Questions tagged [7-segment]

It refers to a seven-segment display (SSD) is a form of electronic display device for displaying decimal numerals.

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Help with object counter

I'm pretty new to all this. So, here's what I'm trying to do: I want to count how many pieces fall into a box using an IR sensor (vester pmi-20-20/p). Once a certain number is reached, I want to ...
Lina's user avatar
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TM1637 Decimal points

I am using the following TM1637 board with an Arduino Pro Micro clone. I am attempting to use the "TM1637Display Library" written by Avishay Orpaz, but I cannot find any way to use the four ...
LesRhorer's user avatar
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How to create 2 individual daisy chains using the MAX7219 Module and Mega2560

I am using MAX7219 8 digit 7 segment displays with Arduino Mega2560. Now, I have to physically space out the displays far from each other. Hence, after a certain distance the displays on the far end ...
Soumarya's user avatar
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332 views

4x TPIC6B595 + 4x 7 segment display

I am going to use 4x TPIC6B595 and 4x 7 segment display with common anode. Below You Can find vendor site of this display. https://sklep.avt.pl/wyswietlacz-led-2-30-57mm-zielony-wa.html Here is my ...
Krzychotnik's user avatar
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Arduino nano + 4x 7 segment display + 74HC595 - Only dot points are turn on

I am trying to run a thermometer with thermocouple sensor on Arduino Nano. I have bought 4x 7 segment display and 74HC595 chip. Everything is connected like in the attached diagram below (without ...
Krzychotnik's user avatar
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1 answer
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Arduino uno - 4digit 7seg display via 74HC595 keeps blinking

I am trying to get my 4 digit display (SH5461AS) count from 0 to 9 based on millis() function. The problem is that it keeps blinking. Even if I display just one number, it shows then it goes black ...
Ono Tosamo's user avatar
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2 answers
206 views

Arduino MEGA - How to send and receive data asynchronously?

i am newbie to this so i hope i can explain my problem clearly; Arduino MEGA connected to PC via USB port. I am using an encoder to trigger function to send data to pc, data is a simple string "...
Nocturnale's user avatar
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Connecting Common-Anode Seven Segment Display to Shift Register

I recently wired up the following ill-advised circuit: A common-anode display is wired with its cathodes connected directly to LEDs connected to ground. But the strange thing is that it worked ...
mwhea's user avatar
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7-Segment Display w/ Potentiometer

(Backstory) So, I took an computer engineering class in high school (grade 11 level), where I learned a bit about breadboarding as well as arduinos (I would like to stress a bit). It has been 5 years, ...
Dezter's user avatar
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Using 4-digit 7-segment display on Arduino Nano

I want to merge two projects: a "Don't touch your face" hat for Nano and a 7-segment 4-digit display for Uno. I tested both independently and they work. I added an RGB LED to the first, so I ...
emonigma's user avatar
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How to write & read from SPIFFS file as object data on ESP8266

I am trying write four digit number to SPIFFS file, and read that four digit from SPIFFS file and display on seven segment. The code, I am writing as below, I got "0" on each segment, but if ...
Ali Morawej's user avatar
2 votes
1 answer
809 views

4 Digit 7 segment display flickering

I am attempting to make an Arduino counter using a 4 digit 7 segment display. The problem I am encountering is the display flickers. I am using an Arduino Uno and 5641AS digit display (so common ...
Sony's user avatar
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Library for working with a 4-digit 7-segment indicator SH5461AS

Good day. Tell me an excellent library for working with a 4-digit 7-segment indicator. I am currently using #include <fDigitsSegtPin.h> But it does not allow you to display letters, does not ...
Антон's user avatar
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7-segment displays are not working

/* MODIFIED TRAFFIC LIGHT SYSTEM W/ A COUNTDOWN TIMER FUNCTION BY JOHN SEONG THIS IS A QUITE ACCURATE SIMULATION OF TORONTO'S TRAFFIC LIGHT SYSTEM WHICH INCLUDES TWO 7-SEGMENT DISPLAYS THAT SHOW THE ...
John Seong's user avatar
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7 segment 4 digit not showing numbers 2,3 and 0

https://www.instructables.com/Using-a-4-digit-7-segment-display-with-arduino/ I used this link to make my circuit and I used this code also but some numbers like 2,3 and 0 doesn't display correctly.
Hasan's user avatar
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ATtiny85-DHT11-TM1637

I have tried many combinations and I can get the Attiny85 to display on the TM1637 just fine, but I cannot get ant readings from the DTH11, tried different pins, libraries. I upload code via UNO as ...
Jim Rodemeyer's user avatar
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2 answers
251 views

