My DIY Projects

3D modelling and Printing a Petrochemical Plant

2019-10-06T17:47:00.001+05:00

Loh Qurani 3D Printed

2019-06-30T21:09:00.002+05:00

This time we have 3D printed Loh-Qurani for our oncoming exhibition and participation in MakerFest Lahore -2019. These will be inlayed in Carved wood panel with LEDs Backlit.

Modification in Honda Civic and Future Plan

2019-06-02T15:21:00.000+05:00

Lately, we have been 3D scanning of Honda Civic- 2018 to customize and modify some of its exterior to give it a unique but appealing look. We have been visiting the designs of High-end cars to get some ideas. Modification in such a car is not an easy task. Honda Civic is already giving a sporty look, however, an addition of following will make it much more attractive:

1- Adding Rear Spoiler - Still on my Drawing Board: 3D scanning has already been completed. Still converting the scanned data into a usable CAD model.

2- Addition of Intake Ducts: Ideas finalized but I haven't done yet the 3D scanning work...

3- Hood at Bonnet... Idea Finalized, 3D scanning after Eid. This will be the 1st modification we will perform.

4- Few minor adds-on --A lot of :P

The process will be lengthy but interesting..stay tuned:

Re-engaged in our Own World of 3D scanning

2019-05-31T03:47:00.002+05:00

Scanning live and moving objects is a challenging task.. Mostly they do a scan using photogrammetry techniques where 100s of expensive cameras are arranged in the spherical dome and triggered with microseconds delay using expensive software...These 100s of pictures are then brought into photogrammetry software for generating a mesh model......K2Lab has done the 3D Scanning of Face using structured light scanning technique of Umer Khattak...

Reverse Engineering Honda Civic 2018:

2019-05-02T11:07:00.001+05:00

The result is not bad considering the homemade 3D scanner. Three scans are stitched together and I am happy to see the results... I stopped the process .. I hope in the weekend I shall be able to 3D scan the required areas..Then the difficult process of retopology and surface extraction shall be done and later new 3D models shall be generated for the added parts....I am thinking to completely scan the car and then 3D print the scaled model..add new additional/modified parts on the scale model to take the feel of it...
The purpose is to add some external parts (CNC machined/3D printed) to make it some different look...Later, if I like the same the mold shall be made for fiberglass work...
#HondaCivic #Civic #3Dscan

Chinese Stuff ... Holy Crap...

2018-08-08T15:37:00.002+05:00

After spending 4hrs and getting blue smoke from two stepper drivers found the culprit...
Wrong tracing on PCB.. Corrected and now it's working like a charm ... my 4hrs and 10boards are saved now...
آدھی الیکٹرونکس چائنیز ھمارے سیکھنے کے لئے خراب چھوڑ دیتے ھیں...

Bladeless Fan 3D CAD Modelling, CFD and 3D Printing

2018-08-08T15:35:00.002+05:00

3D CAD Modelling , CFD and 3D printing of working prototypes of a bladeless fan.

3D printing electronic Enclosure

2018-08-08T15:32:00.001+05:00

Too many projects on drawing board and life is too short to complete all..though the pace is slow, at least, I know that I am going in the right direction..success after failures moving bit by bit.. few projects are near to completion but the Time Management is PITA.. Graphical waterfall is one of the projects took almost 4years of hard work and many rounds of testing...The testing phase has been over now and now I am working on its aesthetics... the electronics requires enclosure... 3D modelling has been done and the model is also 3D printed on my homemade 3D printer...

#3Dprinting,#robotics,#DIY,#coding,#CAD,#Tinkerer
#DoItYourself #Techies #Adruino #SocializingTechnology #MakersGonnaMake #MadeinPakistan #DIYPakistan #MakersPakistan #GraphicalWaterfall #Invent #Programming
www.robotech3D.com

Graphical Waterfall in action

2018-07-04T15:44:00.000+05:00

My 16 valve graphical waterfall prototype under testing. It takes designs from SD card. No external computer required.

3D printing ZigZag infill

2018-07-04T15:41:00.001+05:00

ZigZag infill on my home made 3D printer.

2018-07-02T08:43:00.003+05:00

3D printing the electronic enclosure.

Here is the video of 3D printing...see lovely honeycomb infill..

Graphical Waterfall Hardware and Programming

2018-06-03T14:30:00.001+05:00

Productive sunday , tinkering with graphical waterfall programming and electronics testing... Too many versions of program on hard disk... 1000s of lines of programming code stored at multiple places..cant afford years of hard work lost due to hard disk failure...;)
The program is taking instructions from SDCARD and sending the data to graphical watetfall electronics card...

