Tazkirah_1

Kematian itu datang tanpa diundang. Ia mengambil sesiapa sahaja tanpa berbincang. Si kaya atau miskin bukan ukuran. Orang bawahan ataupun atasan, bukan persoalan.
Bila maut menjemput, tiada lagi pangkat, ataupun harta, ataupun nama, keturunan ataupun anak siapa. Tiada layanan istimewa di sana hanya kerana kedudukan kita di dunia. Hanya amalan soleh sahaja yang berguna.
Segala pujian yang diatur, ataupun hiasan pingat yang diukur, ataupun bunga yang ditabur, jika tiada padanya keredhaan Allah yang hakiki maka ia hanyalah bagaikan debu yang gugur.
Setiap yang mati tiada lagi tercari-cari teman kekasih hati, ataupun ibu, isteri ataupun suami. Kita hanya ketika itu bertanya 'apakah amalanku yang murni lagi diterima Ilahi untuk bekalan di alam yang kekal abadi ini? Ke syurgakah daku ataupun ke neraka yang ngeri? - (DrMAZA.com)

Berterus terang adakalanya menyakitkan walaupun jauh di sudut hati yang diingini hanyalah kasih-sayang.

Silapnya, kata-kata kita sering memukul walaupun jiwa kita ingin merangkul.

Ya Allah, kurniakan aku bicara benar yang tidak membakar! - (Ustaz Pahrol Mohamad Juoi)

L293D as motor driver

Today, I would like to introduced one chip called as L293D. This is dual DC motor driver connection and used to control for both direction. The connection of this chip to the Arduino is given in the picture below.

Part lists:

DC Motor x 2

L293D

Arduino Uno (any board)

External battery 9V (to powerup motor)

Circuit done by fritzing

Code: https://gist.github.com/zulkola/22397f8ced16d3728057

PS2 wireless joystick

This is PS2 wireless joystick that I have bought from ebay.com. Today, I want to show how to connect this joystick with the Arduino board. Actually, there have no other electronic components for interfacing between them, just 6 jumper wires and Arduino board.

the connection for the joystick.

Connection wires (green led will stop blinking when it connected)

White (datapin) --> pin D2

Grey (commandPin) --> pin D3

Blue (ground) --> Gnd

Purple (power) --> 5V

Green (attentionPin) --> pin D4

Black (clockPin) --> pin D5

However, this module have their own library. Please download from this link

http://playground.arduino.cc/Main/PSXLibrary

Run an example that given in that library, change the pin number based on the selected pin above, upload and DONE!

When you press one button in joystick and hold it, it will give you the different number continuously. After you release it, the number back to zero (0). You can check it from Serial monitor.

Obstacle Robot Car

This robot car was developed to detect any obstacle in the front of robot and prevent it by changing the direction. 

Parts required:

Arduino Nano

Mini breadboard

Continuous Futaba Servo Motor x 2

3d Printed body

7.4V LIPO battery

Ultrasonic Sensor SR-04

Jumper Wire

Video of this robot

Complete arduino trainer

This is arduino trainer for beginner based on the Modul Asas Arduino. I just need to add photoresistor for completing it.

                    D2 - Buzzer                           A0 - Potentiometer 1

                    D3 - LED for PWM              A1 - Potentiometer 2

                    D4 - Button                           A2 - LM35 (Temperature sensor)

                    D13 - LED for digital           A3 - Photoresistor (LDR)

Laser pointer robot

Robot car

Reminder

This post just to remind me for anything related to the electronic that I need to considered before start any new project.

1. If use Arduino Pro Mini, Servo motor and LIPO as power source, please use bigger wire to ensure that the current can flow easily. Cannot to use small wire such as AWG30 and connected to the RAW pin at Pro Mini. 
2. Make sure all the components/parts well function b4 install to the structure.
3. Sometime for Pro mini, they used different chip which is ATMEGA328P or ATMEGA168. So, please make sure you select the right board in Arduino IDE before you upload the code.
4. Working current for MG995 is more or equal to 1A.
5. If the buzzer did not play a sound, just tick, tick, tick. Put some delay between HIGH and LOW in coding.

