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Use the Squeezebox's ambient light sensor to control playback http://ennonymous.de/2011/09/16/bathr…
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bathroomd: Turn your Squeezebox off while the light is out Version 0.1 16.09.2011 (c) 2011 Enno Luebbers <luebbers_at_reconos.de> DISCLAIMER ---------- I don't provide any guarantees that the script works as intended and doesn't cause any damage to your Squeezebox. Use at your own risk. bathroomd has been tested with a Logitech Squeezebox Radio, firmware version 7.6.1 r9482. Your mileage may vary with other devices and versions. SYNOPSIS -------- The most annoying thing about putting your Squeezebox into your bathroom is the fact that you need to manually turn it on or off. Wouldn't it be awesome if your Squeezebox turned itself on when you switch on the light in the bathroom, and turn off when your leave and switch off the light? Enter bathroomd, a hugely sophisticated quick hack which reads out your Squeezebox's ambient light sensor and mutes the playback volume when the ambient brightness falls below a certain threshold, as well as turning the volume back up when the brightness rises above a (second) threshold. INSTALLATION ------------ 1. Copy the bathroomd script onto your Squeezebox using SSH, preferably into the /usr/bin directory. You might need to enable SSH access first in your Squeezebox's settings. 2. Add the following line to the end of your Squeezebox's /etc/init.d/rcS script: /usr/bin/bathroomd & 3. Edit the /usr/bin/bathroomd script to suit your needs. Especially the constants THRESHOLD_HI and THRESHOLD_LO might need tweaking to account for the particular brightness levels in your bathroom. You can run bathroomd manually with the '-v' switch to see the data read from the ambient light sensor. DEINSTALLATION -------------- Just remove /usr/bin/bathroomd and the line added to /etc/init.d/rcS in step 2 above. You can alternatively restore your Squeezebox to its factory settings by holding the 'ADD' button when powering it on. KNOWN ISSUES ------------ bathroomd only mutes the PCM volume. This has the nice effect that it remembers the volume you set using the volume knob; it might however not work with line in or other audio sources. Because bathroomd only mutes the volume, playback continues even when you are not in the bathroom. This is neither energy efficient nor elegant; if anyone knows of a way to start/stop playback from the Squeezebox's command line, please contact me. bathroomd doesn't do any error checking. It's just a hack. bathroomd periodically checks the ambient light sensor; this activity might be (in fact, it is) noticeable and cause some jitter in the interface. I haven't experienced any degradation in sound quality, though. You might want to increase the CHECK_INTERVAL (in seconds) if the lag bothers you. If you have a real window in your bathroom, this won't work.