LED window display - Revision history

P2: /* Ultimate destruction (August 1st, 2019) */

2019-09-13T04:28:53Z

Ultimate destruction (August 1st, 2019)

← Older revision		Revision as of 04:28, 13 September 2019
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	== Ultimate destruction (August 1st, 2019) ==		==Ultimate destruction (August 1st, 2019)==
	But, it was ultimately destroyed, in an unfortunate zap, followed by a respectful dismantling.		But, it was ultimately destroyed, in an unfortunate zap, followed by a respectful dismantling.

			* The [[Dead Projects Society]] welcomes its newest member.

	==Revival (2018-2019)==		==Revival (2018-2019)==

P2: Little status report

2019-09-13T04:27:59Z

Little status report

← Older revision		Revision as of 04:27, 13 September 2019
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			== Ultimate destruction (August 1st, 2019) ==
			But, it was ultimately destroyed, in an unfortunate zap, followed by a respectful dismantling.

	==Revival (2018-2019)==		==Revival (2018-2019)==

	====== mega-nodesign ======		======mega-nodesign======
	[https://github.com/clindsa1 Chris Lindsay] has [https://github.com/baltimorenode/mega-nodesign revived] the Node Sign project. Come check on it during OpenHack!		[https://github.com/clindsa1 Chris Lindsay] has [https://github.com/baltimorenode/mega-nodesign revived] the Node Sign project. Come check on it during OpenHack!
	[[File:Sign Logo.jpg\|alt=A pixel-art version of the Baltimore Node logo rendered on a wall of LED's, an array of RGB Christmas lights.\|thumb\|none\|A custom Node Logo rendered on the sign during [https://www.meetup.com/BaltimoreNode/events/ OpenHack].]]		[[File:Sign Logo.jpg\|alt=A pixel-art version of the Baltimore Node logo rendered on a wall of LED's, an array of RGB Christmas lights.\|thumb\|none\|A custom Node Logo rendered on the sign during [https://www.meetup.com/BaltimoreNode/events/ OpenHack].]]

Clarke at 12:44, 28 March 2019

2019-03-28T12:44:48Z

← Older revision		Revision as of 12:44, 28 March 2019
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	http://lpc.opengameart.org/		http://lpc.opengameart.org/

			Does this relate? [[Roadmaster LED Signboard]]

P2: wording

2019-01-20T03:53:53Z

wording

← Older revision		Revision as of 03:53, 20 January 2019
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	==~~Current Status~~ (2018-2019)==		==Revival (2018-2019)==

			====== mega-nodesign ======
	[https://github.com/clindsa1 Chris Lindsay] has [https://github.com/baltimorenode/mega-nodesign revived] the Node Sign project. Come check on it during OpenHack!		[https://github.com/clindsa1 Chris Lindsay] has [https://github.com/baltimorenode/mega-nodesign revived] the Node Sign project. Come check on it during OpenHack!
	[[File:Sign Logo.jpg\|alt=A pixel-art version of the Baltimore Node logo rendered on a wall of LED's, an array of RGB Christmas lights.\|thumb\|none\|A custom Node Logo rendered on the sign during [https://www.meetup.com/BaltimoreNode/events/ OpenHack].]]		[[File:Sign Logo.jpg\|alt=A pixel-art version of the Baltimore Node logo rendered on a wall of LED's, an array of RGB Christmas lights.\|thumb\|none\|A custom Node Logo rendered on the sign during [https://www.meetup.com/BaltimoreNode/events/ OpenHack].]]

