Cheap Substitute for "Digital Cart" Audio

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wado1942
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Cheap Substitute for "Digital Cart" Audio

Unread post by wado1942 » Thu Mar 29, 2018 6:28 am

Hello. I work mostly in live sound and need a cheap substitute for a Digicart, like the 360 Systems "Instant Replay". I don't have $1,500 for a box with a bunch of prerecorded audio cues in it that can be triggered via buttons on the front panel. There's no need for a screen, keyboard or anything like that, just a row of buttons to play different cues. Ideally, I should be able to plug in the machine and in a few seconds, have instant access to anything assigned to the front buttons. I'm thinking the C0 could do this, with the addition of some kind of audio DAC and some tact switches tied into the GPIO? I am really clueless beyond that though. Any ideas?

Thanks.

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odroid
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Re: Cheap Substitute for "Digital Cart" Audio

Unread post by odroid » Thu Mar 29, 2018 10:02 am

How many buttons do you need?
Is it okay with several arcade game push buttons?

Do you have any experience with C language or Python programming?
You need a basic programming skill to read the buttons status and play the sound sample cues.

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mad_ady
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Re: Cheap Substitute for "Digital Cart" Audio

Unread post by mad_ady » Thu Mar 29, 2018 8:35 pm

I have a better and cleaner solution. A c0/1/2 with a ir remote. Map the buttons via lirc to any action you want (like mpg123 /path/to/mp3

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Re: Cheap Substitute for "Digital Cart" Audio

Unread post by wado1942 » Sun Apr 01, 2018 12:23 am

odroid wrote:How many buttons do you need?
Is it okay with several arcade game push buttons?
I think 4 buttons would be a minimum, 8 would be more ideal. I don't care too much about how it looks as long as it's a compact, reliable, self-contained unit. I was thinking of a simple box with some buttons on top, the SBC inside it and a pair of RCA output jacks.

Do you have any experience with C language or Python programming?
Not really. I've dabbled a little in Java, but not enough that I could do much of anything on my own. I'm afraid I'm purely an "end user". I can build a computer from parts, make some simple audio circuits etc. but never really got into software.

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Re: Cheap Substitute for "Digital Cart" Audio

Unread post by odroid » Sun Apr 01, 2018 5:02 pm

If you have no programming skill, it seems to be very hard to make it by yourself. :(

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rooted
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Re: Cheap Substitute for "Digital Cart" Audio

Unread post by rooted » Mon Apr 02, 2018 5:12 am

Python is easier to get something done vs Java, so I think he could handle it.

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Re: Cheap Substitute for "Digital Cart" Audio

Unread post by wado1942 » Mon Apr 02, 2018 7:25 am

I'm aware is a somewhat difficult language, so I can probably handle Python if somebody helped me get started. Right now, I'm using my MP3 player to play back cues and it's a royal pain. Just about anything else should be better. I'm no genius in HTML but I've built a few websites using MS Notepad because I don't like all the extra crap other programs throw into the code. I guess that's a form of coding too.

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Re: Cheap Substitute for "Digital Cart" Audio

Unread post by mad_ady » Mon Apr 02, 2018 2:27 pm

I still think an IR remote + odroid + usb soundcard offers the cheapest/easiest solution with no programming required. It provides large number of buttons and requires only lirc configuration, which is documented on the wiki.

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Re: Cheap Substitute for "Digital Cart" Audio

Unread post by rooted » Mon Apr 02, 2018 2:31 pm

I think he is looking for a quick and dirty howto, any way that works seems okay.

Your solution is definitely easiest.

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