Personal – Imthiaz Blog

HDR fun in Koothanallur

February 4, 2017
Imthiaz
Personal

Some clicks from Koothanallur from last vacation…

Been busy and Lazy in Year 2016

December 22, 2016
Imthiaz
Personal

Hey Bloggy

Just now I realised that it has been nearly a year now since I blogged. I have been so lazy and busy off-roading on weekend and really didn’t find time to blog. I feel really bad that one year has fully gone without blogging. Inshallah I will make sure that I will start blogging regularly from now on.

This my new beast which keeps me busy during the weekend..

And now I have big second family 🙂

I hope everyone I knew had a great and wonderful year 2016 and I wish everyone a very happy and successful new year 2017..

sayonara..

Blog Update Year 2014

January 18, 2015
Imthiaz
Personal

For really long time I have not updated the blog, mostly I been busy with other activities and really lazy. There were not much updates this year as I was majorly focusing with the new job and responsibilities.

I have few updates coming soon related to OBD port, photography and electronics stuff. This update is just to break the silence. Below is a picture of my cat “Pixel”

4WD Robotic Car controlled over Bluetooth with iPhone App

December 11, 2013
Imthiaz
Personal

After massive brain damage I finally managed to build a prototype 4WD Robotic car controlled over Bluetooth using iPhone app. This was done using serial communication between Arduino mega and Hercules motor driver. Sorry for not posting detailed pinout diagram. If anyone interested in detailed connections please drop me an email or comment. The real trick was to make the serial connections work and test without connecting the USB cable on Hercules. Hercules board should have had two serial communication pins for easy testing as it was pain to keep removing the connected Arduino serial connections for testing. Anyways its done now 😉

Parts used in this demo

You can download the source code used in this project “CarRemote” in Github. Please forgive my bad C code as it been real long time.

4WD Robotic Car with 15 Kilo Load Test

December 8, 2013
Imthiaz
Personal

Finally I put together my 4WD Robotic car. Thanks to Hercules Motor controller it’s doing what I am expecting of it. My self challenge was to make it carry 5 gallon water bottle. Few attempts failed as the motor was starting and stoping fast and the bottle was jumping out of the car. So I had to increase and reduce the speed slowly.

Parts used in this test

Source code used for this experiment 😉

// pin ctrl
#define PINCS           6           // all mos cs
#define PINM1F          4
#define PINM1R          5
#define PINM2F          7
#define PINM2R          8
#define PINPWMA         9           // PWM channel A (motor A speed)
#define PINPWMB         10          // PWM channel B (motor B speed)

int motorSpeed=0;

void setup()
{
    Serial.begin(19200);
    Serial.println("HERCULES 4WD TEST");
    pinMode(PINCS, OUTPUT);
    pinMode(PINM1F, OUTPUT);
    pinMode(PINM1R, OUTPUT);
    pinMode(PINM2F, OUTPUT);
    pinMode(PINM2R, OUTPUT);
    motorStop(100);
}

void loop()
{
  for (int i=0;i<=255;i=i+5){
    motorSetSpeed(i);
    motorForward(20); 
  }
  motorSetSpeed(255);
  motorForward(1000); 
  for (int i=255;i>=0;i=i-5){
    motorSetSpeed(i);
    motorForward(20); 
  }
  motorStop(2000);
  for (int i=0;i<=255;i=i+5){
    motorSetSpeed(i);
    motorReverse(20); 
  }
  motorSetSpeed(255);
  motorReverse(1000);
  for (int i=255;i>=0;i=i-5){
    motorSetSpeed(i);
    motorReverse(20); 
  }
  motorStop(2000); 
}

void motorSetSpeed(int power)
{
  motorSpeed=power;
  analogWrite(PINPWMA,motorSpeed);
  analogWrite(PINPWMB,motorSpeed);
}

void motorStop(int duration)
{
  digitalWrite(PINCS,LOW);
  digitalWrite(PINM1F,LOW);
  digitalWrite(PINM1R,LOW);
  digitalWrite(PINM2F,LOW);
  digitalWrite(PINM2R,LOW);
  delay(duration);
}

void motorForward(int duration)
{
   digitalWrite(PINM1F,LOW);
   digitalWrite(PINM1R,HIGH);
   digitalWrite(PINM2F,LOW);
   digitalWrite(PINM2R,HIGH);
   digitalWrite(PINCS,HIGH);
   delay(duration);
}

void motorReverse(int duration)
{
   digitalWrite(PINM1F,HIGH);
   digitalWrite(PINM1R,LOW);
   digitalWrite(PINM2F,HIGH);
   digitalWrite(PINM2R,LOW);
   digitalWrite(PINCS,HIGH);
   delay(duration);
}

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// pin ctrl

#define PINCS 6 // all mos cs

#define PINM1F 4

#define PINM1R 5

#define PINM2F 7

#define PINM2R 8

#define PINPWMA 9 // PWM channel A (motor A speed)

#define PINPWMB 10 // PWM channel B (motor B speed)

int motorSpeed=0;

void setup()

{

Serial.begin(19200);

Serial.println("HERCULES 4WD TEST");

pinMode(PINCS, OUTPUT);

pinMode(PINM1F, OUTPUT);

pinMode(PINM1R, OUTPUT);

pinMode(PINM2F, OUTPUT);

pinMode(PINM2R, OUTPUT);

motorStop(100);

}

void loop()

{

for (int i=0;i<=255;i=i+5){

motorSetSpeed(i);

motorForward(20);

}

motorSetSpeed(255);

motorForward(1000);

for (int i=255;i>=0;i=i-5){

motorSetSpeed(i);

motorForward(20);

}

motorStop(2000);

for (int i=0;i<=255;i=i+5){

motorSetSpeed(i);

motorReverse(20);

}

motorSetSpeed(255);

motorReverse(1000);

for (int i=255;i>=0;i=i-5){

motorSetSpeed(i);

motorReverse(20);

}

motorStop(2000);

}

void motorSetSpeed(int power)

{

motorSpeed=power;

analogWrite(PINPWMA,motorSpeed);

analogWrite(PINPWMB,motorSpeed);

}

void motorStop(int duration)

{

digitalWrite(PINCS,LOW);

digitalWrite(PINM1F,LOW);

digitalWrite(PINM1R,LOW);

digitalWrite(PINM2F,LOW);

digitalWrite(PINM2R,LOW);

delay(duration);

}

void motorForward(int duration)

{

digitalWrite(PINM1F,LOW);

digitalWrite(PINM1R,HIGH);

digitalWrite(PINM2F,LOW);

digitalWrite(PINM2R,HIGH);

digitalWrite(PINCS,HIGH);

delay(duration);

}

void motorReverse(int duration)

{

digitalWrite(PINM1F,HIGH);

digitalWrite(PINM1R,LOW);

digitalWrite(PINM2F,HIGH);

digitalWrite(PINM2R,LOW);

digitalWrite(PINCS,HIGH);

delay(duration);

}

Watch out for next update with remote control 😀