channel3
ESP8266 Analog Broadcast Television Interface
...An antenna connected to the output can transmit a signal receivable by an analog television tuned to Channel 3. The implementation produces luma and color information through carefully constructed one-bit modulation patterns. Several demonstration screens show text, graphics, color swatches, lines, and simple 3D scenes. A browser interface lets users select demos and experiment with generated modulation patterns. The project also includes experimental PAL support and documentation explaining its unusual RF and video-generation techniques.