Gab_S
5 years ago
1 changed files with 0 additions and 151 deletions
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//very crude libraries with objects for motor and tandrive system (2 motors no steering)
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//tandrive is an object that you attach the motor objects you make bellow made some functions
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//in hope it will be more easier to read etc.
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#include "Motorz.h"; |
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#include "tankdrive.h"; |
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#include <NewPing.h> |
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#include <DHT.h> |
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#define DHTPIN 2 // temp humidity sensor pin (why? sound speed changes according to temp/humidity)
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#define iterations 3 // can be used with function ping_median from new ping (takes median value ,unused)
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#define SONAR_L_PIN 3 //left sonar sensor 3 pin configuration (trig&echo) are bound to 1 pin
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#define SONAR_M_PIN 4 // middle sonar sensor
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#define SONAR_R_PIN 5 // right sonar sensor
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#define MAX_DISTANCE 400 //max sonar dinstance according to the type of sensor i use Hc-SR04
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NewPing sonarL(SONAR_L_PIN,SONAR_L_PIN, MAX_DISTANCE); |
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NewPing sonarM(SONAR_M_PIN,SONAR_M_PIN, MAX_DISTANCE); |
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NewPing sonarR(SONAR_R_PIN,SONAR_R_PIN, MAX_DISTANCE); |
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DHT dht(DHTPIN, DHT11); |
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float soundcm; |
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float temp=20.0; |
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float hum=50.0; |
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float duration; |
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//calculating speed of sound uses floats and multiplications we don't want to bog down
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// our already slow and weak cpu so i use a the variables bellow along with function millis()
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// to take measurments every half minute (still too often in my opinion)
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// (also you can't get readings more often than 2 seconds from this sensor)
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unsigned long temp_startcnt; |
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unsigned long temp_currcnt; |
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int i; |
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int dist[3]; //table that holds the distances the sensors measured
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//using an L298N motor driver module
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int enr=10; // enable pin for motor r (must be pwm)
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int in1=11; // pin for one of the two connections of the mottor
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int in2=12;// other connection (these two are digital pins)
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// depends on how you end up wiring and placing the motors it will spin a certain way
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// and another way when you reverse the voltage , direct holds (0,1) depending on how you
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// wired the motor to go "forwards" what ever that means for your project
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int directr=1; |
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int enl=9; |
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int in3=7; |
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int in4=8; |
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int directl=0; |
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Motorz motorR(enr,in1,in2,directr); |
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Motorz motorL(enl,in3,in4,directl); |
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TankDrive mytank(&motorR,directr,&motorL,directl); |
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void setup(){ |
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temp_startcnt=millis(); //temp&humidity counter
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dht.begin(); //it needs this
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Serial.begin(115200); //serial monitor for debugging
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Serial.println("Setup"); |
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motorR.SetSpeed(200); //im using diffrent motors (trying to simulate wheels so i figure things out )
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motorL.SetSpeed(60); // so that explains the diffrent speed in each motor
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soundcm = 331.4 + (0.606 * temp) + (0.0124 * hum) ; |
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soundcm=soundcm/10000; //speed of sound per cm
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} |
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void loop() |
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{ |
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temp_currcnt=millis(); |
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if((temp_currcnt-temp_startcnt)>=30000){ |
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GetTemps(); |
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Serial.println(); |
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Serial.println(); |
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Serial.print("temps aquaried "); |
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Serial.print(millis()); |
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Serial.println(); |
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Serial.println(); |
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} |
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//for now it only detects things from the front sensor but
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// with only few lines and ifs you can make it better
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// moves forward until there's something 5cm in front of it
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// carefull this sonar sensors aren't that accurate in < 6 cm distances in my opinion
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GetDistances(); |
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if(dist[1]>5){ |
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Serial.print("Moving forward\n"); |
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mytank.MoveForward(); |
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} |
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else{ |
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Serial.print("Object detected\n"); |
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mytank.Stop(); |
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} |
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/*
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mytank.MoveForward(); |
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delay(5000); |
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mytank.Stop(); |
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delay(2000); |
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mytank.TurnRight(); |
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delay(5000); |
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mytank.Stop(); |
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delay(2000); |
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mytank.MoveBack(); |
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delay(5000); |
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mytank.Stop(); |
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delay(2000); |
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*/ |
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} |
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void GetDistances(){ |
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/*duration = sonarL.ping_median(iterations);
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dist[0]=(duration / 2) * soundcm; |
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duration = sonarM.ping_median(iterations); |
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dist[1]=(duration / 2) * soundcm; |
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duration = sonarR.ping_median(iterations); |
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dist[2]=(duration / 2) * soundcm; */ |
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duration = sonarL.ping(); //sending supersonic sound wave and measuring the time it takes to come back
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dist[0]=(duration / 2) * soundcm; // devide by 2 (hit object came back ) and multiply by speed of sound
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delay(100); //the delay is crusial since we're firing one sensor after another
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duration = sonarM.ping(); //we don't want noise from one sonar waver of one sensors affecting another
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dist[1]=(duration / 2) * soundcm; |
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delay(100); |
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duration = sonarR.ping(); / |
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dist[2]=(duration / 2) * soundcm; |
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delay(100); |
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Serial.print("Distance L:"); |
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Serial.print(dist[0]); |
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Serial.print(" M:"); |
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Serial.print(dist[1]); |
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Serial.print(" R:"); |
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Serial.print(dist[2]); |
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Serial.print(" Temp:"); |
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Serial.print(temp); |
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Serial.print(" Humidity:"); |
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Serial.print(hum); |
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Serial.println(); |
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} |
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void GetTemps(){ |
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hum = dht.readHumidity(); // Get Humidity value
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temp= dht.readTemperature(); // Get Temp value
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temp_startcnt=temp_currcnt; |
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soundcm = 331.4 + (0.606 * temp) + (0.0124 * hum) ; |
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soundcm=soundcm/10000; //speed of sound per cm
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} |
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