A success Finally- Low cost DC servo

2018-06-03T10:02:00.000+05:00

At last, i am able to successfully control the servo motor with low cost electronics to the finest resolution the encoder can support. This quadrature encoder takes 192 pulses per revolution( PPR)of the motor. The PID values for this motor is P=20, I=20 and D=0.1
Ziegler–Nichols method for PID manual tuning:
Set all gains to 0.
Increase Kd until the system oscillates.
Reduce Kd by a factor of 2-4.
Set Kp to about 1% of Kd.
Increase Kp until oscillations start.
Decrease Kp by a factor of 2-4.
Set Ki to about 1% of Kp.
Increase Ki until oscillations start.
Decrease Ki by a factor of 2-4.

Tinkering with Low Cost DC servo motor

2018-06-03T09:55:00.001+05:00

For the past many years i am using Stepper motors and i am happy with these motors until now. Stepper motors are Open loop control as they have no feedback mechanism to the main controller. Once they loose steps the error will remain there spoiling the purpose of there use. At high speed the torque become low and prone to loosing steps.
So i am shifting myself from Stepper motors toward Servo motors. But all the electronics stuff as well as servo motor itself is too pricey for a hobbiest like me. This post is to study whether an ordinary DC motor can be converted into reliable closed loop servo motor. I purchased a bunch of DC motors with Quadrature incremental encoder from a scrap. The difficult thing is to find segregate the DC inputs to encoder sensors and the A+ B+ encoder signal wiring. Luckily by tinkering i found all circuitry without damaging electronics

My New CNC Machine

2014-05-17T21:28:00.001+05:00

Just Completed my New CNC Machine that has bigger area (4ft x 4ft) very fast (2100IPM) and accurate. The machine is sturdy and can machine non-ferrous metals, plastics and wood efficiently.

Drawings of the parts.

CAD 3D Model:

Finished Machine:

Video of the machine:

Allah is the Light of the heavens and the earth

2012-05-10T07:57:00.002+05:00

Allah says:

"Allah is the Light of the heavens and the earth; the example

of His light is like a niche in which is a lamp; the lamp is in a glass;

the glass is as if it were a star shining like a pearl, kindled by the

blessed olive tree,neither of the east nor of the west - it is close

that the oil itself get ablaze although the fire does not touch it;

light upon light; Allah guides towards His light whomever He wills;

and Allah illustrates examples for mankind; and Allah knows everything."

My wife want this beautiful ayah to be a part of our house.

my brother painted and installed at the entrance of the drawing room:

Some More Marbel work

2012-05-10T07:52:00.002+05:00

This time i tested the marbel and carved the "Kalma" that is the basis of our life. It went well, took almost 8 Hrs to finish.

and here is the picture from the internet:

Converted into vectors and here you go:

Marble Carving

2012-04-25T20:44:00.001+05:00

This is my 1st experience of carving marble on my CNC Machine.. I think the results are satisfactory:)

Laminar Flow Nozzle- Update on DIY Anemometer

2011-06-22T12:54:00.000+05:00

I installed the Anemometer and it is working quite well... Anemometer heart is a CDROM DC motor. It produces voltages when rotated by wind. these voltages are then fed to micro-controller to get the wind speed.
Here is the video:

Laminar Flow Nozzle- Automatic Control Unit

2011-06-19T22:02:00.002+05:00

Today no experimentation was carried out on the laminar flow nozzle. My RGB LED's and Fiber Optic End Glow cable (PMMA) are on the way from European supplier.. I already have Solid State relay (DC-AC) to control 220 V AC pump. I drew the controller circuit for the project. This circuit is based on ATMEL A328 and can control 3Watt RGB LED, Pump(220V AC), my DIY Anemometer, temperature sensor, DIY soil moisture sensor, 24V Solenoid cutter mechanism. I have added one shift register 74HC595 so that i can use the 8 output to control the lighting of surroundings... (The resistances have yet to be calculated after arrival of the LEDs)

Laminar Flow Nozzle- 2nd but Successfull Cutter Attempt

2011-06-18T16:46:00.000+05:00

The difficult part is cutter mechanism...here is my second successful attempt of making the cutter:)

Laminar Flow Nozzle Updates- Cutter mechanism, Pre-Filtration Unit and modified Anemometer

2011-06-16T19:31:00.000+05:00

Here is the Cutter mechanism with 12 V Solenoid. Also you can see Pre-Filtration Unit...and a painted modified anemometer...

DIY Anemometer- Sensor for Laminar Flow Fountain Control at High wind

2011-06-15T20:20:00.000+05:00

I have made a small wind sensor from a DC motor of old CD ROM. This DC Motor does generate 0.3V at high wind. So i have to use it for my Laminar Nozzle project. At low wind the voltage generated by the motor is little but if wind is on higher side a voltage of about 0.12 VDC the fountain stream can be disturbed.

