The folks of the London HackSpace are been so kind to donate 52 wonderful LED panels :
with documentation as well!
@Howard made some calculations yesterday, they need 5v / 7A to drive all the LEDs at the same time , and you will need a beefy MCU to drive it all the ((1024 x 8 bit) x 3) LEDs , the good thing is that is basically glue logic so the speed is limited by the MCU.
this thing scream jumbotron or at least the brightest installation for the next EMFCamp.
Just a heads up these were accidentally my fault, 8-10 of them are intended for me, the others were accidental surplus.
THIS!
Are on top of the 3D printing bench
I like the look of these but they still aren’t what I’m looking for for Luke’s iBus display. By the time I find the right led matrix they’ll have moved over to LCDs!
There were 4 boxes donated to hackspaces - 3 boxes went to 6 LHS members in the end and the other one was split between you and Wembley as Wembley is dormant at the moment you got 2/3 of that box 
- two of the guys who took a box then realised they had more than they wanted and spread it around a few more people, so Tom if you want another 10 let me know - if you can collect I am fairly often at SMEE which is a round the corner or LHS
Jon one of the member at LHS has put his code on GITHUB @ https://github.com/JonRussell00/LEDpanels
actually I missed an important point that these were donated / made available to Hackspaces through Tom of http://www.digiled.com/
Regarding driving the boards to quote Tom
"Alternatively, if you’re happy to buy off-the-shelf kit, you can purchase the controller cards (we call the scan cards) from the web here : http://www.led-card.com/led-receiver-board.html
To quirt video into these cards you’ll then need an LED sender card (think of it as a DVI capture card to convert to LED tile protocol) : http://www.led-card.com/led-sending-card.html
Originally these LED panels ran on the Linsn family of Sender and Scan but there’s no reason you couldn’t go for the more common NovaStar or similar instead.
All you’ll need then to light them up is a hub card (to distribute the power and data from the Scancard) and some 5v DC power.
"
Whats left in the space is exactly enough by my estimations to make a 1M by 1.25M display (40 panels). which would require:
A few people on Telegram said they wanted to set one up at Makerspace, if that is the case it would be good for them to come forward and steak a claim before these end up disappearing into people’s personal hoards.
Worth remembering I still have these at work they can do 35A / 5V: https://discourse.southlondonmakerspace.org/t/electronics-stuff/5476
That’s a huge amount of power. Would it really need this much in practice?
Were the calculations based on all LEDs switched on at once? Isn’t that unlikely if displaying video?
7a is full brightness white yes.
So we can probably do a 4:3 display using 48 modules
It’ll be 2M x 1.5M, require 336 amp at full power.
I think we’d need:
1x http://www.led-card.com/novastar-mctrl300-led-real-time-sending-box.html
3x http://www.led-card.com/novastar-mrv336-led-display-receptor.html
and power, lots of it.
Is this something members are going to do, where will it go and how will we fund it?
Very good!
I’m taking it from the silence that members aren’t really interested in making this happen/spending the money etc…?
I have some ideas for how I could use one personally, but making a mega screen sounds awesome.
Would be cool to have a big LED panel in the car park or something 
That would be really cool but we don’t have the space and run it would be expensive, I honestly think that would be great to make small project out of them instead of one big.
I’m getting in the software side of it, I’m planning to use mbed with a lpc1769, should be fast enough to pump data to the screens.
Yeah, it’s crazily power hungry… But fun.
but is like , £400 of logic without the power supply 
Thats perfect, I’ll take the rest of what I needed and whats left will be available for members to use, or I will dispose of them through WEEE or London Hackspace members in 2 months or so.
I would be happy to have one or two then.
moi aussi
