Seven Segment Driver ICs - What is the best?

[jay_dee]

Hi,
Yet another possible customer project, unusally they actually have a sensible budget.

Driver IC for Seven segment displays.
What is considered the preffered driver chip ? I see there are a few varients already supported by flowcode components.

Just looking for Numbers 0-9 and it will be sets of individual seven segment elements, not arrays of 4 digits as is usually found.
The project will contain 30 seperate 7 seg digits.
+ 26 LED lamps and 4 classic LEDs. Look up an Aston series 1 lagonda dash board...its a spaceship of a car from the late 70s
thanks for any guidance. J.

[jgu1]

Hi /J

I don't really know what you are going to do with the project and what you want, but as you mention yourself, there are several in flowcode.
I know from earlier where you assembled everything yourself with Cmos and TTL circuits I have used sevensegment driver which an Lacth, counter, 4 bit, select Anode/Catode ect. as you can use with FC10 and Arduino and Pic.

Have a look at CD4543, BCD and 4026 counter, MC14558 seach for the data on the internet

Hope it is this could be usefull

Br Jorgen

[chipfryer27]

Hi JayDee

You could probably get an army of free workers to help on that Lagonda. No moving parts other than the steering wheel if I remember.

Regards

[stefan.erni]

Hi JayDee

Take a look here....

Choice of:
https://www.adafruit.com/category/88

a variation ?:

2025-02-13_08-41-57.PNG (324.66 KiB) Viewed 2148 times

From Flowcode:

2025-02-13_08-51-06.PNG (22.87 KiB) Viewed 2148 times

[jay_dee]

Hi,
so the HT16K33 looks like a good route to investiagte. I see the FC components has been setup for dot matrix style displays. I guess it would need tweaking to suit a standard 7 segment.
I'll have a read of the datasheet and see how lost i get! J.

[chipfryer27]

Hi

What might suit as you have many LED displays to control, is the humble CMOS 4026B as it only needs two connections. It is a counter optimised for 7-segment displays. A positive pulse increments the display (0-9) and a high pulse on reset sets it back to zero.

You would need a little routine that would, for example, reset then pulse in the required number. Even a modest uC can do that in an instant.

Regards