	==~~Classic~~ Project (2011-2012)==		==Original Project (2011-2012)==
	Collecting notes for the LED window display.		Collecting notes for the LED window display.
	===System Architecture===		===System Architecture===

P2: formatting

2019-01-20T03:52:07Z

formatting

← Older revision		Revision as of 03:52, 20 January 2019
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	==Current Status (2018-2019)==		==Current Status (2018-2019)==
	[https://github.com/clindsa1 Chris Lindsay] has [https://github.com/baltimorenode/mega-nodesign revived] the Node Sign project. Come check on it during OpenHack!		[https://github.com/clindsa1 Chris Lindsay] has [https://github.com/baltimorenode/mega-nodesign revived] the Node Sign project. Come check on it during OpenHack!
	[[File:Sign Logo.jpg\|alt=A pixel-art version of the Baltimore Node logo rendered on a wall of LED's, an array of RGB Christmas lights.\|thumb\|A custom Node Logo rendered on the sign during OpenHack.]]		[[File:Sign Logo.jpg\|alt=A pixel-art version of the Baltimore Node logo rendered on a wall of LED's, an array of RGB Christmas lights.\|thumb\|none\|A custom Node Logo rendered on the sign during [https://www.meetup.com/BaltimoreNode/events/ OpenHack].]]

	==Classic Project (2011-2012)==		==Classic Project (2011-2012)==

P2: Added a photo of the sign displaying a Node logo

2019-01-20T03:47:33Z

Added a photo of the sign displaying a Node logo

← Older revision		Revision as of 03:47, 20 January 2019
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	== Current Status (2018-2019) ==		==Current Status (2018-2019)==
	Chris has revived the Node Sign project. Come check on it during OpenHack!		[https://github.com/clindsa1 Chris Lindsay] has [https://github.com/baltimorenode/mega-nodesign revived] the Node Sign project. Come check on it during OpenHack!
			[[File:Sign Logo.jpg\|alt=A pixel-art version of the Baltimore Node logo rendered on a wall of LED's, an array of RGB Christmas lights.\|thumb\|A custom Node Logo rendered on the sign during OpenHack.]]

	== Classic Project (2011-2012) ==		==Classic Project (2011-2012)==
	Collecting notes for the LED window display.		Collecting notes for the LED window display.
	===System Architecture===		===System Architecture===

P2: Note that this project has been revived by Chris. Minor formatting adjustments.

2019-01-20T03:29:29Z

Note that this project has been revived by Chris. Minor formatting adjustments.

← Older revision		Revision as of 03:29, 20 January 2019
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			== Current Status (2018-2019) ==
			Chris has revived the Node Sign project. Come check on it during OpenHack!

			== Classic Project (2011-2012) ==
	Collecting notes for the LED window display.		Collecting notes for the LED window display.
			===System Architecture===

	= System Architecture =
	The full breakdown of the architecture works as follows:		The full breakdown of the architecture works as follows:

	(outside internet?) --> Client programs --> Server --> Arduino --> GE color effect lights		(outside internet?) --> Client programs --> Server --> Arduino --> GE color effect lights

	= GE Color effect lights =		===GE Color effect lights===

	These are individually addressable lights made by GE. Robert Sun Quattlebaum figured out their data protocol. You can find out more here.		These are individually addressable lights made by GE. Robert Sun Quattlebaum figured out their data protocol. You can find out more here.
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	We've bought a power supply for Sherwin's lights.		We've bought a power supply for Sherwin's lights.

	=== TODO ===		====TODO====
	* Kevin, can you document how much power it takes to drive the lights?
	* For our lights		*Kevin, can you document how much power it takes to drive the lights?
	** We need to buy a power supply for our top display.		*For our lights
	** We need to wire everything up.		**We need to buy a power supply for our top display.
	** We need to decide on and complete the physical construction of our lights. This involves cutting the lights, soldering lights together, cutting holes in boards to hold the lights.		**We need to wire everything up.
	* For Sherwin's lights		**We need to decide on and complete the physical construction of our lights. This involves cutting the lights, soldering lights together, cutting holes in boards to hold the lights.
	** Some of the strands on Sherwin's display are buggy and need to be replaced.		*For Sherwin's lights
			**Some of the strands on Sherwin's display are buggy and need to be replaced.

