Vivek Gupta

Vivek Gupta Personal Blog

POV Display (Persistence of Vision) using 8051 microcontroller

By vivek | July 7, 2017 | 2 Comment


In this project I created a POV display with minimal resources. Yes I took out a ventilator fan from kitchen to make this project. I had to do it.


We often hear the term ‘lack of resources’. When I was learning all this stuff, I was in very small town called Chandrapur in Maharashtra. There was hardly any show their where I could purchase my components. I came from middle class background and was not able to afford expensive components. I was fantasized by the POV display, where you use just 8 led’s to display whole text. When it starts rotating on motor, it will produce an image or text or anything. Hobbyists are familiar with this popular DIY project. Only problem was that it required a high speed dc motor. Which was very costly. But before solving that problem, the least I could have done is made my circuit ready. So I sat and again made circuit on zero PCB.


Oh yes, and again I would sketch it before implementing, and once done I will take snapshot like above image 🙂 . It was fun turning ideas into reality. I became really good at it.


But again, so if I had not motor, how would I make it work? I went to my kitchen and pulled out the kitchen ventilator fan. Yes you heard it right – a ventilator fan 🙂 . and that to at night when everybody was sleeping, so that my Mom would not scold me. I put my circuit it and it worked like charm 😀 .

For me everything else faded. I just wanted to make it work and it worked. Here is the working video. Sorry for the bad quality, I didn’t had proper camera back then.



26 September, 2017 Reply

Great Job! I compliment you on your design and resourcefulness. When I first became interested in electronics, I also did odd jobs to pay for components (I was only 11 or 12 years old at the time), and salvaged parts from TVs and radios that people would throw out.

Now that I am 57 years and can afford to purchase the parts I need, I still occasionally take devices apart for the fun of it, and I still build circuits on perfboard. It's nice to see that others are keeping the "art" of design alive!


    26 September, 2017 Reply

    Thank you so much. Being complimented from a 57 year old guy, who himself is a maker and representative of the awesome era when companies like apple and Microsoft were just starting, is a huge achievement for me. Thank you..!

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