Close
0%
0%

Control a bunch of 7 segment displays

Ever needed to have a bunch of 7 segment display? Me neither, but I still made this.

etienneEtienne
Following
Liked Like project

Just one more thing

To make the experience fit your profile, pick a username and tell us what interests you.

Pick an awesome username
hackaday.io/
Your profile's URL: hackaday.io/username. Max 25 alphanumeric characters.
Pick a few interests
Projects that share your interests
People that share your interests

We found and based on your interests.

Choose more interests.

OK, I'm done! Skip
Similar projects worth following
2.2k views
0 comments
6 followers
View Gallery
Since I had some free time during the past week, I wondered what useless thing I could do.

I settled for this project, a way to stack a bunch of seven segment displays, driven by some 74hc595. For this, I used SMA42056 segment displays, and the quad version of it.

For now, I've got a rough idea of how things are going to get together :

Two 74hc595 can control up to 8 digits, since each digit is made of 8 led anodes(the 8th one is the dot), and 1 cathode. Therefor, I'll go for a few board designs :

- A 8 * single digit board
- A 2 * 4 digits board
- A single 4 digits board, if someone wants to use this for reasonable size displays

I also plan on making an Arduino library to make an easy communication(The boards will be compatible with anything, since the shift registers aren't for arduino only).

SMA42056 controller.zip

Here's the eagle project with the first board. It shouldn't be hard to turn it into the other boards mentionned earlier

x-zip-compressed - 301.72 kB - 07/28/2018 at 20:12

Download

8 x single digit.zip

The gerber files for the first board, that can serve as an host for 8 single digits display

x-zip-compressed - 98.86 kB - 07/05/2018 at 19:14

Download

  • 2 × 74HC595 The shift registers used
  • 8 × SMA42056 The displays used
  • 1 × Quad SMA42056 Same as above, but with 4 digits included
  • 1 × Bended pin headers To have multiple boards connected, you need some 5 male bended pins and 5 female bened pins
  • 1 × Female pin header To plug the display in place

  • Shelved for now

    Etienne • 07/28/2018 at 20:10 • 0 comments

    Hey guys, I'm gonna stop this project for now, I've started it since I had some time to lose, but obviously I don't have enough since I haven't touched it for a while...

    I'm gonna drop the eagle files so that you can continue it if you feel like it, and may finish it later but it's not in my priorities.

View project log

  • 1
    Get the board and components

    To use this, you'll need to get the gerber files for one of the boards in the files section, and get a manufacturers to make it. If you don't know which one to choose, I usually go for jlcpcb.com

    For the components, take care of what you'll need. Usually, you need at least one 5 pin bended header, to connect the board to the controller(arduino, raspberry, ...), 2 x 74HC595, required for all boards, some 220R resistors, in 0805 packages, one per digit used on the board, and some female header pins to plug the display.

  • 2
    Solder it all

    Yeah, that's pretty self axplanatory, but important ^^

  • 3
    Program a controller, say, an arduino

    Once I'll have the library ready, it will get easier, so, I'll leave this blank for now

View all 4 instructions

Enjoy this project?

Share

Discussions

Similar Projects

A while ago, I bought some interesting surplus tube display boards. I reverse engineered and got them working again with a custom driver.
Project Owner Contributor

Old Russian VFD module converted into a clock

cselzeycselzey

A clock that displays the time in any arbitrary base
Project Owner Contributor

All your base are belong to us clock

gorlothGorloth

let's do this - now with TFT display
Project Owner Contributor

ESP8266 RFid reader

davedarkodavedarko

A Wearable, "Smart", Internet of Things Development Board That Learns
Project Owner Contributor

BodiHub

casual-cyborgCasual Cyborg

Does this project spark your interest?

Become a member to follow this project and never miss any updates

Going up?

About Us Contact Hackaday.io Give Feedback Terms of Use Privacy Policy Hackaday API

© 2024 Hackaday

Yes, delete it Cancel

Report project as inappropriate

You are about to report the project "Control a bunch of 7 segment displays", please tell us the reason.

Send message

Your application has been submitted.

Remove Member

Are you sure you want to remove yourself as a member for this project?

Project owner will be notified upon removal.