Build an Arduino in a breadboard

 arduino_standalone

IC-ATMEGA328-PU_02_LRG

This tutorial explains how to migrate from an Arduino board to a standalone microcontroller on a breadboard.

Wiring Instructions

To wire ATmega328 to your project, connect the following pins:

  • ATmega328 Pin 9 –> Crystal Pin 1 –> Ceramic Capacitor 22pF Pin1 (1st Capacitor)
  • ATmega328 Pin 10 –> Crystal Pin 2 –> Ceramic Capacitor 22pF Pin1 (2st Capacitor)
  • The other Pins of Capacitor to GND
  • ATmega328 Pin7 –> +5V
  • ATmega328 Pin20 –> +5V
  • ATmega328 Pin21 –> +5V
  • ATmega328 Pin8 –> GND
  • ATmega328 Pin22 –> GND

To wire Reset button to your ATmega328, connect the following pins:

  • ATmega328 Pin 1 –> Push Button Pin 1
  • GND –> Push Button Pin 2
  • Resistor 10K from ATmega Pin 1 to +5V
  • Capacitor 100nF from ATmega Pin 1 to DTR (FTDI Pin)

Recommended Software

  • none

Instructions and Code

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