7
votes
7 segment 4 digit not showing numbers 2,3 and 0
It looks like you have the center segment and the top left vertical segment reversed. For the image you show, if you switched the on/off states of those 2 segments, you'd see 1230.
I don't know if the ...
- 5,752
6
votes
Accepted
Interfacing unusual 4 digits 7 segments display
This display seems to have 32 addressable LEDs controlled by only
7 pins. Judging from this fact, and from the provided pinout table, it
looks like a Charlieplexed matrix.
A typical way to drive this ...
- 45.2k
5
votes
Accepted
Problem with a seven segment display. The segments blink then turn off
The first thing to understand is how to connect the 7 segment display to your Arduino. The common anode pin connects directly to 5VDC. Each "segment" connects to the Arduino through a current limiting ...
- 2,514
4
votes
Accepted
74HC595 to 4 Digit 7 Segment using SevSegShift Library
Finally able to fix it with the help of @PeterPaulKiefer, I was able to find the problem. The problem is in the code itself (schematic is alright. No changes there) and this is the updated code.
#...
- 111
4
votes
Accepted
Library for working with a 4-digit 7-segment indicator SH5461AS
This one tm1637 sounds good. I was thinking to use it next time.
Edit 1:
Lately posted image suggests that it is without a separate display controller chip, then this library should work.
Edit 2:
...
- 104
3
votes
delay() problem for 74HC595 and 7-segment
With the displays which use shift register to light multiple seven segment digit blocks, the register lights up only one digit at a time. The illusion of multiple digits lit is created by fast ...
- 18.3k
3
votes
Accepted
6 wire 3 digits 7 segment display and arduino question
What you have is a Charlie-Plexed display like the one in the picture below. You need one more wire than this example because your display also includes the decimal point. If you go through the ...
- 427
3
votes
Accepted
displaying a 3 digit clock time on a 4 digit 7 segment display
I tested your first code line and it outputs a right aligned 136 without colon at my display. (Said I have only a colon at the middle and no decimal points)
The 5 at the fist digit (and also the A at ...
- 16.6k
3
votes
2
votes
How to power up this LCD 7 segments display
Driving an LCD display is nothing like driving an LED display. You need to provide an alternating current to the right segments at the right time.
It is possible with an Arduino on a simple display ...
- 106k
2
votes
Accepted
How to add numbers to a position when controlling a seven-segment display
In your code, you call:
newPos = encoder.getPosition();
which grabs the absolute position of the encoder. When you rotate this one step, the value of newPos goes up (or down) by one.
Then, you make ...
- 6,974
2
votes
A function-definition is not allowed here before '{' token
The importance of proper indentation is clear here...
I thought you were missing a closing curly braces. When you type code, press regularly cmd/ctrl-T to ident your code -- it helps catching ...
- 1,595
2
votes
6 wire 3 digits 7 segment display and arduino question
yes, that's CharliePlexing, Some kind if multiplexing without IC, As far as I understood it is based on Base3 instead of Base2 for On&Off. It is based on Base3 for High,Low,Disconnected logic
2
votes
6 wire 3 digits 7 segment display and arduino question
Thank you for above information. It helped me a lot with a similar 7-segment display.
Here is a fresh link to the OP's original file:
https://drive.google.com/file/d/1G9Fknrpn4E85xdxtZdb-2jlWqemdT6xo/...
- 59
2
votes
4-digit 7-segment display not showing value properly
What caused the problem of the digit that driven by pin 12 is quite obvious to me. You use pin 11, 12, 13, 14 for driving the 7-segment digits. While SPI library by default uses pin 10, 11, 12, 13 as ...
- 1,978
2
votes
Interfacing unusual 4 digits 7 segments display
I don't know. If I had to talk about it, I would say a LED segment display with a matrix layout with a complementary drive.
If a pin is used as a cathode, a LOW signal must be applied. If it is used ...
- 1,928
2
votes
Accepted
4 Digit 7 segment display flickering
With the help of Majenko and jsotola in the comments, I've got it fixed! It was the text I was displaying in the Serial Monitor that was slowing the display down. Here is the updated program that ...
- 110
2
votes
Accepted
Arduino MEGA - How to send and receive data asynchronously?
Seems like receiving data from PC blocking my send data function until it's done.
You may be saying the same thing, but I'd put it that it's waiting for more data to arrive that isn't going to.
Is ...
- 5,739
2
votes
Arduino Nano timer drifting
Your Arduino's oscillator is too slow by:
(24 hours - 6 minutes) / 24 hours = (24 * 60 - 6 minutes) / (24 * 60 minutes) = 0.995833333 (about 0.4%).
After changing the constant period to 994, the ...
- 2,466
2
votes
Arduino Nano timer drifting
As pointed out by hcheung in a comment, you shouldn't expect a usable
accuracy from the Arduino's millis() or micros(). This is because
these functions rely on the Arduino's clock source, which for ...
- 45.2k
1
vote
TPIC6B595 Output Unable to Allow Supplied Power to 7-segment Display
You are getting confused. The pullup resistor is only needed on open drain when you are using it to generate logic levels. It turns the OD output into an RTL output.
You don't want that.
Instead you ...
- 106k
1
vote
4-digit 7-segment display not showing value properly
Reverse engineering your code, which is generated by https://examples.blynk.cc, I have found that you are using:
an Arduino Uno
W5100 Ethernet shield (or Arduino Ethernet Rev3)
DHT11
4-digit 7 ...
- 3,218
1
vote
4-digit 7-segment display not showing value properly
Your issue could be in code or in your hardware.
To work out which one, try running one of the example sketches like the testWholeDisplay.ino that comes with the library you are using. This way you ...
- 3,218
1
vote
delay() problem for 74HC595 and 7-segment
In loop() as you've shown it in your code, you can move RunNum(i,2); down to outside of the 'j' and 'k' loops. Likewise you can move RunNum(j,1); down to outside of the 'k' loop. This won't fix your ...
- 15.4k
1
vote
displaying a 3 digit clock time on a 4 digit 7 segment display
Always start by reading the docs. The README of the TM1637 display
library gives a short summary of the available functions, then states
“Please refer to TM1637Display.h for more information.” It ...
- 45.2k
1
vote
Accepted
How to power up this LCD 7 segments display
that's a controller-less dynamic (mutiplexed) display, with 4 coms.
So you will to program the mcu to do a lot:
1) the com pins are driven with 1/4 dc signal sequentially;
2) the seg pins are ...
- 2,813
1
vote
Matrix keyboard and 7segment display countdown combination
Try using millis(), it returns the number of milliseconds passed since the Arduino board began running the current program.
When you start the countdown you set a variable for a beginning time
int ...
- 164
1
vote
4 digit 7 segments display wrong number
You call atoi() with a char. Parameter of atoi is const char*. To convert ASCII code of digit to the digit use
int digit = IncomingData[i] - '0'
- 18.3k
1
vote
7 segment multiple display, only display 1 digit
You aren't multiplexing your displays properly.
At the moment you are doing:
Do nothing until the button is pressed
Switch on display 1
Turn on the segments for digit 1
Wait 5ms
Switch off display 1
...
- 106k
Only top scored, non community-wiki answers of a minimum length are eligible