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Notify me when its in stockThis is a 32x32 grid of bright RGB LEDs with a 4mm pitch. On the back, there are two sets of IDC connectors (two inputs and two outputs: theoretically, you can chain them together) and a PCB with 12 16-bit latches that allow you to run the display at a 1:16 scan rate.
These panels require 13 digital pins (6 bits for data, 7 bits for control) and a solid 5V power supply capable of providing up to 4A per panel.
Please note that these displays are designed to be driven by FPGAs or other high-speed processors; they do not have built-in PWM control. Instead, you'll need to redraw the screen over and over to 'manually' PWM the whole thing. On a 16MHz Arduino, we managed to squeeze 12-bit color (4096 colors) but this display would really shine if driven by an FPGA, CPLD, Propeller, XMOS, or other high-speed multi-core controller. Good news is that the display has a beautiful front color balance, so you can use it for colorful effects!
To buffer all the 12-bit color data, you'll need 13 digital pins and about 1600 bytes of RAM. You can't use this size display with an Arduino UNO (ATmega328) or ATmega32u4 - not enough RAM.
These panels are technically 'chainable' - connect one output to the next input - but the example code and libraries are not set up to deal with that yet.
Keep in mind! These panels are salvaged from big displays, we don't know the exact panel brand or type as they have no markings on them. We cannot guarantee that multiple panels can be tiled together since they come from a grab bag.
You can find competitive and affordable 32x32 RGB LED matrix panels with a 4mm pitch in the Adafruit category at SAMM Market for your project needs.
