Changes
[[Category:Ongoing_ProjectsClosed_Projects]]After having recently bought in a RGB LED Strip into the hackerspace, I received a lot of positive feedback about it. 2 people even gave me 20 CHF each to buy more LED Strips so that they can be used around the hackerspace. In particular, around the perimeter of the room next to the ceiling, where there is a little ledge. Eventually, they could be added under tables, on shelves, and so on to improve lighting within the HS. Here are 2 videos and a pic I took of how they look like:<gallery>File:Beta-LED-Strips-at-HS.JPG|LED Strip above the solder stationFile:LED-Strips-from-close-up.mp4|Video of the strip from afarFile:LED-Strips-Up-Close.mp4|Video of the strip from up close</gallery>
== What are LED Strips? ==
The idea with the LED Retrofit is to provide the HS with an effective yet sleek lighting solution, by using color-changeable LED strips which are controllable via the network.
Here is an exhaustive explanation and tutorial from [http://www.ladyada.net/products/rgbledstrip/ laydyada]. In essence, there are 3 SMD (Surface Mount Technology) RGB (Red Green Blue) LEDs (Light Emitting Diodes) on a segment with 3 resistors which allow the ~3 v LEDs to be drivven using a 12v power supply. These 'segments' are continuously joined together to form spools 5 meters each. Sometimes you can buy them in smaller bits (1 meter, 50 cm, 1 foot, etc), but sticking to a 5 meter spool is the best.
==== Specialized sites ==How to compile ? ==If the website * There is based anywhere else other than Chinaa library problem which need to be adresse, don't even bother. The markup is ridiculous (heckbut since then, even eBaythere's markup is pretty big!)a chroot on foo with the correct settings to compile/upload the code ssh foo.fixme. If it is in China, avoid, unless the price is very good, meaning that it is either a superch sudo su /root/enter-low quality thing, or a fake. Either way, '''avoid'''chroot.sh cd /root/led-strip/LedStripDriver make # Put the USB cable from foo to the leds make upload # Remove the USB cable
==== TaoBao ==Improvements ==Prices are very similar * '''Figure out a way to eBay. Not worth the riskfix brightness issue''' I think we should feed each 5m segment from multiple sides, added shipping cost, and time in my opinion unless buying a lot. ==== Manufacturers ====Great for bigger orders, however on or even split it into smaller ones, pieces (it is suspected that the shipping can be prohibitive (most insist on using DHL, adding a ton pcb traces aren't thick enough for the current). Maybe use individual power supplies every couple of shipping fees + unwanted taxesmeters coupled with their own (more basic). The prices are really good though. Like 1.45$ control circuitry that get commands from central Arduino? I suspect that there is a meter good. == Plan significant voltage loss along the connecting cable because of Action ==Here are the steps which need to be taken low voltage and long distance, using 230v AC could help. We could also experiment in order to upgrade raising the lighting at voltage as long as it does not bypass the HS:#Decide on type of specified wattage, and that no single LED Strip##Get gets more than its designed voltage. Maybe the brighter (60 LEDs/meter) or mosfets are the cheaper wrong kind?* '''Better control options''' maybe a nicer web-interface with more options (30 LEDsSee [https:/meter/fixme.ch/wiki/LED_Retrofit#Uses Uses] below) strip?, as well as an android app. ##Get * '''Moar LED strips''' place LED strips in other places, e.g. to replace the cheaper but lower quality one or crappy CFL in the better quality but more expensive one?#Buy 20 meters middle of the room (maybe use [http://www.aliexpress.com/item/Brand-New-5050-5M-LED -300-SMD-Warm-White-Flexible-non-Waterproof-Light-Strip and wait a couple -12V-Free/465436346.html pure white LED strips] instead of weeks for it to get here#Create an Arduino sketch with networking capabilities to control the strips#RGB ones), electronics bench, inside fridge, foyer, inside thermibel :) ???#Profit!!!
== Uses ==
* Control remotly using a script (netcat)
** Web server running on an Arduino board to control the LEDs: http://62leds.220fixme.135.201ch/rgb** Little scripts for the current implementation:*** [[File:led.sh]]*** [[File:led-strombo.sh]]*** [[File:led-colors.sh]]*** [[File:led-prog.sh]]*** [[File:led-all.sh]]inside the repository
* Controled by the music (color, intensity)
* Special program: Burger time, etc
* Philips ambilight-like for projected videos
* Time dependent light (i.e. automatically dimming)
====== Iteration 2 ====Links ==* [https://learn.sparkfun.com/tutorials/building-large-led-installations Sparkfun''Got a better idea?s guide to large LED installations]Please share* [http://nodes.nurdspace.nl/ DMX controlled LEDs], Iinstallation/setup [[NurdNodes]]* [http://www.ladyada.net/products/rgbledstrip/ Laydyada'm eager to hear other peoples tutorial and background info]* [http://wiki.muc.ccc.de/moodlamp_30 CCC's opinions!'Moodlamp (DE)]* [http://electronics.stackexchange.com/questions/19413/why-doesnt-my-5050-led-strip-draw-as-much-power-as-i-expect Why doesn't my 5050 led strip draw as much power as I expect?]* [http://www.ebay.com/itm/5m-SMD-5050-RGB-SMD-LED-Flexible-Strips-300-LEDs-Strip-12V-60-LEDs-Meter-/150960156950?pt=US_Car_Lighting&hash=item2325ed3116 The LED strips that were used]* [https://tindie.com/shops/ch00ftech/qr-clock-1/ QR LED Clock]
= Project Leader =