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Picture of Mirolo Networked LED Matrix Display for Digital Signage

Digital signage can be useful at events to inform visitors about upcoming panels, changes in the schedule or dynamically provide information. Using LED Matrix displays for that makes the messages readable even from far away and is an eye catching feature.

Features include:

  • 2 Lines of dot matrix modules, 1 RGB Ring indicator
  • http web interface for simple fallback management
  • REST/JSON API for advanced remote management
  • automatic brightness control
  • IR remote control
  • I²C interface connector for external modules (e.g. DS1307 RTC)
  • wide range power input: 10-20VAC/10-30VDC
  • message board and event schedule modules for network independent manual operation

The following instructions will go over the process of building one of these displays with both the electronics and supporting frame in mind. The build process requires some specialized tools and advanced soldering skills. Therefore I'd describe the difficulty level as medium-hard and not suited for beginners.

The full documentation on the software and hardware can be found at gitlab/mirolo-2M05081R16

Step 1: What You Need

You will need a variety of tools to complete this project. This is the basic set. Any tools like CNC machines or belt sanders and drill stands will make your life a lot easier.

  • Soldering Station including tips capable of soldering SMD components
  • De soldering equipment
  • Power Drill
  • Hot Glue Gun
  • Reciprocating Saw and metal saw blades
  • Pliers
  • Screwdrivers
  • Wrenches and Sockets
  • Multi Meter
  • Tap and Die
  • Countersink Drills
  • Drillset
  • Vice
  • Handsaw
  • Two Component Glue
  • Sandpaper
  • Metal File
  • Double Sided Tape

Of course you also need building material. You can find a full list of all the parts needed here: Material List

Important: When buying components like Electrolytic Capacitors make sure their height does not exceed 12mm. Otherwise they will be higher than the matrix display and the board won't fit properly.