LEDBoard_4x2_p20x5

• LEDBoard with 4x2 LEDs
• pixel pitch: 20mm x 5mm
• LED: Rohm MSL0402RGB (1.8x1.6x0.5mm RGB)
• Driver: TI TLC5971 (16bit dimming, constant current driver)

compatible to LEDBoard_4x6_p20x5

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• LEDBoard_4x2_p20x5
  • Project-Status
  • Technical Information
    • mapping
      • c++ / arduino
    • HW
    • controlling
  • License

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Project-Status

WIP

• design schematics
• layout pcb
• order pcbs
• order parts
• solder boards
• test
• update documentation

Technical Information

there are groups of 4 LEDs that are controlled by one TLC5971.
every controller chip has 12 ConstantCurrent outputs. so every LED is controllable individual.

mapping

you need to create a mapping to linearize the order:

TODO: test & check if this table is correct

	0	1	2	3
0	IC1 LED1	IC1 LED2	IC2 LED1	IC2 LED2
1	IC1 LED3	IC1 LED4	IC2 LED3	IC2 LED4

c++ / arduino

const uint8_t channel_position_map[2][4] = {
    { 0,  1,  4,  5},
    { 2,  3,  6,  7},
};

HW

• PCB size: ?x?x1,6mm
• pixel-pitch: 20x5mm
• 3.8V..5.5V
• <= ??A (maximum)

controlling

for arduino you can use ulrichstern/Tlc59711

for other things have a look at LEDBoard_4x4_16bit

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License

all files in LEDBoard_4x2_p20x5 by Stefan Krüger (s-light) are licensed under a
Creative Commons Attribution 4.0 International License .

all software parts/files are licensed under MIT.