I have created a 6-digit 7 segment display using a string of 2812 LEDs. I have taken code from projects that have 4 digits. I am battling to achieve an end point for this project. all the hardware works well and lights are fine. Im trying to get some help with the coding to create a stopwatch that counts up from zero there are 168 addressable LED all connected together. i dont need a RTC however it would be nice add. Any help would be appreciated. Segements are as follows (tried drawing with 4 LED per segment but forum didnt like the post .....3..... 4.........2 ......1.... 5.........7 ....6.....

Is that diagram a variant of the standard 7 segment labelling pattern: [image] Anyway, how far have you got ? Show a schematic and show a simple example sketch where you light one segment, say the top segment of the first digit. EDIT I guess if you have 168 addressable positions and you have 6 digits each made up of seven segments and each segment consists of 4 of the addressable leds, the first step is to devise a structure to represent the whole display. Maybe a 3 dimensional array such as uint8_t digit [6] [7] [4] where the first dimension is the digit position 0 to 5, the second dimension is the segment number 0 to 6 and the third dimension is the four addresses of the leds which make up the segment.

I have tried to do this: as a new user i cant upload attachments - segment points are when referencing your image. G=1, B=2, A=3, F=4, E=5, D=6, C=7 HH:MM.SS hours are first digits in line. you are correct with the number of lights per segments const uint32_t digits[10] = { 0b00001111111111111111111111110000, // 0 0b00001111000000000000000011110000, // 1 0b00000000111111110000111111111111, // 2 0b00001111111100000000111111111111, // 3 0b00001111000000001111000011111111, // 4 0b00001111111100001111111100001111, // 5 0b00001111111111111111111100001111, // 6 0b00001111000000000000111111110000, // 7 0b00001111111111111111111111111111, // 8 0b00001111111100001111111111111111, // 9 Im pretty green with coding, not too bad with building electronics and basic level to reading what others write

So it looks like you have got quite far. You have a representation of leds which have to be on to form each of the numbers 0 to 9. So you have to show the code which reads that table to say write a number 7 in the first digit position on your display.

You tell something works and LEDs are shining. As already requested, schematics would be helpful but especially the code. Most helpers don't have chrystal balls.

Hi, @gingergod Welcome to the forum. [image] How to get the best out of this forum IDE 1.x See also FAQ - Arduino Forum for general rules on forum behaviour and etiquette. Hello, Welcome to the Arduino Forum. This guide explains how to get the best out of this forum. Please read and follow the instructions below. Being new here you might think this is having rules for the sake of rules, but that is not the case. If you don’t follow the guidelines all that happens is there is a long exchange of posts while we try to get you to tell us what we need in order to help you, which is fru… Your code and schematic would make this a whole lot easier. Thanks.. Tom... :smiley: :+1: :coffee: :australia:

@TomGeorge thanks for the direction. I believe that i have uploaded both a pic of the schematic and the code that i have gotten to currently (borrowed from a source with some edits. [313099312_1361085498051290_3879472451143129860_n] [312910573_815236516382712_4902328215484235789_n] ModularLEDDisplay_168_led_28_LED_per_number.ino (7.5 KB) [7 seg]

thanks for the pointers @Railroader . i have added a few elements below in a reply to tom.

@6v6gt thanks for that. i have been able to upload my code now in a reply in one of the comments now

[image] gingergod: i have been able to upload my code now in a reply in one of the comments now If you mean that snippet of an array definition in post #3 that is not enough. It has to be a complete and runnable program (sketch). If you have nothing else, post a link to the code you are using as a basis for your project.

ModularLEDDisplay_168_led_28_LED_per_number.ino (7.5 KB) I uploaded this a little higher up be here it is again Thanks again

6 digit 7 segment 2812 clock/stopwatch

Projects General Guidance

TomGeorge October 29, 2022, 10:50am 6

Hi, @gingergod
Welcome to the forum.

Your code and schematic would make this a whole lot easier.

Thanks.. Tom...

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6 digit 7 segment 2812 clock/stopwatch

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