{"id":515,"date":"2013-02-03T21:24:46","date_gmt":"2013-02-03T20:24:46","guid":{"rendered":"http:\/\/quantum-bits.org\/?p=515"},"modified":"2022-08-12T17:35:35","modified_gmt":"2022-08-12T16:35:35","slug":"baking-apple-pies","status":"publish","type":"post","link":"https:\/\/www.quantum-bits.org\/?p=515","title":{"rendered":"Baking Apple Pies"},"content":{"rendered":"\n\n\n
Now that “applepie” (my very first Raspberry Pi) is set up, it is time to have a little fun. The first hacks will be to turn the device into a cheap (but nonetheless quite efficient) AirPlay \/ AirPrint device, while baking a real Apple Pie…<\/td>\n\"\"<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Setting up AirPlay<\/strong><\/p>\n

First, I hooked up the Raspberry Pi to Altec Lansing powered speakers through the Jack connector.<\/p>\n

Next, one has to force audio output to stereo jack (Raspberry PI defaults to HDMI audio output):<\/p>\n

apt-get update\napt-get upgrade\napt-get install alsa-utils\namixer cset numid=3 1<\/pre>\n
The result can be easily tested:<\/p>\n
aplay \/usr\/share\/sounds\/alsa\/Front_Center.wav<\/pre>\n
.. and I could hear the phrase “Front, Center” coming out from the speakers.<\/p>\n
Then, one has to setup Avahi<\/strong> and Shairport<\/strong>.<\/p>\n
Avahi<\/strong> is a free (as in free speech) implementation of Apple zeroconf \/ bonjour<\/a> protocol, including a system for multicast DNS\/DNS-SD service discovery. It is licensed under the LGPL and included in the Raspbian distribution. Thus, the installation of avahi is quite easy:<\/p>\n
apt-get install avahi-deamon avahi-utils<\/pre>\n
Shairport, on the other hand, is not packaged with the Raspbian distribution. It has to be built from sources.<\/p>\n
Let’s install all Shairport dependencies:<\/p>\n
apt-get install git libao-dev libssl-dev libcrypt-openssl-rsa-perl libio-socket-inet6-perl libwww-perl  cpanminus make  libavahi-client-dev\ncpan Net::SDP<\/pre>\n
Then get Shairport’s sources<\/p>\n
cd \/opt\nmkdir airport\ncd airport\ngit clone https:\/\/github.com\/albertz\/shairport.git shairport<\/pre>\n
Let’s compile and install Shairport :<\/p>\n
cd shairport\nmake\nmake install\ncp shairport.init.sample \/etc\/init.d\/shairport\nupdate-rc.d shairport defaults<\/pre>\n
Edit the default startup configuration file (\/etc\/init.d\/shairport) and define the name of your AirPlay device (change the “NAME” variable):<\/p>\n
vi \/etc\/init.d\/shairport<\/pre>\n
I named my AirPlay device “Apple Pie Bureau<\/em>“. Now, start up avahi-daemon and shairport:<\/p>\n
service avahi-daemon start\nservice shairport start<\/pre>\n
And you’re ready to rock, either form an iPhone \/ iPad:<\/p>\n
\"\"<\/center>
\n 
\nor from iTunes:<\/p>\n
\"\"<\/center><\/p>\n
Cool \ud83d\ude0e<\/p>\n
Setting up AirPrint<\/strong><\/p>\n
Setting up AirPrint is about the same procedure. The idea is to set up a CUPS<\/a> server, configure a shared printer and then to broadcast AirPrint stuff via avahi. The bridge between them is built upon the airprint-generate<\/a> script and a few tweaks.<\/p>\n
Let’s install CUPS (and associated printer drivers) and avahi-discover:<\/p>\n
apt-get install cups cups-filters cups-pdf cups-ppdc python-cups \napt-get install foomatic-db-gutenprint libgutenprint2 printer-driver-gutenprint foomatic-db-compressed-ppds foomatic-db-engine foomatic-db-gutenprint foomatic-filters \napt-get install avahi-discover libnss-mdns\nusermod -aG lpadmin pi<\/pre>\n
Next, as usual, one has to edit CUPS configuration file (\/etc\/cups\/cups.conf):<\/p>\n
    \n
  • Comment out the “Listen localhost:631” line<\/span><\/li>\n
  • Add the line “Port 631”. This way, printers can be added throught CUPS web interface from any host<\/span><\/li>\n
  • Add “Allow @Local” right after “Order allow, deny” for <Location \/> and <Location \/admin><\/span><\/li>\n
  • start CUPS: service cups start<\/span><\/li>\n<\/ul>\n
    After connecting my AcuLaser AC1100 printer to the Raspberry Pi (and hunting for hours to get the proper drivers), I was able to access CUPS web administration interface (“https:\/\/applepie:631\/admin”) and add a new shared printer.<\/p>\n
    Then comes the tricky part: bridging CUPS and Avahi:<\/p>\n
    cd \/opt\nmkdir airprint\nwget -O airprint-generate.py --no-check-certificate https:\/\/raw.github.com\/tjfontaine\/airprint-generate\/master\/airprint-generate.py\nchmod +x airprint-generate.py\necho \"image\/urf urf string(0,UNIRAST)\" > \/usr\/share\/cups\/mime\/airprint.types\necho \"image\/urf urf (0,UNIRAST)\" > \/usr\/share\/cups\/mime\/apple.types\necho \"image\/urf application\/pdf 100 pdftoraster\" > \/usr\/share\/cups\/mime\/airprint.convs\necho \"image\/urf application\/vnd.cups-postscript 66 pdftops\" > \/usr\/share\/cups\/mime\/local.convs<\/pre>\n
    .\/airprint-generate.py\ncp AirPrint-EPSON-AL-C1100.service \/etc\/avahi\/services\nservice avahi-daemin restart<\/pre>\n
    The CUPS shared printer, connected to the Raspberry Pi, is now ready to be used, either from GNU\/Linux, Mac OSX or iOS devices:<\/p>\n
    \"\"<\/center>Niice \ud83d\ude0e<\/p>\n
    Baking Apple Pies<\/strong><\/p>\n
    There we go. Appart from the CUPS GNU\/Linux AL-C1100 drivers (which were not easy to find and configure), it was quite easy \ud83d\ude42<\/p>\n
    The Raspberry Pi (named ApplePie) is now set up, and ready to meet … the other<\/em> freashly baked apple Pie:<\/p>\n
    \"\"<\/center>(and yes, I’m quite happy with this “pi vs pie” joke)<\/p>\n","protected":false},"excerpt":{"rendered":"
    Now that “applepie” (my very first Raspberry Pi) is set up, it is time to have a little fun. The first hacks will be to turn the device into a …<\/p>\n","protected":false},"author":1,"featured_media":3853,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[5,21],"tags":[],"_links":{"self":[{"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/posts\/515"}],"collection":[{"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=515"}],"version-history":[{"count":0,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/posts\/515\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/media\/3853"}],"wp:attachment":[{"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}