OLRE16 with Lattice CPLD as Clocking/Addressing interface

Now with its 512 RGB leds :grin:



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OLRE16

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9 Comments

Thank you! :blush:

Some explanation:
Here I test the Logic Clocking/Addressing for 32*16 multiplexing around the TLC5958. With all the leds this time.
Previously I first tried to code this multiplexing circuit directly with the STM32F4 but it was too much process for a very bad result.
Then I designed an external logic circuit for that purpose, it was working but a was very complex circuit.
And finally I reduce this big logic circuit to one unique programmable logic ic, the Lattice CPLD.
Here I used an LC4256V evaluation board from Lattice. It's a TQFP100 with 256 macrocells and this is too much for that purpose.
So I make the VHDL program very small to fit in a LV4064(64 macrocells) which exists in a small TQFP44 package.
The components on the breadboard are just for 3.3V to 5V level shifting.

Voilà!

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Interesting topic! Though it's a little bit difficult to follow the discussions taking place as comments in the image section of the forum. Why don't you just create a thread describing the project and put/link your images there?

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Man, it looks awesome! Very well done! :-)

Many greets,
Peter

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Just now, ilmenator said:

Interesting topic! Though it's a little bit difficult to follow the discussions taking place as comments in the image section of the forum. Why don't you just create a thread describing the project and put/link your images there?

Don't worry, I will do it. For you to know that the dokuwiki already exists even if I have to update it also.

Edited by Antichambre

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Epic! Must be quite zen soldering all of those LEDs...!

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19 minutes ago, latigid on said:

Epic! Must be quite zen soldering all of those LEDs...!

I still do a magnesium cure a few days before :rolleyes:
With the right method it's about 6 hours to solder and test those 512 rgb leds...

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