4X4 Keypad Input Display Through OLED
DESCRIPTION
In this tutorial basically we're going to learn how to take input from keypad and show it on our desired OLED display. For this i would suggest you see my other tutorials as prerequisite Kepad Tutorial and OLED Display Tutorial
If you miss these tutorial you might not be able to do this.
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Including Library:
Both libraries below needs to be installed before you are able to continue with this instructable.
https://github.com/adafruit/Adafruit_SSD1306 (SSD1306 library)
https://github.com/adafruit/Adafruit_SSD1306 (GFX library)
The connections from the display:
VCC to arduino 5v GND to arduino GND SCL to arduino pin A5 SDA to arduino pin A4
Library Correction :
For Adafruit_SSD1306 Library:
Go to: C:\Program Files (x86)\Arduino\libraries\Adafruit_SSD1306 Open Adafruit_SSD1306.h (in a text editor like Notepad++ for example) Find and comment out the line: #define SSD1306_128_32 Uncomment the line: #define SSD1306_128_64 Open the ssd1306_128x64_i2c example in Arduino: Change address from 0x3D to 0x3C in void setup()
Connecting keypad with aruduino digital pins:
Keypad Pin Connects to Arduino Pin
1 D9
2 D8
3 D7
4 D6
5 D5
6 D4
7 D3
8 D2
Connecting OLED with aruduino Analog pins:
VCC to arduino 5v GND to arduino GND SCL to arduino pin A5 SDA to arduino pin A4.
you can find a more clear tutorial and also the code below the link:
