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diymore 5pcs Redesign Pro Mini ATmega328P 3.3V 8M Module Board with Crystal Oscillator Pins Compatible with Nano Arduino Replace ATmega128 : Amazon.ca: Electronics
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Amazon.com: Weewooday 6 Pieces Nano Board V3.0 ATmega328P Without Cable Compatible with Arduino Nano V3.0 with Pin Headers Pin Unsoldered : Electronics
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Amazon.com: KOOKYE 3PCS Pro Micro ATmega32U4 5V/16MHz Module Board 2 Row Pin Header for Arduino Mini Leonardo : Electronics