การส่งข้อมูลระหว่าง Arduino 2 ตัว ด้วย Serial Port - สามารถ โปรเจ็ค : Inspired by LnwShop.com
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What is TX and RX on Arduino
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Arduino】SoftwareSerial を使って、複数のデバイスとシリアル通信を行う - とある科学の備忘録
