16x16 LED panel direct control
I got 10 LED panels of 16x16 LEDs each. Now I want to create a big modular display system with these and I'm also planning to post this on the instrucatbles website once I succeed. But I have some problems getting started. I spent alot of time reading all LED matrix related topics on the website here but none of the designs matches the fixed design I have on those panels. Instead of using some sort of multiplexing, 32 shift registers are used for 256 LEDs which means every LED has it's own shift register output.
Put then again, I also find 3 buffer ICs on the panels and I have no idea where they are used for... Below the info I have now:
- 16x16 yellow LEDs
- 32x M74HC4094B1 8-bit shift registers
- 3x 74HC125N Quad buffer/line register, 3 state
First I want to work with only 1 panel and be able to control this by putting images on it. But for this I have to understand completely how the hardware is built up so I first want to create the schematic of 1 panel.
Can somebody help me with this and get me started on the project?
First goal: just control 1 panel with an AVR to put some text on it and let is scroll.
Final goal: be able to connect multiple panels and configure the software accordingly to the panels used. Then use a PC to put images on the screen and maybe even create a live feed (webcam capture). For this maybe an FPGA should be used to have more processing power/memory.
Many thanks already in advance!