Interfacing unusual 4 digits 7 segments display

There is a common anode and common cathode of 7 segments display. But I got an unusual one. There are 7 pins controlling 4 digits 7 segments. I find the pinout by a multimeter. Basically, each pin ...
Allen Chak's user avatar
3 votes
1 answer
7k views

74HC595 to 4 Digit 7 Segment using SevSegShift Library

I have a question regarding the use of SevSegShift library. I followed the example properly and tested it to see if it works. It was able to power up the seven segments and light up the whole LEDs (...
fireblazer10's user avatar
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2 answers
136 views

TPIC6B595 Output Unable to Allow Supplied Power to 7-segment Display

We have an Arduino Nano connected to 4 small (0.5") common-anode 7-segment displays and 2 large (3") common-anode 7-segment displays. We are trying to multiplex the displays. The larger one ...
ReignOfComputer's user avatar
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Arduino and ZMPT101B But Not Stable Sigma Output In 7segment Display(TM1637) using filter library

#include <Arduino.h> #include <math.h> //TRUE RMS START #include <Filters.h> //Easy library to do the calculations #include <TM1637Display.h> float testFrequency = 100; ...
Shafaeit Hossain's user avatar
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3 answers
2k views

4-digit 7-segment display not showing value properly

I'm trying to add a 4-digit 7-segment display to an existing project (a temperature & relative humidity sensor) to show the temperature on the display. I bought the display a long time ago and I ...
foundationer's user avatar
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2 answers
1k views

delay() problem for 74HC595 and 7-segment

I'm trying to run a 3-digit 7-segment using single 74HC595 based on Arduino. But I have a serious problem with delay() function. When I want to count from 000 to 999 with delay(1000), this delay ...
soheil's user avatar
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How can I use multiple 7-segment displays in Tinkercad

I need to connect five 7-segment displays using Tinkercad. We know that Tinkercad doesn't have an Arduino Mega to use its pins. How can I do this without the Arduino Mega?
klay's user avatar
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Arduino Uno and 7 segment display - wrong value displayed

I am working at this project and I found that if I have set the temperature by rotating the pot to 312 C, the iron started heating up, but when it was at about 60 C then on the display (7 segment, 3 ...
beard999's user avatar
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2 answers
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displaying a 3 digit clock time on a 4 digit 7 segment display

I purchased one of these 4 digit 7 segment displays using a TM1637. I installed the TM1637 display library from the libraries manager and included it: (#include <TM1637Display.h>). I am ...
mheavers's user avatar
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Trouble with 4 digit 7 segment display

So I spent a bit trying to figure the wiring and I THOUGHT I had it working but something interesting happened. Displaying works for only the numbers 1, 3, 4, 7, 8, and 9, but are weird when it comes ...
SaucyCodes05's user avatar
1 vote
0 answers
114 views

Problem driving segment display

First off, I'm not really sure if it belongs here on on electronics stackexchange, since it involves an Arduino, some code and a small circuit. I'm trying to create a simple countdown timer using a 7 ...
gatukok's user avatar
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1 answer
499 views

number generator show wrong segments on 7 segment display

I created a program to show a random number on a 7 segment display. It shows a random number in the serial monitor but always shows the same segments 'a c d and g'. anyone know hopw to fix this ...
Bavo's user avatar
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How to add numbers to a position when controlling a seven-segment display

I'm recently having a hard time with my Arduino project. I'm trying to control a seven-segment display (it has a microcontroller on it) with an encoder, and I'm trying so that everytime I rotate the ...
OmerFlame's user avatar
1 vote
1 answer
476 views

Mapping segments and memory allocation on a segment LCD driver [closed]

I've just configured a segment LCD and driver, everything works fine, but because I decided to not use vias on the PCB, the connections between the two are mixed. To be more precise, in order to ...
Meepo's user avatar
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1 vote
2 answers
235 views

Matrix keyboard and 7segment display countdown combination

I'm working on an escape room for my university with an Arduino Mega. The last part consists of a 7segment display representing a time countdown, and the participants have to introduce the correct ...
Javier Romero.'s user avatar
-1 votes
1 answer
2k views

How to read Output data from SPI connector using Arduino Uno?

