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Video image generator superimposition for analog PAL signals, with Atmega328, for your retro OSD titles https://retrofficina.glgprograms.it/
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README.md

Video Character Generator

Atmel-AVR based electronic text/image superimposition device, for analog PAL video.

(don't tell anyone, but, since it is B/W, should work for SECAM and NTSC too ☺)

Example image with drawingsExample image with text

Quick start

  1. Prepare your slides in B/W PBM format
  2. g++ frame.cpp -o frame
  3. ./frame image1.pbm [image2.pbm...]
  4. plug your Atmel programmer
  5. make flash

PIN Settings

PORT PIN dir description
PD2 4 IN vertical sync
PD3 5 IN horizontal sync
PB2 16 IN transition mode
PB3 17 IN next image button
PB4 18 OUT white dot output
PB5 19 OUT led