Revision: 2016-04-21<\/p>\n
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Audience<\/strong><\/p>\n The following instructions are targeted at experienced users. You may\u00a0always\u00a0feed a search engine with terms like “Raspberry Pi\u00a0topic<\/em>” (Raspberry Pi\u00a0WLAN client<\/em>, for example) in order\u00a0to\u00a0complete each step.<\/p>\n Objective<\/strong><\/p>\n Learn how to turn the single-board computer Raspberry Pi\u00a0into a always-on low-power networked print server. The special feature is, your printer will be automatically connected to and disconnected from the mains<\/em>\u00a0as needed.<\/strong><\/p>\n <\/p>\n Prerequisites<\/strong><\/p>\n You need:<\/p>\n 1. Some printer…<\/strong><\/p>\n 2. LAN or WLAN<\/strong><\/p>\n 3. Raspberry Pi<\/strong>\u00a0with…<\/p>\n <\/p>\n Setup Instructions<\/strong><\/p>\n These instructions cover a Raspi WLAN client system, serving\u00a0a printer named\u00a0standard<\/em>\u00a0to your LAN.<\/p>\n General Setup<\/strong><\/p>\n CUPS Setup: The Server and a Printer Named\u00a0standard<\/em><\/strong><\/p>\n If you wonder about AirPrint now: it’s built-in.<\/p>\n Control Software Setup<\/strong><\/p>\n Hardware Setup<\/strong><\/p>\n Turn the Raspi off, remove\u00a0all<\/strong>\u00a0the cables!<\/p>\n![\"idling\"](\"http:\/\/andreberger.eu\/automatiq\/wp-content\/uploads\/idling-600x450.jpg\")
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![\"wlan_and_relaiscables\"](\"http:\/\/andreberger.eu\/automatiq\/wp-content\/uploads\/wlan_and_relaiscables-450x600.jpg\")
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\nsudo -s<\/em><\/li>\n\n
\napt-get install cups cups-bsd avahi-utils<\/em><\/li>\n
\nEdit\u00a0the\u00a0upper part<\/strong>\u00a0of\u00a0\/etc\/cups\/cupsd.conf<\/em>\u00a0to:
\nLogLevel warn\u00a0<\/em>
\nMaxLogSize 0<\/em>
\nPort 631<\/em>
\nServerAlias *<\/em>
\nListen \/var\/run\/cups\/cups.sock<\/em>
\nBrowsing On<\/em>
\nBrowseLocalProtocols CUPS dnssd<\/em>
\nBrowseOrder allow,deny<\/em>
\nBrowseAllow all<\/em>
\nBrowseRemoteProtocols CUPS dnssd<\/em>
\nBrowseAddress @LOCAL<\/em>
\nBrowseLocalProtocols CUPS dnssd<\/em>
\nDefaultAuthType Basic<\/em>
\nWebInterface Yes<\/em>
\n<Location \/><\/em>
\n\u00a0 Order allow,deny<\/em>
\n\u00a0 Allow @LOCAL<\/em>
\n<\/Location><\/em>
\n<Location \/admin><\/em>
\n\u00a0 Order allow,deny<\/em>
\n\u00a0\u00a0# comment out the line below once your printer is set up, for SECURITY reasons!<\/strong><\/em>
\n\u00a0 Allow @LOCAL<\/em>
\n<\/Location><\/em>
\n<Location \/admin\/conf><\/em>
\nLeave the rest of the file unchanged!<\/strong><\/li>\n
\nkillall -HUP cupsd<\/em><\/li>\n\n
\nkillall -HUP cupsd<\/em><\/li>\n<\/ol>\n![\"printing_with_led\"](\"http:\/\/andreberger.eu\/automatiq\/wp-content\/uploads\/printing_with_led-600x450.jpg\")
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\n\/opt\/local\/bin\/pinsoff-printer.py &
\n\/opt\/local\/bin\/printer.py &<\/em><\/li>\n
\n*\/1 * * * * root\u00a0 \/opt\/local\/bin\/relais2-printer.sh >\/dev\/null 2>&1<\/em><\/li>\n
\ntar -C \/ -xvzf\u00a0theartofprinting.tar.gz<\/em><\/li>\n\n
\n<\/em>Run from\u00a0\/etc\/rc.local<\/em>, it makes sure all used GPIO pins start in a defined state. A more elegant solution would use\u00a0\/boot\/config.txt<\/em>\u00a0for the purpose<\/li>\n
\nRun from\u00a0\/etc\/rc.local:<\/em><\/p>\n\n
\n<\/em>Run\u00a0from\u00a0\/etc\/crontab<\/em>\u00a0every minute:<\/p>\n\n
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![\"wlan_led_and_touchsensor_detail\"](\"http:\/\/andreberger.eu\/automatiq\/wp-content\/uploads\/wlan_led_and_touchsensor_detail-600x450.jpg\")
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![\"raspi-rtc\"](\"http:\/\/andreberger.eu\/automatiq\/wp-content\/uploads\/raspi-rtc-600x450.jpg\")
<\/p>\n![\"printer\"](\"http:\/\/andreberger.eu\/automatiq\/wp-content\/uploads\/printer-2-450x600.jpg\")
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