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5pcs 2 in 1 DC 3V 3.3V 3.7V 6V 9V 12V to 5V DC/DC Boost-Buck Converter Power Supply Module for Arduino UNO Nano DUE AVR STM32 [DD2412SA_5V*5] - USD $12.99 : canton-electronics.com
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2pcs Dc 3.3v 5v 12v 6bits Multicolor Rapid Prototyping Led 2.54mm Pin 0603 Package For Arduino Uno Mega2560 Lol Breadboard Pcb - Led Displays - AliExpress
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