16 x 32 LED Matrix mit 512 RGB LEDs.
Die Matrix enthält keinen Controller, deshalb ist eine externe Steuerung nötig.
Adafruit stellt ein Beispiel für die Verwendung eines Arduinos zur Verfügung.
Bring a little bit of Times Square into your home with this 16 x 32 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 512
bright RGB LEDs arranged in a 16x32 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 1:8 scan rate.
These displays are '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!
These panels require 12 digital pins (6 bit data, 6 bit control) and a good 5V supply, up to 1A per panel. We suggest our 2A regulated 5V adapter
and then soldering a jack on such as from our extension cord
. Please check out our tutorial for more details!
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 9-bit color (512 colors) with 50% 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
its not a particularly tinted white.
Of course, we wouldn't leave you with a datasheet and a "good luck!" 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!
On an Arduino,
you'll need 12 digital pins, and about 800 bytes of RAM to buffer the
9-bit color image. At this time we do not have wiring documentation for
the MEGA, but we will update our tutorial in the next week to add MEGA
We don't have a spec or datasheet at this time. However, these are the specifications from the factory
- Dimensions: 192mm x 96mm x 12mm (7.6" x 3.8" x 0.5")
- Panel weight with IDC cable and power cable: 170 g
- 5V regulated power input, 1A max (all LEDs on)
- 3-5V data logic level input
- 2000 mcd LEDs on 6mm pitch
- 1/8 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