videochargen/README.md

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# 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 ☺)
2022-09-29 20:16:03 +00:00
<img alt="Example image with drawings" src="scrot/02.png" style="max-width: 10cm;"><img alt="Example image with text" src="scrot/01.png" style="max-width: 10cm;">
## 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 |