Arduino Servo Library Test

By -
Servo Test

RC Servo for steering RC cars

In RC cars, It's already integrated with RC Servo that can move from 0 to 180 degrees. But actually it can move from 45 to 120 degrees for steering the angle is fix by gears.

Sample code:
#include <Servo.h>
#define mins 45 //degree
#define maxs 120 //degree
#define center 83 //degree
//Maximum speed for turn steering 10ms
Servo myservo;
int angle = center;
bool left = true;

void setup() {
  // put your setup code here, to run once:
  myservo.attach(9);
}

void loop() {
  // put your main code here, to run repeatedly:
  myservo.write(angle);
  if(left){
    angle--;
  }else{
    angle++;
  }
  if(angle == mins){
    left = false;
  }
  if(angle == maxs){
    left = true;
  }
  delay(15);
}

This code will move the servo continuous from left to right and right to left by the limit angle of steering.

Reference: Arduino Servo

Comments

Post a Comment

Popular posts from this blog

SRF10

By -
Image
SRF10 Ultrasonic sensors SRF10 connector description This module used I2C as a protocol to communication with MCU. This module support to use with more than one module in system up to 16 module. We can set ID address for each module before integrated to the system, About how to change ID address click here . For distance to measure this module can measure from 6 cm to 6 m. Sample code: #include <Wire.h> //For Ultrasonic //ADDRESS #define Front_Left 112 #define Front_Right 114 #define CMD 0x00 #define Read_inch 0x50 #define Read_cen 0x51 #define Read_micro_sec 0x52 #define Read_pointer 0x02 void setup() { // put your setup code here, to run once: Serial.begin(115200); Wire.begin(); } void loop() { // put your main code here, to run repeatedly: //Correct Data Serial.println("----"); read_distance_ultrasonic(Front_Left); delay(75); read_distance_ultrasonic(Front_Right); delay(75); } int read_distance_ultrasonic(int addr){ i...
Keep reading

Sharp 2Y0A21 F 03

By -
Image
Sharp 2Y0A21 F 03 Distance Measuring Sensor Unit Sharp 2Y0A21 F 03 This sensor can measure a distance from 10 to 80 cm with analog output. The range of output voltage is defined as a graph below. Voltage output from 0.4 to 2.25 V (80 to 10 cm) Sample Code: void setup() { // put your setup code here, to run once: pinMode(A6, INPUT); pinMode(A7, INPUT); Serial.begin(115200); } void loop() { // put your main code here, to run repeatedly: Serial.println(analogRead(A6)); delay(1); Serial.println(analogRead(A7)); delay(1000); } Because the output of this sensor in analog output, So we can read data easily by using ADC. (analogRead() function in arduino) In this code, we read from 2 sharp sensors and print output to a serial port. Reference:  Datasheet
Keep reading

Flow Chart

By -
Image
Flow Chart: Self Drifting Cars Self Drifting Cars Flow Chart  Self Drifting Cars Flow Chart as shown in figure above, start with analog infrared sensor to detect distance in front direction of the cars, accelerometer received acceleration of the cars, ultrasonic sensor received distance between the cars and the wall to calculate offset angle by using PID controller to steering car direction and to avoid collision from the wall, then we can limit speed of the cars by using HAL-sensor with PID controller then send command to steering and speeding the cars and then the cars send back about current data to raspberry pi
Keep reading