Windom
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Bus Master said:Hi all,
Where can i buy an RGB LED Cluster that i can use in my outdoor RGB LED screen?
Rather, no. Microcontroller can serve signboards with text features. Displaying of a graphic information requires more powerful device. Of course, some processors have a very high operation frequency. But I wouldn't stick the prefix "micro" to them.asuncao said:for now;
i just want to implement a picture on my led panel. i know fpga is need for big applications but cant i do it with microcontroller and driver ic s ??
Altera has a free software, so-called "web-version". It doesn't support all devices, but it is quite enough for a beginning.asuncao said:now, i decided to learn the cpld and fpga. and the main subject is where to start for fpga. any tutorials ?? help?
techie said:you need serial to paralled LED drivers like TB62705. With that you require very few pins on FPGA.
You must use several frame buffers to avoid moving artefacts.RichardH said:I have a couple of questions
if you wanted to display video on something like this, would you use a frame store then display the image from there or could you simply sample the video (at a preset rate depending upon the number of pixels your display has) and clock it out to the LED drivers??
1st method - you will get problems with compensation of scan on adjacent panels.RichardH said:Am I better to multiplex using say the Macrobloc drivers for the CC and transistors for CA or drive each LED using a Macrobloc driver? I am sure it will be brighter and more even if the outputs are driven directly, but I am not sure of the pros and cons of each method.
No. You can't separate a single output with OE, it takes effect onto whole chip,RichardH said:Finally, if I PWM (on say the OE of the LED drivers) to get brightness control of the whole board, how do I achieve the greyscale on an individual pixel?
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