by default, we'll generate the high voltage from the 3.3v line internally! (neat!)ĭisplay.begin(SSD1306_SWITCHCAPVCC, 0x3D) // initialize with the I2C addr 0x3D (for the 128圆4)ĭisplay. #define button2 8 // Button B2 is connected to Arduino pin 8

#define button1 9 // Button B1 is connected to Arduino pin 9 #include // Include Adafruit SSD1306 OLED driver #include // Include Adafruit graphics library #include // Include Wire library (required for I2C devices) Arduino real time clock and temperature monitor with DS3231 and SSD1306 OLED The SSD1306 OLED used in this project is configured to work in I2C mode, some SSD1306 OLED boards may require a small hardware modifications (to select between SPI mode or I2C mode) such as soldering, placing jumpers … If you are new to Arduino like I am then Visuino can be a useful tool 32383 views 6 respects. Interfacing Arduino with SSD1306 OLED displayĪrduino real time clock using DS1307 and SSD1306 OLED If you are new to Arduino like I am then Visuino can be a useful tool Display Time Date-I2C LCD and DS3231 Real Time Clock-Visuino. In the circuit there are two push buttons for setting time and date of the real time clock. The DS3231 RTC address is 0圆8 (the same address with the DS1307) and the SSD1306 OLED address is 0x3D. Even they share the same bus but at any time the microcontroller ‘speaks’ with 1 device only depending on the address sent. That means the DS3231 and the SSD1306 OLED screen share the same I2C bus. It also uses I2C interface to communicate with the master device which is in this case the Arduino. It also (the DS3231) keeps the time running if the main power source is down. The DS3231 is more accurate than the DS1307 due to its built-in temperature sensor. In the last post I built an Arduino based real time clock using DS1307 RTC and SSD1306 OLED and in this project I’m going to show how to build a real time clock with temperature monitor using Arduino, DS3231 RTC chip and SSD1306 OLED (128×64 pixel).

Arduino i2c real time clock