices
  while (! Serial) {
    delay(1);
  }
  
  Serial.println("Robojax Test");
  if (!lox.begin()) {
    Serial.println(F("Failed to boot VL53L0X"));
    while(1);
  }
  // power 
  Serial.println(F("VL53L0X API Simple Ranging example\n\n")); 
}


void loop() {
  VL53L0X_RangingMeasurementData_t measure;
    
  Serial.print("Reading a measurement... ");
  lox.rangingTest(&measure, false); // pass in 'true' to get debug data printout!

  if (measure.RangeStatus != 4) {  // phase failures have incorrect data
    Serial.print("Distance (mm): "); Serial.println(measure.RangeMilliMeter);
  } else {
    Serial.println(" out of range ");
  }
    
  delay(100);
}