I am having main controller circuit board that give the data such as ("HAI", "HELLO") to 5 pin SPI Connector mounted on the same board. In that 5 pin SPI connector I could connect separate circuit ...
Abdulvakaf K's user avatar
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1 answer
375 views

4 digit 7 segments display wrong number

I'm an Arduino newbie having problems with 4 digit 7 segments display. I want to display some thousands to 4 digit 7 segments display but it display only 0000. I want to receive data from serial with ...
김태정's user avatar
1 vote
1 answer
622 views

7 segment multiple display, only display 1 digit

I try to create a display so that when I press the button, the counter is increased by one. The problem is only one of them light up and it is not showing the correct output, it is showing the ...
user50125's user avatar
0 votes
1 answer
707 views

Connect a TM1627 to ESP32

I want to control a 7 segment display that has a TM1637 integrated with an ESP32. Some time ago I created a layout that used an ESP12e but I need more GPIO pins so I'm switching over to an ESP32. ...
Tvde1's user avatar
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1 answer
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Flashing a specified digit 4x7 segment display and shift register 74HC595N

I have a project that is simply a relay timer. The code is not complete so you will see 'in progress' sections not related to my question in my code. However, my question is... I am creating a timer ...
Ashley Reid's user avatar
1 vote
1 answer
644 views

7-Segment, 3-digit display not displaying correctly

I have written the code that should work, but for some reason the numbers do not display correctly. When I choose to display 3 times the same number it works correctly (so pin connections are correct) ...
Sam's user avatar
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1 answer
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3 digit 7 segment display

I have 3 digit 7 segment display with 10 pins I found this image pinout but it not working for me I need to know the pin out of this display
Mina Nabil's user avatar
1 vote
1 answer
5k views

6 wire 3 digits 7 segment display and arduino question

Here's a brain teaser for you: I have the following 3 digit 7 segment display that has only 6 wires Experimentally I found out how it works, even though I don't understand it, but anyways every ...
sundaysfantasy's user avatar
2 votes
2 answers
7k views

Problem with a seven segment display. The segments blink then turn off

I can't figure it out what is the problem with my circuit, the segments turning on for sec and then they are turning off for good. I tried to connect to GND instead of the 5 V but then, nothing ...
Mosh Feu's user avatar
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1 answer
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I'm trying to display the numbers 0-99 by multiplexing to two 7 segment displays. One number does not display

//Numbers 0-9. int numberArray[10][7] = { { 0, 0, 0, 0, 0, 0, 1 }, //0 { 1, 0, 0, 1, 1, 1, 1 }, //1 { 0, 0, 1, 0, 0, 1, 0 }, //2 { 0, 0, 0, 0, 1, 1, 0 }, //3 { 1, 0, 0, 1, 1, 0, 0 }, //4 { ...
Cats are Liquid's user avatar
1 vote
2 answers
417 views

4-digit 7-segment display resets when common pin set to HIGH

I'm trying to make a simple stopwatch application with my Arduino Mega 2560 and a 4-digit 7-segment display, but the leftmost three digits only light up for a split second before they go out every ...
MrZander's user avatar
0 votes
2 answers
4k views

A function-definition is not allowed here before '{' token

I'm trying to light up 81 on a 4-digit 7-segment display, but when I try to upload the code to my Uno R3 it gives me this error: "a function-definition is not allowed here before '{' token". I'm new ...
Scottas's user avatar
1 vote
2 answers
4k views

How to power up this LCD 7 segments display

I got two of these type of 7 segments display in LCD material. And here is the datasheet I tried to power up to UNO, it can make the segment on, while a second, the segment go off, but the pinMode ...
Allen Chak's user avatar
0 votes
1 answer
1k views

Using Multiple 4 Digit displays with the same pins

I currently have a ton of 4 Digit 7 Segmented displays(TOFD-5465GGH-B). The display is driven by a PT6961 LED Driver. Using a Library that I found here I was able to use the display with no issues. ...
Sean Marraffa's user avatar
0 votes
3 answers
671 views

4 digit 7-segment display

What happends if I turn on all LEDs at the same time in an 4 digit 7 segment display? that would be 32 LEDs turned on at once, wouldn't that exceed the 200ma MAX for the arduino output?
TBG's user avatar
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2 votes
3 answers
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Convert from 3 V to 5 V

I'm new to Arduino, electronics, and this forum. I have made up a little project that connects an HC-SR04 ultrasonic range detector, and displays the distance on a 4 digit, 7 segment LED display. ...
nedlud's user avatar
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4 answers
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Run two Loops Simultaneously on Arduino

I am not able to combine the below two sketches. What I require is to either run both the loops together or find a way to run both the functions inside a single loop. Sketch 1 #include <SevSeg.h&...
Ameer's user avatar
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1 vote
1 answer
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Seven-Segment Display doesn't work on two lights

This is my code: void setup() { pinMode(2, OUTPUT); } void loop() { digitalWrite(2, HIGH); } This is my circuit: Problem: Light A and B doesn't work when I plug the red cable to 4 and 5. ...
EAX's user avatar
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0 votes
1 answer
798 views

Something's wrong with my code for a 4 digit 7 segment clock display

I'm trying to do a clock using 4x7 segment displays but once I run the code the Display doesn't turn on here's my Code that I'm like 90% sure that there's nothing wrong with it bool A = 2; bool B = ...
Dudamesh 192's user avatar