ROTATING LED MESSAGE DISPLAY SYSTEM

Abstract: The project is a rotating LED message display system which displays messages programmed in a microcontroller. There is no user input for the system, the different messages will scroll, with respective intervals/delays by the microcontroller itself which is already programmed by the user; the microcontroller is programmed using the 80C51 programmer. The code is written in C language using the Visual C++ software. This circuit needs to be mounted on to the mechanical structure [rotating disc] where it displays the messages that are stored in the microcontroller as indicated in the codes. The disc is rotated using a two phase motor, the motors speed is kept constant by usage of a light dimmer. The messages can be changed as per user need by rewriting the microcontroller's in-built memory.

Category:

Entertainment

Tags:

• BSc
• Computer
• Systems
• Engineering
• Final
• Project

[lichtakira]

How did you provide the power to the LEDs?

Do you use surface conduct brush? or you have the power source on the rotating part?

[motfat]

powered them using a 9v battery which is mounted on the rotating disc...

[pdvelez]

how much for the schematic, because I'd rather use a 16f628.

[motfat]

100 GBP

Or Near Offer

where are you located..?

[abdulrahman2008]

o ya and by the way he wrote it in arabic!

[abdulrahman2008]

dude it says allah akbar at the begining and at the end so the guy that owns this thing is like muslim or arabic!

[Rainievust]

how did you arrange the leds on disc to make the words displayed so good?!

[Rainievust]

wow..unbelieveable..how could you do that!?

[H3liosphan]

Good work on that, but the video ain't half annoying what with that wobble - next time secure it to the surface, should sound a lot less like a chainsaw!

I had a go at building a small POV display, it isn't that difficult working everything out on your own, except I ran into the proverbial brick wall when I wanted to ditch the 'onboard' battery in favour of a supply passed through the rotator spindle. Its difficult as hell and the battery weight balancing was causing insurmountable problems.

[shimizuakiko]

nice nice nice

[kirik444]

Respect from Russia =)))

[mubd1234]

I bought something almost exactly like this (but in a pen fan form factor) from an electronics store for $10