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Tag Archives: DIY

Serial Ports are dead? Think again!

serial Port connector

Your Desktop-PC doesn’t have a Serial Port in the back side? Don’t be so sure of it. If you can’t see, doesn’t mean it ain’t there! All you have to do is look properly. If you are a full-time laptop user, stop right here! This article is of no help to you. Good old desktop users might have a shot at a native COM port in your computer! Just read along… What is this UART anyway? UART is one of the most preferred form of debugging …

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Standalone BreadBoard Breakout for PIC Microcontrollers

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I wanted to make a breadboard breakout for PIC microcontrollers after seeing this arduino breadboard breakout from adafruit. This product is fully standalone and yet has very small footprint so that it can be conveniently plugged into the breadboard. The most amazing part was that it still had 2 rows on each side of the breadboard for the user to jump wires. First I thought of making a breakout board for the 40 Pin DIP package that I usually use. Then I realized …

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How to Make PCBs at Home With Toner Transfer Method

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Toner Transfer method for making PCB at home is probably one thing that went as viral as the Arduino. Electronics hobbyists around the world started using it to make professional looking PCBs at home. Here I will document the steps involved in fabricating PCBs with things that you can mostly find off the shelf. Before getting to the details in the making your own PCBs I wish to share an old experience. So, if you have left the soldering iron …

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How to Make a Tray to suspend PCBs into the Etchant

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In this post I will document the procedure involved in making a tray to suspend PCBs. The etchant (FeCl3 solution) is toxic and cannot be handled with bare hands. So I devised this easy and reusable method for suspending the PCBs with the toner into the solution. If you are planning to make PCBs once in a while, then this method could prove to be really useful and time saving. But if you are a one timer then this a tiresome venture …

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Make a Digital Clock with DS1307 and PIC 18F4520

digital clock lcd

Digital clocks are are very commonly (cheaply) available these days. Some of them have a built in RTC to keep the time running even if the main battery fails and some of them don’t. In either case, for an offline embedded application to get a time stamp, an RTC in almost the only cheap solution solution available. Most of these clocks use a 7-Segment display to display the time and date while some use LCD displays. In this post we will see how to …

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Hack a Toy Car to Make a Cheap Wireless Robot

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Hack a toy car to make a cheap wireless robot? Yes, cheap toy remote cars form china can be scavenged to get their remotes to work with our robots. All of us have seen and played with toy cars some time in the past. Some -like me- might have bought them to get the magnets inside those DC motors. I don’t know why those C shaped magnets caught my attention more than the car. I have to admit even after growing …

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How-to: Make a Chassis For Your Robot

robots chassis

Readymade chassis that are available in the market (like the one above) are really good, cheap and for all you know they might have been subjected to a R&D before fabrication. In spite of all these advantages I still see the following issues with readymade chassis. They are not available the shape and size that I feel fit for my robot. Most of the time I am forced to restrict the robot size to the size of the chassis that is …

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Programming a Line Follower Robot

Line Follower sensor

Programming a Line Follower Robot is the next step that you should do after building it. This is a follow-up on my previous post Line Follower Robot – Build it from scratch. If you haven’t already read it, I suggest you read it before going any further in this post. When it comes to programming a line follower robot doesn’t mean you can just copy paste a bunch of code from somewhere and say you are done programming 😛 You …

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Line Follower Robot – Build it from scratch

Line Follower

Line Follower Robots are the most common type of robots that are built by hobbyist and student interested in robotics and embedded systems. The reason for the popularity of the Line Follower robot is the fact that is simple to build and easy to understand the logic behind it. This post will give you working level knowledge on building and programming line follower robots from scratch. A robot is a combination of hardware and software. One has to give equal …

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DIY wireless Keyboard (fun in making things yourself)

TVS-gold-keyboard

I have a TVS eGold mechanical Keyboard. I was looking at some websites that sold wireless keyboard and soon found out that they were all membrane type. I have been using the mechanical one for quiet some time now and love it so much that I can’t possibly revert back to the membrane even if were wireless. Thats when I got the Idea to convert my mechanical wired-keyboard into a wireless one a ‘DIY wireless keyboard’. I was reading about the PS2 interface and …

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