# 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 ☺)

## 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               |

## Images
<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;">
<img alt="Hardware device" src="scrot/device.lq.jpeg" style="max-width: 10cm;">