| Parola for Arduino 1.0 Text effects for Parola modular hardware

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Parola Hardware

## Design

The aim was to create a 'lego-like' approach to LED matrix display, using standard 8x8 on LED matrices. The software supports this flexibility through a scalable approach that only requires the definition of the number of modules to adapt existing software to a new configuration.

Completed Parola module with and without the LED matrix

## Circuit Schematic

The schematic is the basic application circuit that is found on the MAX7219 datasheet, adapted to the LED matrix. Each Parola Module consists of an 8x8 LED Common Anode matrix controlled by a MAX7219 LED controller and a few passive components. These controllers can be daisy chained, making them ideal for the purpose.

Parola Circuit Schematic

## PCB Design

The PCD design was executed using the autorouting facility in Eagle CAD, and the PCB was manufactured by SeedStudio. The Eagle CAD files for the layout and the Gerber files suitable for SeedStudio are found on the Parola website. The final design includes edge connections that allow many modules to be connected together into an extended display, one LED module in height.

PCB layout ready for manufacture