How to make Calculator Arduino project

Hello!! In this tutorial I will try to show you how to make this simple calculator. I will use ATmega 328p microcontroler. I will borrow MCU from Arduino UNO. So we will make Arduino on perf board.
This calculator has only simple functions (+, -, *, /), it supports decimal numbers and it can be reprogram or modify as you want. This video will be longer than usual because I will try to give you detailed instructions how to build and program this calculator.

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Components:
2x 5x7 cm perf board
AtMega328P borrowed from Arduino Uno
128x32 I2C OLED display
16Mhz crystal oscillator
100nF capacitor
2x 22pF capacitor
17x 2 pin push button
LED
Switch
1K resistor for LED
10K pullup Resistor
3.7V battery

Adafruit GTX library
https://github.com/adafruit/Adafruit-...
Adafruit OLED library
https://github.com/adafruit/Adafruit_...

Code:
https://drive.google.com/open?id=1yDo...

#ArduinoCalculator