Chemwen0

What's one thing you may find yourself buying every year or even twice, thrice at times more and keep promising yourself: " Okay, I'll be more careful with this one?" Well, for me, its the earphones. I just never understand how they always keep spoiling.... Aand, its always on one side and then it sucks cause then its never as loud as it used to be. So I agreed with myself never to buy any anymore but instead, I will be my own handy man(or woman) and do the repair myself. That is where Soldering comes in. I am still not perfect but I thought i'd share on it and hope that you may try it too. Its a bit tricky but you'll just get a hang of it and hopefully, you won't waste your money all the time getting some new pair of earphones. Aand even get to brag on doing repairs for yourself. So my definition of soldering is " Soldering is a skill that enables you to join electronic components using some molten metal called the solder(which not only pro...

So, I did a simple code that I thought would be fun to share. Its more or less like the basics of embedded systems. Inputs and Outputs. Actually, maybe its the basics of everything. So I'm Kenyan and our currency is the Shilling( Ksh ) hence any time i mention money, I will refer to it in Ksh form. You will approximately need about Ksh 800 to have this project up and running(FYI, everything you use in this project is reusable and integrate-able to other projects). Requirements: A push button An LED Two resistors( I used 220 Ohm and a 10K one) A Microcontroller (MCU) I will be using node MCU but you can do it using Arduino with exactly the same code that I made. A lot of jumper wires of course. I made a breadboard layout of how you can place your parts. I made it using Fritzing . Feel free to download and start drawing out your projects. The logic of the code is that: Before the button is pressed, the LED is off. When the button is being pressed, the ...

So I just finished my first draft code for the Load cell with Arduino and decided to share it. Feel free to make any modifications on it or create your own. Also, I decided to use the LCD module instead of the MCUFriend as i didn't want a lot of functionality in it. This is the code i used. It's pretty simple. /*  * Chemwen0  * By Doreen Chemweno  * Load Cell HX711 Module Interface with Arduino to measure weight in Kgs  Arduino   pin   5 -> HX711 CLK  6 -> DOUT  5V -> VCC  GND -> GND  Almost any pin on the Arduino Uno will be compatible with DOUT/CLK.  The HX711 board can be powered from 2.7V to 5V so the Arduino 5V power should be fine. */ #include "HX711.h"  //You must have this library in your arduino library folder #include <LiquidCrystal_I2C.h> #define DOUT  6 #define CLK  5 LiquidCrystal_I2C lcd(0x3F,18,2); //important for display to work. Set the LCD Add...

Instead of Android Studio, I decided to use MIT App Inventor 2 which is a web based, open source application that is maintained by MIT( Massachusetts Institute of Technology ) and is used for developing simple Android Aplications.  I liked and preferred it to Android studio because of its simplicity. Anyone can use it, even those who have very little coding experience can easily understand it and within no time be able to develop their own android applications. For those who are just beginning the programmer journey in Android, you can start with App Inventor for it to aid you in understanding basic concepts on Android App development then later start using Android Studio as it is actually the recommended and official IDE for Android Development. This is part of the code from the app (LoadBlue Control) I will be using for our Weighing Scale project. MIT App Inventor is a great way to start learning how to build applications for Android. Once you get a good hold of how ...

So about a week or two ago, I attended the Application Security training in Moi university which was sponsored by IEEE , IEEE Branch Moi , and IBM . It was a really nice experience and i learnt a lot. I will just share a short piece about the training but you can always access it at  IBM Skills Academy . There is a lot you can learn and grow your tech skills with there. So, basically, IBM Application security training was majorly about making your applications secure. We were specifically trained on Web Application security; the threats that affect ours websites and how to go about them when faced with web attacks and also how to prevent these attacks from affecting our websites and web apps. We used a software provided by IBM known as  Appscan  which is used to explore, scan and help identify vulnerabilities in web and mobile applications. Just typing something in your browser and voila! you've just accessed something you were not supposed to just because someone ...

The Bluetooth module was quite easy to understand. Though, there were some of the things that i noted and i would like to share with you so that you will even take a shorter time when you want to use it. HC-05 has 6 header pins(the STATE, RXD, TXD, GND, VCC, EN). It can work as both master and slave. This means that it can either initiate a connection or accept a connection from another device. Activating AT mode: Ensure that pin 34 is connected to 3.3v. With all the pins connected, disconnect the HC-05 from a power source. Start pressing the button below the EN header pin and switch on the module while doing it. Notice that the LED starts blinking slowly. You are now in AT mode which allows you to view and change the Bluetooth settings e.g the name of the module, the baud rate, whether or not it operates in master of slave mode. e.t.c.

So, for the past one week, I attended an event on Business Intelligence that was sponsored by IBM and IEEE. It was fun and very productive as I got to learn a lot. And I will share that since I didn't get to share anything else this week. The BI Analyst is a path that gives one the opportunity to learn the essential reporting software's to create management reports. Majorly you will be required to have skills on reporting applications such as Data Filters and Graphics, Structured Query Language(SQL), HTML and structured and unstructured data. As a BI Analyst, you will be required to use this tools to create reports,analyze and monitor events to meet an organization's requirements. But don't let all that scare you. You can also learn as you go. Get to learn what Cognos is. Haha, that name never stops intriguing me. Its a path that is fun and it would be amazing if all of you would try it. Its  a skill that even if your goal isn't to be an Analyst, it will ...