Opensource hardware CDJ/MIDIPC - Raspberry Pi ($25)

[Chairmonkey]

Regarding interfacing the HID hardware with the software and audio programming in general, I have no experience with that at all. Time to start reading I guess.

Any luck? I'm thinking about pursuing a similar project. All of my experience is on the audio software programming side.

[MrPopinjay]

Gosh. I've been talking about running xwax on a a RPi for over a year? I really need to get off my ass and do it :P

[ReggieUK]

Hi All, I'm also interested in getting the pi running some dj software, however, I'm not entirely convinced now that it's up to the task with something like mixxx etc. the problem being the lack of 2d acceleration in X, it pretty much chews up all of the processing power which is (or was the last time I looked ) evident in how the gui behaves in something like xbmc, the video is accelerated at 1080p but the menus aren't, so they're not that responsive, it feels like you're running through treacle with toffee boots on. This would cause big issues with latency I feel.

Btw. I am the same guy that posted on the raspberrypi forums for the mixxx thread and the guy that posted the raspberry pi gpio drivers.

There is also an issue with usb, it's not very good on the pi, so plugging all sorts of fancy usb controller kit into it might cause issues, it's something that someone would need to try and report back!!

Regards,
Reggie.

[MrPopinjay]

If I were you I would compile Mixxx without all the extra fluff and just run 2 decks, the mixer and a stripped down skin. That'd run fine, I'm sure.

edit: This title really annoys me. The RPi isn't open source :P

[ReggieUK]

It's mostly opensource but the bit that's closed, 99% of people WON'T know what to do with it if it was opensource :-) the bit that's closed source is the gpu drivers, then again, so are most of the embedded devices of any worthy note. Like the beagleboard, using Imagination Technologies PowerVR SGX530 GPU for instance.

[MrPopinjay]

Nope, the RPI is 0% open source. People just commonly run open source operating systems on it.

The beagleboard is also 0% open source.

[ReggieUK]

All of the drivers are open source, except the gpu.

[MrPopinjay]

The RPI is hardware. Closed source hardware.

The software (i.e. kernel, OS tools, drivers, DE, etc) that is most commonly used with the RPi is mostly open source.

[ReggieUK]

I guess all the schematics are published for fun then? :-)
http://elinux.org/RPi_Hardware#Schematic_.2F_Layout

or the datasheet for the broadcom chip?
http://www.raspberrypi.org/wp-conten...eripherals.pdf

we clearly have a difference of opinion and you care more than I do about what it's called :-)

I might give mixxx a go at some point on one but as I said previously, I'm not convinced that it will cope. I reckon it's a more likely prospect on something a bit more expensive, like a samsung 4412 based board.

I'm quite interested in using the pi as a go between, with a MF plugged into the pi, then midi manipulation software, with the pi outputting altered midi.

[MrPopinjay]

The chips are all closed, sadly.

It'll definitely work, I was talking to one of the Mixxx devs who did it for a bit of fun