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【UCI電子】(中) Arduino 全相容 UNO R3 開發板 ATMega16U2【送USB線】UNO R3

【UCI電子】(中) Arduino 全相容 UNO R3 開發板 ATMega16U2【送USB線】UNO R3

NT$230
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Description

UNO R3是2012最新推出的一款易用型開源控制器,硬件上與UNO相比並沒有大的變動,

最大不同在於USB轉串口電路部分,改用的 是一塊ATMega16U2單片機,

由此成本也有所提高,軟件部分與之前一樣,沒有大的變化。


功能:

1. 針腳變動: 在AREF針腳旁加了倆I2C針腳(SDA和SCL,只是Analog 4和5的copy,並不是額外的I2C接口), 另外,在RESET旁邊也加了兩個針腳,一個是 IOREF,能讓擴展板適應板載電壓,這個針腳只是告訴擴展板目前的板載電壓是多少(比如UNO是5V,可以看成電源針腳的copy,並不提供電平上 拉),另一個是以後待用的占位針腳。

2. 更穩定的RESET電路。RESET鍵位置也變了,被移到了靠近USB接口的板角處,更方便按。

3. ATmega16U2代替了8U2,這並不意味著有16K flash的R3能讓你的code跑的更快,這個更新為是USB接口芯片服務的,理論上它讓UNO能模擬USB HID,比如 MIDI/Joystick/Keyboard

 

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