Need help building 6 digit 7-segment display

Another option is 15 WS2811 addressable LED drivers.
Two of these boards could drive up to 48 segments.
No resistors needed, except maybe for the DP.
Leo..

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Oh thank you for pointing that out! I connect it to +5V right?

Yes, connect to 5volt, like on the Sparkfun diagram I linked to in post#15.
Leo..

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I ordering the parts and components for the project on monday.
I will post on the progress.

Wish me luck guys and thank you again! :heart:

Hello everyone, I succesfully managed to assemble the clock!

I found two anomaly however while testing it.

First is that it only works with my benchtop PSU.
I set the voltage to 12V, current limit to 5 and when I connect it to it it turns on and the leds start working when I press the reset button on the ardu.

However, If I connect the PSU I ordered, which is 12V 5A it simply wont work.
The Arudu power led is on, resetting also works as the yellow led is flashing when I press the button. BUT the leds won't flash up at all.

I tested the PSU with DMM and also with other 12V appliences and it's working fine.

The second wierd thing is that the LEDs stop working If I touch the PCB/screws on it. It looks like some grounding problem or something. But the PCB is a trough-hole premade PCB with no inner connections, also the screws are not connected to the electronics whatsoever.

The code that we used to test it working:
content.instructables.com/FKJ/2XID/HJGE3Y98/FKJ2XIDHJGE3Y98.txt

Video of it working with the bench PSU:

Hello there!
I thought I post my working prototype here.
Working prototype
I'm very grateful for helping me get this together. I'm very interested in your input of how it works.

Do you think I could safely increase the brightness of the multiplexed displays by using smaller resistors?

Thank you!

Don't call it a multiplexed display, because it isn't. Multiplexed displays have less brightness.

You can also increase supply voltage (12-15volt?), instead of changing the resistors.
Measure volt drop across one resistor, and work out segment current (V/ohm).
Look at the datasheet. Segment current should stay below 30mA I think .
Leo..

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