Business Management

Month: November 2022

  • Problems Installing Drivers on Windows

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    haroon
    in

    Sometimes the Found New Hardware Wizard fails to locate the proper driver. In this case you might have to manually tell it where the driver is located. The Found New Hardware Wizard will first ask you whether to check Windows Update; select the “No, not at this time” option and click Next. On the next…

  • Isolating Problems

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    haroon
    in

    Another important rule is to find a reliable way to reproduce a problem. If your circuit behaves in a funny way at random times, try really hard to identify what seems to cause this. Does it happen only when you press a switch? Only when an LED lights up? Whenever you move a jumper? (Many…

  • Testing Your Breadboarded Circuit

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    haroon
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    The next step is to check for short circuits between 5V and GND on your project. Connect your Arduino to your breadboard by running a jumper from the 5V and GND connections to the positive and negative rails of the breadboard. (Notice we are following the “divide and rule” principle by connecting only these two…

  • Testing the Arduino Board

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    haroon
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    Before trying very complicated experiments, it’s wise to check the simple things, especially if they don’t take much time. The first thing to check is that your Arduino board works, and the very first example, Blink, is always a good place to start, because you are probably most familiar with it, and because the LED…

  • Exclusion and Certainty

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    haroon
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    While investigating, test each component separately so that you can be absolutely certain that each one works by itself. You will gradually build up confidence about which parts of a project are doing their job and which ones are dubious. The best way to do this is using the built-in examples, as they are unlikely…

  • Simplification and Segmentation

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    haroon
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    The ancient Romans used to say divide et impera: divide and rule. Try to break down (at least mentally, and even better by sketching) the project into its components by using the understanding you have and figure out where the responsibility of each component or part of your program begins and ends. 

  • Understanding

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    haroon
    in

    Try to understand as much as possible how the parts that you’re using work and how they’re supposed to contribute to the finished project. This approach will allow you to devise some way to test each component separately. If you’ve not already done so, try drawing a schematic of your project. This helps you understand…

  • Introduction

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    haroon
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    There will come a moment in your experimentation when nothing will be working and you will have to figure out how to fix it. Troubleshooting and debugging are ancient arts in which there are a few simple rules, but most of the results are obtained through careful work and paying attention to details. More important…

  • Internet Connected Fistbump:  The Web Page

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    haroon
    in

    The web page consists of two files: index.html and sketch.js which contains the code which will detect a click and then send a message to the MQTT broker. The index.html file is quite trivial; it loads two libraries (p5.js and an MQTT library) and the sketch.js JavaScript code (which does all the work), enclosed by the…

  • Internet Connected Fistbump: Arduino code  

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    haroon
    in

    The code below is commented fairly heavily, so I’ll only describe it here in general terms: The setup() function does 4 things: The loop() does the following:  Note the first thing in setup() will cause the program to loop forever until the serial port is opened. This is to give you time to turn on the serial monitor, so that you…