Back to Arduino Step By Step Course
If you don't like to see ads while video is being played you can purchase this course for $200 from Udemy or purchase YouTube premium Here
Please download required files for this code
In this lesson we learn how to use BMP280 to measure temperature and display it on TM1637 There is separate code for LCD2004 and LCD1602.
/*
* Robojax Arduino Step By Step Course
* Part 3: Temperature Sensors
* Lesson 31 BMP280 with TM1637
Please watch video instruction here https://youtu.be/efTu0YjWkXY
This code is available at http://robojax.com/course1/?vid=lecture11
with over 100 lectures Free On YouTube Watch it here http://robojax.com/L/?id=338
Get the code for the course: http://robojax.com/L/?id=339
If you found this tutorial helpful, please support me so I can continue creating
make donation using PayPal http://robojax.com/L/?id=64
Written/update by Ahmad Shamshiri in Ajax, Ontario Canada.
* Code is available at http://robojax.com/learn/arduino
* This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.*
* This code has been download from Robojax.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/***************************************************************************
This is a library for the BMP280 humidity, temperature & pressure sensor
Designed specifically to work with the Adafruit BMEP280 Breakout
----> http://www.adafruit.com/products/2651
These sensors use I2C or SPI to communicate, 2 or 4 pins are required
to interface.
Adafruit invests time and resources providing this open source code,
please support Adafruit andopen-source hardware by purchasing products
from Adafruit!
Written by Limor Fried & Kevin Townsend for Adafruit Industries.
BSD license, all text above must be included in any redistribution
***************************************************************************/
#include <math.h>
#include <Wire.h>
#include <SPI.h>
#include <Adafruit_BMP280.h>
#define BMP_SCK (13)
#define BMP_MISO (12)
#define BMP_MOSI (11)
#define BMP_CS (10)
Adafruit_BMP280 bmp; // I2C
//Adafruit_BMP280 bmp(BMP_CS); // hardware SPI
//Adafruit_BMP280 bmp(BMP_CS, BMP_MOSI, BMP_MISO, BMP_SCK);
// start of settings of TM1637 display
#include <Arduino.h>
#include <TM1637Display.h>
// Module connection pins (Digital Pins)
#define CLK 5
#define DIO 6
TM1637Display display(CLK, DIO);
uint8_t blank[] = { 0x0, 0x0, 0x0, 0x0 };// blank value for all digits
uint8_t allSegment[] = { 0xff, 0xff, 0xff, 0xff };// all segment ON
// start of settings of TM1637 display
void setup() {
Serial.begin(9600);
Serial.println("BMP280 demo by Robojax");
display.setBrightness(0x0f);
if (!bmp.begin()) {
Serial.println("BMP280 Module Error");
while (1);
}
}
void loop() {
// Robojax example Get the code for the course: http://robojax.com/L/?id=339
Serial.print(getTemp('C'));// print Temperature in Celsius
Serial.println(" C");// print C
Serial.print(getTemp('F'));// print Temperature in Celsius
Serial.println(" F");// print F
Serial.print(getTemp('K'));// print Temperature in Kelvin
Serial.println(" K");// print K
Serial.println();
display.setSegments(allSegment);
delay(3000);
display.setSegments(blank);
display.showNumberDec(round(getTemp('C')));
delay(3000);
display.setSegments(blank);
display.showNumberDec(round(getTemp('F')));
delay(3000);
display.setSegments(blank);
display.showNumberDec(round(bmp.readAltitude(1013.25)));
delay(3000);
delay(1000);
}// loop end
/*
* Written by Ahmad Shamshiri
* Jan 22, 2019 in Ajax, Ontario, Canada
* getTemp(char type)
* returns temperature in either C, F or K
* @param type is character of upper case
* C is used to get Celsius
* F is used to get fahrenheit
* K is used for Kelvin
* Written by Ahmad Shamshiri for Robojax.com
*
*/
float getTemp(char type) {
float c = bmp.readTemperature();//get main temperature in C
float f = c * 9.0 / 5.0 + 32;// convert to fahrenheit
if(type =='F')
{
return f;// fahrenheit
}else if(type =='K')
{
return c + 274.15;// return Kelvin
}else{
return c; //return Celsius
}
}//getTemp ends
The least I expect from you is to thumb up the video and subscribe to my channel. I appriciate that. .I have spent months making these lectures and writing code. You don't lose anything by subscribging to my channel. Your subscription is stamp of approval to my videos and more people can find them and in it turn it helps me. Thank you
If you found this tutorial helpful, please support me so I can continue creating content like this. support me via PayPal 
**** AFFILIATE PROGRAM **** We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.