Lesson 20: Using TM1637 4 digit display
Please select other codes for this lecture from the links below.
Related or required files and link to this lesson
Part 2: LCD, LED and OLED Screens
In this lecture we learn how to use TM1637 four digit seven segment display to display integer and
hexadecimal vlaues. Decimal point can't be dispalyed easily.
A counter example which counts from 0 is shown.
/*
* Robojax Arduino Step By Step Course
* Lesson 20-2 Introduction to TM1637 4 digits LED Display
This is counter code.
*
* This code has been modefied from the Arduino library
Please watch video instruction here https://youtu.be/cJqmXjERwkQ
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
* Updted by Ahmad Shamshiri for Robojax
* in Ajax, Ontario, Canada
*
* 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/>.
*/
#include <Arduino.h>
#include <TM1637Display.h>
// Module connection pins (Digital Pins)
#define CLK 5
#define DIO 6
// The amount of time (in milliseconds) between tests
#define TEST_DELAY 15000
uint8_t allDigits[] = { 0xff, 0xff, 0xff, 0xff };
uint8_t blank[] = { 0x0, 0x0, 0x0, 0x0 };// blank value for all digits
TM1637Display display(CLK, DIO);
void setup()
{
display.setBrightness(0x0f);
}
void loop()
{
// count up to 2000
for(int i=0; i<=2000; i++)
{
display.showNumberDec(i);
}
delay(3000);
// count down from 1700 to zero
for(int i=1700; i>=0; i--)
{
display.showNumberDec(i);
}
delay(5000);
display.setSegments(blank);
display.showNumberDec(125, false, 3,1);
delay(TEST_DELAY);
display.setSegments(blank);
display.showNumberDec(384,true);
delay(TEST_DELAY);
display.setSegments(blank);
display.showNumberDec(736,false);
delay(3000);
display.setSegments(blank);
display.showNumberDec(153, false, 3, 1);
delay(TEST_DELAY);
display.setSegments(blank);
display.showNumberDec(22, false, 2, 2);
delay(TEST_DELAY);
display.setSegments(blank);
display.showNumberDec(0, true, 1, 3);
delay(6000);
display.setSegments(blank);
display.showNumberDec(0, true, 1, 2);
delay(3000);
display.setSegments(blank);
display.showNumberDec(0, true, 1, 1);
delay(3000);
display.setSegments(blank);
display.showNumberDec(0, true, 1, 0);
delay(3000);
while(1);
}
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