5x8 LED Matrix Display: need urgent help! ^_^

Thread Starter


Joined Jan 23, 2008
hi! if you are reading this post then thank you for taking the time. i hope you can help me. :)

i'm a beginner in electronics and i have a project called Computer Based Electronic Message board, it's composed of 12 pieces of 5x8 LED Matrix and can display 15 characters at a time. it uses visual basic for the programming, and a PIC16F877A as the microcontroller. however, i want to modify it further. i want it to have a feature where the message being displayed also has an audio (like in audio e-books.) is this possible? :confused:

moreover, i want it to display the current temperature of the surroundings (like those weather forecasts..) how can this be done? :confused:

please help me... :)


Joined Apr 20, 2004
Do PIC16F887A's do VB? Or do you use VB in a PC to compose the message and transmit it to the PIC?

If the PIC has an A to D converter, get an LM34 or 35 for the temperature feature.

Don't think you have enough horsepower to do audio. Unless you use the PC.


Joined Jan 8, 2009
You could use some vb scripts to play the text what you type in for the pic to display but you can only play it through your pc hardware..


Joined Oct 5, 2009
Hi all... thanks for your replies... I am working on 8 bit moving message display... this discussion is of a great help to me. I can start with the circuit now... thanks