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Help Requied with Design "Back to the Future"
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Please be positive and constructive with your questions and comments.

Help Requied with Design "Back to the Future"

by Prop_Collector on Mon Apr 20, 2020 5:22 am

Hi Guys, I'm hoping someone can help me out as i'm very new to all this.


Ok so I am trying to recreate the the Delorean Time Circuits from "Back to the Future"
so far I have generated a design that uses 10 seven sgement led displays and 3 fouteen segment led display
the seven segment diplays with show numbers and the fourteen segments abrieviated months (eg: NOV, OCT etc)
and what I want them to display three different sets of numbers and letters that I can change with the push
of a switch for eample

***push switch 1***

1-2-3-4-5-6-7-8-9-0-N-O-V

***push switch 2***

2-4-6-8-0-1-3-5-7-9-S-E-P

***push switch 3***

1-3-5-7-9-2-4-6-8-A-U-G

Now I have created to banks of 5 x seven segment diplays using 2 x MAX7219 but beyond that I get confused as
to which driver chip to use for the 3 fourteen segment displays and then I am not sure which main board is
required to program and control the whole thing.

Any help whith this would be great

Prop_Collector
 
Posts: 4
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Re: Help Requied with Design "Back to the Future"

by adafruit_support_bill on Mon Apr 20, 2020 6:24 am

Here is one approach based on the HT16K33 display backpacks: https://learn.adafruit.com/delorean-time-circuit
We have a 14 segment version of the HT16K33 backpack also: https://www.adafruit.com/product/1910

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Re: Help Requied with Design "Back to the Future"

by Prop_Collector on Mon Apr 20, 2020 6:35 am

Yes I was looking at the back pack but which program board would I need to use to control both or would I need seperate program boards

Prop_Collector
 
Posts: 4
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Re: Help Requied with Design "Back to the Future"

by Prop_Collector on Mon Apr 20, 2020 6:36 am

both meaning both the seven segments and the 16 segments

Prop_Collector
 
Posts: 4
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Re: Help Requied with Design "Back to the Future"

by adafruit_support_bill on Mon Apr 20, 2020 7:11 am

Most any microcontroller will work. The M0 Basic Proto would be a good choice.

The display backpacks have an i2c interface, so you need just 2 pins to talk to all of the displays. There is a limit to the i2c addressing range of the boards. In the guide, he used some tricks to get around that which you can read about here: https://learn.adafruit.com/delorean-tim ... t-trickery

Since then, we have developed a multiplexer board which gives you a lot more flexibility on that front.: https://www.adafruit.com/product/2717

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Please be positive and constructive with your questions and comments.