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| — | projects:rgb-tetris-wall [2019/06/02 13:31] – created rey | ||
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| + | # RGB-Tetris-wall: | ||
| + | LED-based pixel wall for animations and tetris visualisation. Provides 16x24 RGB pixels on 80x120cm. LEDS are controlled with an Arduino, a Raspi provides input from arbitrary image or stream inputs including showing live Tetris games from NES input. | ||
| + | * Github repo: https:// | ||
| + | |||
| + | | | ||
| + | - 12V power supply (HP 750W HSTNS-PL18), | ||
| + | - Arduino Mega | ||
| + | - Raspberry PI 3 B | ||
| + | - EasyCAP USB grabber with Syntek STK1160 chip set | ||
| + | - Microphone: line in, perhaps with amplifier Iduino SE019 | ||
| + | - Switches, Buttons, Photo-resistor, | ||
| + | - Case made from HDF, with cells of size 5x5x5cm, top layer is Transparenzpapier + 3mm clear acrylic | ||
| + | |||
| + | | | ||
| + | |||
| + | ## Software: | ||
| + | |||
| + | ### Arduino: | ||
| + | |||
| + | Purpose: direkt control of all LEDs via the FastLed library. | ||
| + | - controlled via buttons: mode (animations, | ||
| + | - adaptive brightness via a photo-resistor (with voltage divider via 5k1ohm resistor for input pulldown) | ||
| + | - annimations: | ||
| + | |||
| + | Communication with Raspi: | ||
| + | - SPI, 487500 bps | ||
| + | - Arduino sets sync_pin if ready for receiving data. | ||
| + | |||
| + | Libraries (C): | ||
| + | - https:// | ||
| + | - https:// | ||
| + | - SPI | ||
| + | |||
| + | ### Raspberry PI: | ||
| + | |||
| + | Purpose: Proprocessing streams of input images, beat detection, NES tetris streams, and pixelflut. | ||
| + | - Image processing: cycles through all images that are located in /images | ||
| + | - Beat detection: Microphone measures sound for simple beat detection that can get visualised | ||
| + | - NES Tetris stream: reads the composite signal of an NES via the Syntek STK1160 grabber. All frames are analysed for the content of the Tetris game: game state, next block, score, level, number of lines | ||
| + | - Pixelflut (tm) | ||
| + | |||
| + | NES Tetris stream: | ||
| + | - NTSC or PAL possible | ||
| + | - 12-15 fps feasible | ||
| + | |||
| + | Libraries (python): | ||
| + | - base64 | ||
| + | - numpy | ||
| + | - Pillow | ||
| + | - pigpio | ||
| + | - pyserial | ||
| + | - PyV4L2Camera | ||
| + | </ | ||
Last modified: 2019/11/25 11:01