	= Arduino =		===Arduino===

	For the arduino side of the code, we are using code from the QC Co-Lab's Lightwall Project. You can find their write up of their code here:		For the arduino side of the code, we are using code from the QC Co-Lab's Lightwall Project. You can find their write up of their code here:
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	Delays in the code have been set using an oscilliscope on an duemilanova atmega328		Delays in the code have been set using an oscilliscope on an duemilanova atmega328

	=== TODO ===		====TODO====

	* The code we're using now disables all interrupts while it's writing to the lights because it wants to get the timing absolutely correct. This means that it can't recieve any serial data. We've fixed this by having the arduino write an "OK" back to the server, and make the server pause until it recieves this go-ahead. If this creates too much slowdown though, we need to tmplement the writing of the lights as an interrupt routine, which would require a bunch of work. Doing things the interrupt way would shave off 12.28ms from the render time.		*The code we're using now disables all interrupts while it's writing to the lights because it wants to get the timing absolutely correct. This means that it can't recieve any serial data. We've fixed this by having the arduino write an "OK" back to the server, and make the server pause until it recieves this go-ahead. If this creates too much slowdown though, we need to tmplement the writing of the lights as an interrupt routine, which would require a bunch of work. Doing things the interrupt way would shave off 12.28ms from the render time.

	= Server =		===Server===

	The server is a python twisted program that listens to an internet port and recieves 24 bit color frames on that port. It also does the bit transposition and color reduction needed to quickly display the 12bit color frames colors on the arduino.		The server is a python twisted program that listens to an internet port and recieves 24 bit color frames on that port. It also does the bit transposition and color reduction needed to quickly display the 12bit color frames colors on the arduino.
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	The code is made up of		The code is made up of
	* write_image.py - does the bit transposition of a color frame.
	* lightDisplay.py - contains all the code for the server.
	** LightWallServer - contains the twisted code for the server. A server is made for each client that connects.
	** BaseSignDisplay - implements a mutex on the sign display shared by all the server processes
	** InMemorySignDisplay - implements a fake lightwall with pygame on your desktop so you can test out various displays without connecting them to the lights.
	** SignDisplay - implements the code that does the actual writing to the serial port.

	=== TODO ===		*write_image.py - does the bit transposition of a color frame.
	* The code to find all the arduinos attached needs to be written.		*lightDisplay.py - contains all the code for the server.
	* For Sherwin's lights we'll need a new Display that writes to 4 arduinos at once. Mike and I have been debating if it's going to be a horrible chore to keep the arduinos syncronized.		**LightWallServer - contains the twisted code for the server. A server is made for each client that connects.
			**BaseSignDisplay - implements a mutex on the sign display shared by all the server processes
			**InMemorySignDisplay - implements a fake lightwall with pygame on your desktop so you can test out various displays without connecting them to the lights.
			**SignDisplay - implements the code that does the actual writing to the serial port.

			====TODO====

			*The code to find all the arduinos attached needs to be written.
			*For Sherwin's lights we'll need a new Display that writes to 4 arduinos at once. Mike and I have been debating if it's going to be a horrible chore to keep the arduinos syncronized.

	= Clients =		===Clients===
	The clients all connect to the server and take turns taking control of the display. I've implemented a trivia game, and will be implementing more clients in the server. I've also implemented an effects code and some code to render text in 8 bits.		The clients all connect to the server and take turns taking control of the display. I've implemented a trivia game, and will be implementing more clients in the server. I've also implemented an effects code and some code to render text in 8 bits.

