Check out a collection of instruments for LED designing and enhancement. Work with tools for building customizable test patterns with selected LED components, replace and resize individual elements, check the live output with moving cursors, multiple grids, offset markers, etc.
Downloading pixl Grid 2.198 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The program is included in Design & Photo Tools. We recommend checking the downloaded files with any free antivirus. The actual developer of this free Mac application is Video Walrus Ltd.
From the developer:
pixl Grid is a LED test pattern generator. This application is designed to help you save PNG grids for custom-sized LED screens. The tool provides you with live output with moving cursors, multiple grids in one canvas, and offset markers. The utility supports many different color palettes.
You may want to check out more Mac applications, such as Access Grid, Grid Calculator Basic Edition or Grids, which might be similar to pixl Grid.