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led_light_controller [2015/02/21 13:17]
kingkevin [firmware]
led_light_controller [2016/03/31 19:55] (current)
kingkevin update git link
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 This article is about the LED light installation in my room. This article is about the LED light installation in my room.
 +
 LED strips, and ATX power supply, and a custom board are used. LED strips, and ATX power supply, and a custom board are used.
 +The brightness of the strips can be controlled using a remote.
 +Different colour temperatures allow different ambiance.
 +
 +This project is covered in [[https://​www.cuvoodoo.info/?​post_type=podcast&​p=95|episode #008]].
  
 {{led_light_controller:​dsc00609.jpg?​250|}} {{led_light_controller:​dsc00609.jpg?​250|}}
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 {{led_light_controller:​pcb_back.jpg?​250|}} {{led_light_controller:​pcb_back.jpg?​250|}}
  
-The source files are available on [[https://​git.cuvoodoo.info/kingkevin/​led-controller/​tree/master/pcb|git]].+The source files are available on [[https://​git.cuvoodoo.info/​led-controller/​tree/​pcb|git]].
 PDF and gerber of schematich and layout are available in {{led_light_controller:​hardware-release_va.tar.gz|release vA}}. PDF and gerber of schematich and layout are available in {{led_light_controller:​hardware-release_va.tar.gz|release vA}}.
  
Line 35: Line 40:
 3 modes are used to save brightness settings. 3 modes are used to save brightness settings.
  
-The source code is available on [[https://​git.cuvoodoo.info/kingkevin/​led-controller/​tree/master/​firmware|git]].+The source code is available on [[https://​git.cuvoodoo.info/​led-controller/​tree/​firmware|git]].
 The firmware binary is available {{led_light_controller:​led-controller_firmware.tar.gz|here}}. The firmware binary is available {{led_light_controller:​led-controller_firmware.tar.gz|here}}.
 +
 +======= ATX ======
 +
 +A 4.7Ω power resistor is used to draw power on the 5 V rail.
 +This improves the 12 V rail.
 +The ATX [[http://​www.formfactors.org/​developer%5Cspecs%5CPower_Supply_Design_Guide_Desktop_Platform_Rev_1_2.pdf|Power Supply Design Guide for Desktop Platform Form Factors]] ({{led_light_controller:​atx_psdg_v1.2.pdf|archive}}) shows the relation between the load of these two rails.
 +And testing it {{led_light_controller:​power_measurement.ods|confirms it}}.
 +
 +{{led_light_controller:​measure.jpg?​450px|}}
 +{{led_light_controller:​power_measurement.svg?​450px|}}
 +
 +======= colours ======
 +
 +The LED strips allow the brightness of the light to be spread over the room, removing central points from light bulbs.
 +
 +I used LED strips with different colour temperatures:​
 +  * cold (blueish) white above the work bench
 +  * plain white in the centre
 +  * warm (yellowish) white above the sofa
 +
 +{{led_light_controller:​room.svg?​450px|}}
 +{{led_light_controller:​colors.svg?​450px|}}
 +
 +This allow me the change the ambiance:
 +  * cold to concentrate
 +  * mixed for general purpose
 +  * warm and dim when relaxing
 +
 +These modes are set in the firmware and switched between using the remote.
led_light_controller.1424521066.txt.gz · Last modified: 2015/02/21 13:17 by kingkevin