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 they see them on the sides of busses and bus stops, to display animations or short video clips. Adafruit thought they looked really cool so they picked up a few boxes of them from a factory.
These are a lot like Adafruit's 6mm Grid 32x32 RGB LED matrix panel, but The LEDs on this panel are also a little closer together (a 5mm grid) so you won’t have to stand as far away to appreciate it. They are made to look good indoors, even with a wide-angle view (160 degrees) and look great in ambient light.
These matrices have 1024 bright RGB LEDs arranged in a 32x32 grid on the front. On the back there is a PCB with two IDC connectors (one input, one 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 Adafruit's Arduino example code does not support this (yet). It requires a high speed processor and more RAM than the Arduino has!
These panels require 13 digital pins (6 bit data, 7 bit control) and a good 5V supply, up to 4A per panel. Adafruit suggest Adafruit's 4A regulated 5V adapter and then connecting a 2.1mm jack. Please check out Adafruit's tutorial for more details!
- A single 32x32 RGB panel,
- An IDC cable
- A power cable
- Adafruit 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, they 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.
Of course, they wouldn't leave you with a datasheet and a "good luck!" Adafruit have a full wiring diagrams and working Arduino library code with examples from drawing pixels, lines, rectangles, circles and text. You'll get your color blasting within the hour! On an Arduino, you'll need 16 digital pins, and about 1600 bytes of RAM to buffer the 12-bit color image. At this time they do not have wiring documentation for the MEGA.
- Dimensions: 167.6mm x 167.6mm x 14.3mm / 6.56” x 6.56” x 0.56”
- Panel theyight with IDC cables and power cables: 218.82g
- 5V regulated power input, 4A max (all LEDs on)
- 5V logic
- 2000 mcd LEDs on 5mm pitch
- 1/16 scan rate
- Indoor display, 160 degree visibility
- Displays are 'chainable' - connect one output to the next input - but Adafruit's Arduino example code does not support this yet
- We have a full wiring diagrams and working Arduino library code with examples from drawing pixels, lines, rectangles, circles and text. You'll get your color blasting within the hour!
- We have a full tutorial here!
- Raspberry Pi LED Matrix Display
- Adafruit RGB Matrix + Real Time Clock HAT for Raspberry Pi
- 32x16 and 32x32 RGB LED Matrix