Smart Door Lock - Completed

Smart Door Lock for this version has been completed and well function. After some modification on the circuit and the casing, the final product become smaller than before. 

Before

After (with apps for Android)

Smart door lock

Just completed for the first prototype. Well functioning and working. Need to minimize the size of project.

Unlocked Door part 2

After installed to the door. Next, to include the switch and the battery. However, after testing, that size of servo motor can't afford to rotate the knob. So, this prototype has failed. 

Summary: Don't start fabricate anything before you completed the circuit and testing. 

Unlocked Door part 1

Unlocked your door using smartphone.

Modul Asas Arduino

This is module that we published under ump publisher. It totally in bahasa malaysia since no arduino book yet in bahasa. Currently, it in printing process before completed published this year 2015. This module is compiling all tutorials that we conducted in the training. So, i can say that it is fully guided module for beginner who has no basic in arduino as well as in electronic.

New project

This is my planning project for the next 4 years. Need to prepare the literature review for this product. Once it completed, the prototype will be developed for an experiment.

Arduino module for beginner

New arduino module will be released soon. Waiting for the price.

Minimizing robot car controller

What I have done here is how to shrink your project to the smallest size of project.

Before (left) and After (right)

However, I need to cover all the circuit into fit casing. This product is a robot car that can be controlled by using android apps. It have ultrasonic sensor to detect any obstacle in the front car and stop the car automatically. The price for this project is about RM80 (controller only). Any question can directly whatsapp to me (013-5817878) - zul

Wire Wrapping Tools AWG30

This is wire wrapping tools for prototyping circuit. I bought this from ebay.com with price USD18.55. It quite expensive for just only one blue long metal stick. However, I really satisfied with its performance when we wrapping the awg wire to the electronic components.

You can see the process of wrapping from this youtube link

Baby Motion Detector

Alat ini digunakan untuk memberi peringatan kepada ibubapa ketika bayi sedang tido di dalam bilik. Kebanyakan kes, bayi sering jatuh dari katil kerana tidak disedari ibubapa yang berada di luar bilik. 

Kedua-dua alat ini mempunyai fungsi yang berbeza. Satu adalah penghantar dan satu lagi adalah penerima. 

Menggunakan komunikasi melalui frekuensi radio, penghantar akan mengesan pergerakan dan menghantar signal kepada penerima. Penerima pula menerima signal dan seterusnya membunyikan buzzer. Sistem ini adalah seperti alarm keselamatan rumah. 

Pastikan kedua-dua alat dihidupkan untuk berkomunikasi antara satu sama lain. 

Kos untuk projek ini lebih kurang RM 50

Baby motion alarm system

This device is to alert parents when baby sleep in the bed. Sometimes, parents did not realized that baby already wake up and trying to crawl down from the bed. It is very dangerous situation due to size of baby. It can be connected about 10m distance. 

Rehabilitation Shoes V3 (Part 2)

Completed V3 Rehabilitation Shoes insole

Alhamdulillah, I have done the third version of Rehabilitation Shoes.

The improvement of this version are as follows:
1) All the circuit was placed inside the custom 3d printed box
2) Include the buzzer and led as actuator
3) Lcd display for monitoring without android device

My students project

Table tennis launcher

Keyless door lock using Android

ECG and EMG portable devices

ECG T-shirt monitoring

Anti-theft and child monitoring for automotive

Balancing Force plate

Electro-goniometer device

Rehabilitation Shoes V3

Updated circuit by includes an actuator

Improvement of this device is include an actuators and display monitor. An actuators here are LED and buzzer. All the components will be put into customized box which will be printed using 3D printer. All dimensions need to measure before design the box.

