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ESP32ã®I2Sãƒžã‚¤ã‚¯ç ”ç©¶ ãã®1 基礎
アナãƒã‚°ãƒžã‚¤ã‚¯ M5Stack Fireãªã©ã«æŽ¥ç¶šã•ã‚Œã¦ã„るマイクã§ã™ã€‚接続ã—ãŸãƒžã‚¤ã‚¯ã‚’ESP32ã®å†…蔵ADCを利用ã—ã¦ã€å®šæœŸçš„ã«ã‚µãƒ³ãƒ—リングã—ã¾ã™ã€‚I2S経由ã§æŽ¥ç¶šã™ã‚‹ã“ã¨ã§ã€å®šæœŸçš„ãªã‚µãƒ³ãƒ—リングã¾ã§ESP32ãŒå‡¦ç†ã—ã¦ãã‚Œã¾ã™ã€‚ アナãƒã‚°ã¯ADCを定期的ã«å‹•ã‹ã™ã ã‘ãªã®ã§ã€è¨å®šã¨æŽ¥ç¶šãŒã‹ã‚“ãŸã‚“ã§ã™ã€‚ãŸã¶ã‚“モノラル録音ã—ã‹ã§ãã¾ã›ã‚“。 高感度マイクアンプã‚ット 秋月ã•ã‚“ã ã¨ä¸Šè¨˜ã¿ãŸã„ãªã®ã§ã—ょã†ã‹ï¼Ÿ 一般的ãªãƒžã‚¤ã‚¯ã«ã‚¢ãƒ³ãƒ—を接続ã—ãŸã‚‚ã®ã«ãªã‚‹ã¨æ€ã„ã¾ã™ã€‚ PDMマイク M5StickCã‚„ATOM Echoãªã©ãŒæŽ¡ç”¨ã—ã¦ã„るマイクã§ã™ã€‚I2Sã¨ã¯é•ã„ã¾ã™ãŒã€1ビットã‚ãŸã‚Š64ã‚‚ã—ãã¯128周期ã®PWMã¿ãŸã„ãªä¿¡å·(シグマデルタ)ã§å¼·å¼±ã‚’通信ã—ã¾ã™ã€‚ PDMã¯ã‚¯ãƒãƒƒã‚¯å…¥åŠ›ã‚’WSã«ã„ã‚Œã¦ã€DAT端åã‹ã‚‰ä¿¡å·ãŒã§ã‚‹ã®ã§ESP32ã§å—ä¿¡ã•ã›ã¾ã™ã€‚PDMマイクã«L・Ré¸æŠžç”¨ã®ãƒ”ンãŒã‚ã‚‹ã®ã§ã€VDDã«
Flipper Zero — Portable Multi-tool Device for Geeks
Flipper Zero is a portable multi-tool for pentesters and geeks in a toy-like body. It loves hacking digital stuff, such as radio protocols, access control systems, hardware, and more. It's fully open-source and customizable, so you can extend it in whatever way you like. The idea of Flipper Zero is to combine all the hardware tools you'd need for exploration and development on the go. Flipper was
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