Did a little programming in Arduino when a DC voltages reaches to 0.12Volts stop the fountain and when the voltage below this value ON the fountain... I know you people will understand.. this is not a real Anemometer but with wind it gives us a voltage reading which we can use to start or stop the fountain.

Updates on Laminar Flow Nozzle

2011-06-11T15:27:00.000+05:00

Dear readers,
Been involve in developing the garden in-front of my house. I am going to install laminar flow fountain their. I made this fountain from 6inch diameter 1foot length pipe. The stream seems to me a perfect laminar. you can see how crystal clear it is.
I have to install RGB lighting and cutter mechanism. A good micro-controller programming will reveal millions of colours in this fountain.

and here a small video clip. Actually the Nozzle is connected to low pressure tap water, therefore the laminar Arc is small. I have to make a small pond with pump that will give this fountain a real life.

Graphical Waterfall- Last Video

2011-05-15T12:50:00.000+05:00

Hi,
This is the last video i made this morning. I added color additives to the water but the camera did not catch the graphics in the waterfall :)...

I am currently involves in too many projects and i am abandoning it for the time being. Following is the micro-controller programming i did:

//Pin connected to ST_CP of 74HC595
int latchPin = 6;
//Pin connected to SH_CP of 74HC595
int clockPin = 13;
////Pin connected to DS of 74HC595
int dataPin = 11;
byte FirstByte;
byte SecondByte;
byte ThirdByte;
byte FourthByte;
byte FifthByte;
int val;
byte serialInArray[5]; // array for storing 5 bytes as they arrive from VB software
int serialCount = 0; // for counting the number of bytes received


void setup() {
  //Start Serial for debuging purposes 
  Serial.begin(9600);
  //set pins to output because they are addressed in the main loop
  pinMode(latchPin, OUTPUT);

}

void loop() {
  
   if (Serial.available() > 0){
       serialInArray[serialCount] = Serial.read(); // read a byte sent by processing
        serialCount++;  // increment number of bytes received

    if (serialCount > 4 ) {  
 FirstByte = serialInArray[0]; 
 SecondByte = serialInArray[1]; 
        ThirdByte = serialInArray[2];
        FourthByte = serialInArray[3];
        FifthByte = serialInArray[4];
Serial.print(FirstByte);
Serial.print(SecondByte);
Serial.print(ThirdByte);
Serial.print(FourthByte);
Serial.print(FifthByte);
Serial.println("");

     digitalWrite(latchPin, 0);
    shiftOut(dataPin, clockPin, FirstByte); 
             shiftOut(dataPin, clockPin, SecondByte);
                 shiftOut(dataPin, clockPin, ThirdByte);
                 shiftOut(dataPin, clockPin, FourthByte);  
       shiftOut(dataPin, clockPin, FifthByte);
     
   
    //return the latch pin high to signal chip that it 
    //no longer needs to listen for information
    digitalWrite(latchPin, 1);
 serialCount = 0;
 delay(20);
   }
}
}
void shiftOut(int myDataPin, int myClockPin, byte myDataOut) {
  // This shifts 8 bits out MSB first, 
  //on the rising edge of the clock,
  //clock idles low

//internal function setup
  int i=0;
  int pinState;
  pinMode(myClockPin, OUTPUT);
  pinMode(myDataPin, OUTPUT);

 //clear everything out just in case to
 //prepare shift register for bit shifting
  digitalWrite(myDataPin, 0);
  digitalWrite(myClockPin, 0);

  //for each bit in the byte myDataOutÃ¯Â¿Â½
  //NOTICE THAT WE ARE COUNTING DOWN in our for loop
  //This means that 000001 or "1" will go through such
  //that it will be pin Q0 that lights. 
  for (i=7; i>=0; i--)  {
    digitalWrite(myClockPin, 0);

    //if the value passed to myDataOut and a bitmask result 
    // true then... so if we are at i=6 and our value is
    // %11010100 it would the code compares it to %01000000 
    // and proceeds to set pinState to 1.
    if ( myDataOut & (1<
      pinState= 1;
    }
    else { 
      pinState= 0;
    }

    //Sets the pin to HIGH or LOW depending on pinState
    digitalWrite(myDataPin, pinState);
    //register shifts bits on upstroke of clock pin  
    digitalWrite(myClockPin, 1);
    //zero the data pin after shift to prevent bleed through
    digitalWrite(myDataPin, 0);
  }

  //stop shifting
  digitalWrite(myClockPin, 0);
}