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	https://github.com/rblake/BmoreNodeSign		https://github.com/rblake/BmoreNodeSign

	* lightDisplay.py - Contains the code for the client.		*lightDisplay.py - Contains the code for the client.
	** LightDisplayClient - Implements a twisted client for the display.		**LightDisplayClient - Implements a twisted client for the display.
	* rainbow.py - Implements a rainbow animation on the lights, based off of Rainbow Plasma		*rainbow.py - Implements a rainbow animation on the lights, based off of Rainbow Plasma
	* triviaGame.py - Code for my trivia game! A work in progress.		*triviaGame.py - Code for my trivia game! A work in progress.
	* singleFrame.py - Shows a single frame on the screen and exits.		*singleFrame.py - Shows a single frame on the screen and exits.
	* loopFrames.py - Loops static images over all the frames		*loopFrames.py - Loops static images over all the frames

			====TODO====

	~~=== TODO ===~~		*I need to implement a routine that sends the current display to the client so I can do more effects.
	* I need to implement a routine that sends the current display to the client so I can do more effects.		*THERE IS NO ERROR CHECKING! Someone should fix this.
	* THERE IS NO ERROR CHECKING! Someone should fix this.		*Clients I'd like to implement:
	* Clients I'd like to implement:		**Video games! We have enough of a framework to do this!
	** Video games! We have enough of a framework to do this!		**A weather/temp/time client
	** A weather/temp/time client		**riddles?
	** riddles?		**Something to read off of twitter? Twisted has code to do the heavy lifting here.
	** Something to read off of twitter? Twisted has code to do the heavy lifting here.		**Something to read off IRC? Again, Twisted has code to do this.
	** Something to read off IRC? Again, Twisted has code to do this.		**Conway's game of life.
	** Conway's game of life.		**Code to draw animations.
	** Code to draw animations.		**Something to pipe "fortune" to the display.
	** Something to pipe "fortune" to the display.		**Something to screen scrape wikipedia for historical facts that happened today.
	** Something to screen scrape wikipedia for historical facts that happened today.		**Grab Node/LOF events from google or meetup, post them.
	** Grab Node/LOF events from google or meetup, post them.		**Tetris!
	** Tetris!

	= Art =		===Art===
	We need art that we can display both on Sherwin's lights and our lights.		We need art that we can display both on Sherwin's lights and our lights.

	Our lights will be 64x8 pixels. Sherwin's display is 24x47 pixels.		Our lights will be 64x8 pixels. Sherwin's display is 24x47 pixels.

	=== TODO ===		====TODO====
	* We need an /awesome/ node logo for both displays
	* We need awesome animations		*We need an /awesome/ node logo for both displays
	* I found a collection of 8 pixel fonts taken from old game boy games. These need to be cleaned up so they can be used. I'll write up more on this soon-- Dani and I have come up with a font system.		*We need awesome animations
			*I found a collection of 8 pixel fonts taken from old game boy games. These need to be cleaned up so they can be used. I'll write up more on this soon-- Dani and I have come up with a font system.

Rob Blake: /* TODO */

2012-08-30T14:40:48Z

TODO

← Older revision		Revision as of 14:40, 30 August 2012
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	[[File:Node.png]]		[[File:Node.png]]
	[[File:Node2.bmp]]		[[File:Node2.bmp]]
			[[File:Lemmings.png]]
	‎		‎
	http://dmac.comdma.com/wp-content/uploads/2008/11/Event3-BenDunkle_L.jpg		http://dmac.comdma.com/wp-content/uploads/2008/11/Event3-BenDunkle_L.jpg

Rob Blake: /* TODO */

2012-08-30T14:33:56Z

TODO

← Older revision		Revision as of 14:33, 30 August 2012
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	http://www.flickr.com/groups/56856146@N00/		http://www.flickr.com/groups/56856146@N00/

			http://lpc.opengameart.org/

Rob Blake: /* TODO */

2012-08-29T16:16:48Z

TODO

← Older revision		Revision as of 16:16, 29 August 2012
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	[[File:Todds 8 tall font all in caps.bmp]]		[[File:Todds 8 tall font all in caps.bmp]]
	[[File:Node.png]]		[[File:Node.png]]
			[[File:Node2.bmp]]
	‎		‎
	http://dmac.comdma.com/wp-content/uploads/2008/11/Event3-BenDunkle_L.jpg		http://dmac.comdma.com/wp-content/uploads/2008/11/Event3-BenDunkle_L.jpg