Completed: 40%

Quadcopter (Part 2)

Complete assembled

This quadcopter has fully assembled by using all fit connectors. Only one motor got a problem due to wrong connections and it burn. Need to wait for the next motor arrived.

Next step is need to upload the code using Arduino UNO and make it rotate.

Progress: 20%

Rehabilitation Shoes V2 (Part 2)

Completed Rehabilitation Shoes V2

This completed rehabilitation shoes V2 is to monitor the balance position of people when standing on it. Just switch on and standing on the insole, start your apps and try to balance your body until you get the right posture.

Thank you, see you again in the next post

Rehabilitation Shoes V2 (Part 1)

New version of insole

This is a new version of rehabilitation shoes with apps. This apps was develop using MIT apps inventor. However, I have reduce the number of sensors on insole into three FSR only for easier monitoring process.

This apps also planned to plot a graph for user friendly application.

Rehabilitation Shoes (Part 2)

Complete installation of force sensors

The progress of rehabilitation shoes is about 50%. There need final touch up to make it nice and attractive. The apps still in progress, to collect data and display in Android phone.

Velcro Strap - to strap the wire to prevent messy - DONE

Pouch Bag - To put all the connection wire and board inside it - DONE

Apps - to display all data sent by sensors - 20%

Need suggestion

In this picture, I have some modules and electronics parts:

1. Arduino Pro Mini = RM 35
2. RTC Module = RM 15
3. Bluetooth Module = RM 25
4. IR transmitter and receiver = RM 10
5. Photoresistor = RM 5
6. LED's and resistor = RM 1.00 (5 led's)

What project that can we manage using those parts? Any idea?

If you want to buy it, just whatsapp me: 013-5817878

RTC Module Connection

RTC Module need four (4) required connection pin which is VCC, GND, SDA and SCL.

SDA and SCL are pin for communication, this is for I2C connection.

The connection of RTC and Arduino are as follows:

VCC --> 5V

GND --> GND

SDA --> A4 / SDA

SCL --> A5 / SCL

For UNO, SDA and SCL pin are beside the GND pin in digital row.

Maybe you don't know, but it is labeled at the behind of the board.

Alternatively, A4 and A5 analog pin can be as SDA and SCL pin as well.

InfraRed (receiver and transmitter)

1. Connect all components (ir receiver and ir transmitter) as shown in the figure below

  

2. Download library for IRremote

https://github.com/shirriff/Arduino-IRremote

3. Extract and put the folder into Arduino library in your computer
4. Upload IRrecvDump example
5. Get the HEX code from your remote by press button directly to the ir receiver

Example:  Sony: A90, 12bits will display in serial monitor

6. Method to write the code: irsend.sendSony(0xA90, 12); delay(40);

7. After you complete your transmitting code, upload and DONE!

Example code: http://www.codeshare.io/mpZaT

8. Bring your device to the TV and start it.

Good sharing:

http://garagelab.com/profiles/blogs/tutorial-arduino-ir-sender-and-receiver

http://www.instructables.com/id/Arduino-Infrared-Remote-tutorial/

Rehabilitation Shoes (Part I)

My progress on Rehabilitation Shoes 

Solder the resistor on Mega proto shield

Also the female header connector

Complete connect to force sensor

Next step, is to develop Android Apps for monitoring device

Data logging shield

This is data logging shield. It suitable for developing stand alone data logger device. This also have real time clock module, and SD card module integrated together. Just attached this shield stacked on Arduino UNO or Mega, put the SD card and coin battery CR1220, then upload the code and DONE :)
Just need to identify which sensor that you need to measure.
The price is RM35 including coin battery for FREE.
If you want to buy it, whatsapp me: 013-5817878

Power cord plug

This is for beginner in electrical. Everybody have to know about it bcoz it is very2 basic knowledge.

Raspberry pi in the house

New hobby in making diy projects. This is raspberry pi b+ as a small computer.