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[제품노트_U-HUB V1] 아두이노 코어, 허브-모듈
Description of U-HUB V1 hub-module

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[제품노트_BLUE-ON V1] 저전력 블루투스 모듈 2편 "안드로이드 무선 시리얼 전송"
Connecting APPSKIT with an android phone via Bluetooth Low Energy

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[제품노트_TEMP-ON V1] I2C 온습도센서 모듈
I2C Temperature sensor, AM2320, TMP36 Sensor

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[제품노트_LED-ON V1] I2C LED 모듈
I2C LED module for arduino

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[제품노트_SW-ON V1] I2C 푸시버튼 스위치 모듈_1편 "기본 사용법"
I2C Push button switch for Arduino