Video Overlay Shield

The Arduino compatible shield board overlays text on analog video, using the Maxim MAX7456 on-screen display chip. This board allows easy overlay of text onto an analog video signal, NTSC or PAL. Connect this board to your favorite Arduino processor board to get started.

 

Features

• Overlays text on NTSC or PAL video
• Generates internal video in NTSC or PAL mode when no input video is connected
• 256 user-defined characters or pictographs in EEPROM
• 12 x 18 pixel character size
• Test points for video loss, video horizontal sync, video vertical sync, and clock output
• Input voltage 5V
• Dimensions: 2.7″x 2.1″

Documents

• Getting started with the VideoOverlayShield (wiki)
• Schematic and layout files in gEDA format (zip file)
• Schematic in PNG format
• Layout in PNG format
• Bill of materials
• MAX7456 datasheet from Maxim