32x32 사이즈의 RGB LED 매트릭스 패널로, 광고판에서 많이 사용되는 제품입니다. 4mm 피치의 RGB LED가 사용되며 전체 LED는 1024개입니다.
다수의 LED가 사용되기 때문에, 충분한 전원이 확보되어야 하며, 5V/4A의 전원을 사용하실 수 있습니다.
점퍼와이어를 통해서 아두이노와 사용할 수 있으며, 실제로 본 제품을 사용하시기 위해서는 5V/4A 어댑터, 아두이노 우노 호환보드, 그리고 점퍼와이어 (64핀)이 추가로 필요합니다.
Bring a little bit of Times Square into your home with this sweet 32 x 32 square RGB LED matrix panel. These panels are normally used to make video walls, here in New York we see them on the sides of busses and bus stops, to display animations or short video clips. We thought they looked really cool so we picked up a few boxes of them from a factory. They have 1024 bright RGB LEDs arranged in a 32x32 grid on the front. On the back there is a PCB with two sets of dual IDC connectors (two input, two output: in theory you can chain these together) and 12 16-bit latches that allow you to drive the display with a 1:16 scan rate.
These displays are technically 'chainable' - connect one output to the next input - but our Arduino example code does not support this (yet). It requires a high speed processor and more RAM than the Arduino has!
Comes with: a single 32x32 RGB panel, two IDC cables and a power cable. If we happen to get them from the factory we also include 4 mounting screws and mini-magnets (it appears these are often mounted on a magnetic base).
Keep in mind that these displays are designed to be driven by FPGAs or other high speed processors: they do not have built in PWM control of any kind. Instead, you're supposed to redraw the screen over and over to 'manually' PWM the whole thing. On a 16 MHz arduino, we managed to squeeze 12-bit color (4096 colors) with 40% CPU usage but this display would really shine if driven by any FPGA, CPLD, Propeller, XMOS or other high speed multi-core controller. The good news is that the display is pre-white balanced with nice uniformity so if you turn on all the LEDs it's not a particularly tinted white.
Please note! These panels are remainder stock from factories that make huge light boards. For that reason, the look and size might vary from batch to batch, even though the basic operation, codebase and tutorial is the same.
We don't have a spec or datasheet at this time. However, these are the specifications from the factory
Dimensions: 190.5mm x 190.5mm x 14mm / 7.5" x 7.5" x 0.55"
Panel weight with IDC cables and power cable: 357.51g
5V regulated power input, 4A max (all LEDs on)
5V data logic level input
2000 mcd LEDs on 6mm pitch
1/16 scan rate
Indoor display, 150 degree visibility
Displays are 'chainable' - connect one output to the next input - but our Arduino example code does not support this yet