In this small DIY project, we show you how to Interface OLED display as an output device to LinkIt board, as well as explain you how to use third party libraries and import them in Arduino IDE.
We show you 5 easy steps to interface the hardware and simple steps to code. We are also explaining the code to you to understand each every line, what it means so that even the newbie programmers can also understand the logic.If you would like to see any improvements in the video series, please do let us know in comments section.
Follow the video guide to build an OLED display for real-time ambient temperature display using MediaTek LinkIt.
Internet of Things Series - Part 4 - OLED Display to show temperature
Arduino code for OLED Display for Temperature sensor
Arduino
/*******************************************************
* SANTRONIX <info@santronix.in>
*
* This file is part of SANTRONIX Mediatek LinkIt Tutorials Project.
*
* SANTRONIX Mediatek LinkIt Tutorials Project can not be copied and/or distributed without the express
* permission of SANTRONIX
*******************************************************/
#include <math.h>#include <Wire.h>#include <SeeedOLED.h>#include <avr/dtostrf.h>const int B=4250; // B value of the thermistor
const int R0=100000; // R0= 100k
const int pinTempSensor= A0;void setup(){ // put your setup code here, to run once:
Serial.begin(9600); Wire.begin(); SeeedOled.init(); //initialze SEEED OLED display
SeeedOled.clearDisplay(); //clear the screen and set start position to top left corner
SeeedOled.setNormalDisplay(); //Set display to normal mode (i.e non-inverse mode) SeeedOled.setPageMode(); //Set addressing mode to Page Mode
}void loop(){ int a= analogRead(pinTempSensor); float R=1023.0/a-1.0;R= R0*R; float temperature=1.0/((log(R/R0)/B)+(1/298.15))-273.15; // convert to temperature via datasheet
//Serial.print("temperature = "); //Serial.println(temperature); SeeedOled.setTextXY(0,0); //Set the cursor to Xth Page, Yth Column
SeeedOled.putString("Temperature"); //Print the String
SeeedOled.setTextXY(2,0); //Set the cursor to Xth Page, Yth Column
SeeedOled.putFloat(temperature,2); SeeedOled.putString(" C"); delay(1000);}
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