CONFIG += qcodeedit

in openscad.pro

EDIT: All the changes have been merged into the main github repository which can be checked out using

git clone https://github.com/openscad/openscad.git

Well a while ago,  I found a blog from someone who goes by the name of Nerdy Toad who was trying to run Music Player Deamon on his MusicPal.  At the time he had only managed to make a test sinewave come out of the devices internal speaker, and we worked together to see if we could get output from the line-out of the device. We were somewhat unsuccessful. However, about half a year later, someone called Maz took our research further. He was able not only to get sound fully working on the device, he was also able to patch Music Player Deamon to work on the device aswell.

For anyone else who has a MusicPal and wants to use it in conjunction with Linux you will need to do the following. First you have to enable the telnet interface for the device. You can enable it via a hidden web interface page:

http://musicpal/admin/cgi-bin/debug

You can then telnet to the device, login as root, and issue the following command.
wget http://musicpal.v3v.de/cifs/cifs.ko

This will get you a kernel module will will allow you to access a samba share on the device. This is important because the device has very limited disk space, and so its preferable to put mpd, config files, etc. In a samba share. Of course you will probably have your mp3 files in a samba share aswell. You will need to create an smb.conf on the machine that you will be sharing files from, (not the MusicPal). This is my smb.conf

[global]
server string = masala
security = SHARE
guest account = giles
[mpd]
comment = mpd
path = /home/giles/mpd
guest ok = Yes
read only = No
[music]
comment = Music
path = /home/giles/Music
guest ok = Yes

In my setup I have mpd on the machine sharing music, this is because of the limited space on the MusicPal, so still on this machine download the mpd binary

wget http://musicpal.v3v.de/mpd-testing/mpd.tar.gz

Then expand the gzip into the mpd directory. You will have to modify the mpd.conf file so that the directories are correct. Once you have done all this, you can mount the shares from the MusicPal telnet session

mount -t cifs //192.168.2.4/mpd /tmp/mnt/mpd
mount -t cifs //192.168.2.4/music /tmp/mnt/mpd/music

Finally from the telnet session you can launch mpd. Back on the client you should now be able to connect to mpd via your favorite mpd client program.

05ca:1839 Ricoh Co., Ltd Visual Communication Camera VGP-VCC6 [R5U870]

After alot of messing around and installing defunct kernel modules, that seem to work, but actually include the wrong firmware versions. I found that the work being done by Alex Hixon on a generic R5U87x driver to be the most up to date. Previously the project rolled its own kernel module to support the camera, However the current version works by providing userspace tools to upload firmware to the device so that the standard uvcvideo driver in the kernel can communicate with the camera.

Unfortunately there wasn’t much around in the way of a howto to explain how to use the code. So I had to figure out the following for myself.

First of all install mercurial and some other project dependencies

sudo apt-get install mercurial libglib2.0-dev libusb-dev

Now you can download the source

hg clone http://bitbucket.org/ahixon/r5u87x/

Change into the source directory and issue the following three commands.

cd r5u87x
make
make rules
sudo make install

If your user isn’t part of the video group you will probably have to modify /etc/group and make yourself a member of that group otherwise you might experience Permission Denied errors.

After you have rebooted you can test using mplayer

mplayer tv:// -tv driver=v4l2

Also make sure you can record because uploading the wrong firmware will in some cases allow you to see output but not record it.

mencoder tv:// -tv driver=v4l2:device=/dev/video0 -nosound -ovc lavc -o test.avi

If you want to clean things up afterwards you can run the following commands
sudo apt-get --purge remove mercurial libglib2.0-dev libusb-dev
sudo apt-get --purge autoremove
rm -r r5u87x

You may find the above steps also work for the following devices:

05ca:1830 Ricoh Co., Ltd Visual Communication Camera VGP-VCC2 [R5U870]
05ca:1832 Ricoh Co., Ltd Visual Communication Camera VGP-VCC3 [R5U870]
05ca:1833 Ricoh Co., Ltd Visual Communication Camera VGP-VCC2 [R5U870]
05ca:1834 Ricoh Co., Ltd Visual Communication Camera VGP-VCC2 [R5U870]
05ca:1835 Ricoh Co., Ltd Visual Communication Camera VGP-VCC5 [R5U870]
05ca:1836 Ricoh Co., Ltd Visual Communication Camera VGP-VCC4 [R5U870]
05ca:1837 Ricoh Co., Ltd Visual Communication Camera VGP-VCC4 [R5U870]
05ca:1839 Ricoh Co., Ltd Visual Communication Camera VGP-VCC6 [R5U870]
05ca:183a Ricoh Co., Ltd Visual Communication Camera VGP-VCC7 [R5U870]
05ca:183b Ricoh Co., Ltd Visual Communication Camera VGP-VCC8 [R5U870]
05ca:183e Ricoh Co., Ltd Visual Communication Camera VGP-VCC9 [R5U870]

/*
* initial stack
*/
.data

.globl	_os_stack
.align 	4, 0x90
.space 	0x100
_os_stack:
.long 0

/*
* let's roll
*/
.text

.globl 	_start
.align 	4, 0x90
_start:
jmp	boot_entry

/*
* multiboot compliant header
* the layout of this thing depends on image format
*/

.align 4, 0x90
boot_hdr:

.long	0x1BADB002		/* magic */
.long   0x00000000		/* no flags if ELF */
.long	0-0x1BADB002-0x00000000	/* checksum */

/* the actual code starts here ... */
boot_entry:
/*
* clear NT, learned the hard way...
*/
pushl 	$0
popfl

/*
* setup our stack
*/
lea   	_os_stack, %edx
movl  	%edx, %esp

/*
* mulitboot compliant loader (read: grub)
* should put magic value in %eax
*/
pushl	%eax

/*
* clear bss
*/
xorl  	%eax, %eax
movl  	$edata, %edi
movl  	$end, %ecx
subl  	%edi, %ecx
cld
rep
stosb

/*
* call our C code initialization ...
*/
pushl 	%ebx
call  	main

/*
* NOTREACHED
*/
darn:
incw	(0xb8000)
jmp	darn

Now you will need to create your ‘main.c‘ program

int main(){
	char * vidmem = (char*)0xB8000;
	vidmem[0]  = 'H';
	vidmem[1]  = 0x7;
	vidmem[2]  = 'e';
	vidmem[3]  = 0x7;
	vidmem[4]  = 'l';
	vidmem[5]  = 0x7;
	vidmem[6]  = 'l';
	vidmem[7]  = 0x7;
	vidmem[8]  = 'o';
	vidmem[9]  = 0x7;
	vidmem[10] = ' ';
	vidmem[11] = 0x7;
	vidmem[12] = 'W';
	vidmem[13] = 0x7;
	vidmem[14] = 'o';
	vidmem[15] = 0x7;
	vidmem[16] = 'r';
	vidmem[17] = 0x7;
	vidmem[18] = 'l';
	vidmem[19] = 0x7;
	vidmem[20] = 'd';
	vidmem[21] = 0x7;
	vidmem[22] = '!';
	vidmem[23] = 0x7;
}

Now we need to compile our program

gcc -nostdinc -c main.c -o main.o
gcc -nostdinc -c start.S -o start.o
ld -nostdinc -Ttext 0x100000 main.o start.o -o kernel

…And thats it, you add an entry to your grub ‘menu.lst‘

I recently discovered how Hacker Friendly My Tom Tom is. Here is a screenshot of TomTom running a text console with on screen keyboard.