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Amazon.com: 3.3V 5V 8 Bit BlueCommon Anode/Cathode LED Indicator Module DIY kit for Arduino Nano UNO Raspberry pi 4 nodemcu Eletechsup (Common Anode, with pin, 1) : Electronics
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NANO V3 Industrial 3.3V/5V Logic, CH340C, ATMega168/328, USB B, w/o Pinheaders or Soldered (Arduino compatible board)|Integrated Circuits| - AliExpress
![The documentation for the Nano 33 IoT states that there is a 3.3 jumper on the bottom... · Issue #9775 · arduino/Arduino · GitHub The documentation for the Nano 33 IoT states that there is a 3.3 jumper on the bottom... · Issue #9775 · arduino/Arduino · GitHub](https://user-images.githubusercontent.com/54281771/75137473-b15bdb80-570d-11ea-8fbf-44fe65cf5108.png)