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LED tiles V2: Difference between revisions
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BBBBBBBB BBBBBBBB GGGGGGGG GGGGGGGG RRRRRRRR RRRRRRR | BBBBBBBB BBBBBBBB GGGGGGGG GGGGGGGG RRRRRRRR RRRRRRR | BBBBBBBB BBBBBBBB GGGGGGGG GGGGGGGG RRRRRRRR RRRRRRR ... etc .. x 384 bits | BBBBBBBB BBBBBBBB GGGGGGGG GGGGGGGG RRRRRRRR RRRRRRR | BBBBBBBB BBBBBBBB GGGGGGGG GGGGGGGG RRRRRRRR RRRRRRR | BBBBBBBB BBBBBBBB GGGGGGGG GGGGGGGG RRRRRRRR RRRRRRR ... etc .. x 384 bits | ||
</pre> | </pre> | ||
There are two 'banks'; the top 8 rows and bottom 8 rows. There are loaded with data using two different data in lines, D1 & D2. The data lines are clocked and latched with the same shared clock and latch signals. | |||
In each bank, there are 8 rows. A single stream of 384 bits loads two rows of 2 x 64 LEDs. The address lines A0 & A1 select which row is being loaded from the serial data. | |||
To display a full tile, of all 1024 RGB LEDs, you need to : | |||
# Set OE=HIGH & LAT=LOW | |||
# For each address A0 & A1 = 0x00. 0x01. 0x10. 0x1 : | |||
## Clock 384 bits of data on to D1 & D2, by toggling the CLK pin from LOW to HIGH | |||
## Toggling LAT pin from HIGH to LOW to latch the 384 bits in to the driver chips. | |||
## Toggle the OE pin LOW to turn the LEDs on for that row. | |||
Repeat this very quickly as fast as you can ! :-) | |||
[[File:LED Panel Bit Stream.png]] | [[File:LED Panel Bit Stream.png]] | ||
