Giant RGB LED screen?
Rayman
Posts: 13,889
in Propeller 2
Ok this might be fantasy, but I see $15 32x32 RBG LED panels at Sparkfun.
Says you need FPGA or high-speed processor to work it...
But I'm thinking that a 9x7 array of these would give the PacMan/Galaga resolution.
Be about 6' tall.
Cost is just shy of $1000...
Says you need FPGA or high-speed processor to work it...
But I'm thinking that a 9x7 array of these would give the PacMan/Galaga resolution.
Be about 6' tall.
Cost is just shy of $1000...
Comments
You can also get 64x64 led panels from Aliexpress around the $25 mark, that'd halve your cost
We had a fair the other weekend which prompted me to finish a P1 based "many-ws2812" hardware driver. It's basically a propeller activity board with the biggest 12v to 5v dc/dc converter I could find (Delta D12S400A, 400 watts) mounted on it. It's a good match for what ATX power supplies put out on their +12v rails, ~ 40 or 50 amps, or big SLA cells (105Ah). It should drive 1600 leds at full brightness, during testing we had 2200 leds running chasing patterns just fine. You could use one converter per row or column. The thing draws 750mA quiescent (!) and needs a fan to stop itself cooking. I think i'll add a second fan for backup...
I guess I need to decide on the scan. Sparkfun says they made a mistake when they ordered those 1/8 scan boards when most are 1/16 scan.
1/8 scan seems better to me but maybe it doesn't make a difference for something slow.
Also, it's a bit of a waste to do 64x64 as I'd not use 32 rows and 32 columns..
But, that may be more economical.
Also, the Aliexpress ones all look small at 6.3"x6.3". The Sparkfun ones have > 4x the area.
Need to think about how giant I want the screen to be...
Also, I need to figure out where in the house it could go...
In the P3, we will be able to input HDMI, so we can buffer screen information and relay it out through any mechanism, like to these pixel arrays.
Wow, either you really love designing unique mpu's or you're a glutton for punishment. Either way I hope I can hang around long enough to see what you create.
Probably the most boring addition possible. But, with a shrink, comes speed, and with that, larger programs.
Yeah, several of us noted that. I do think waiting for a shrink is a good move. What we got is awesome.
Personally, I think a COG dedicated to this task, and programs written to signal it, will pack a big punch. Won't be automatic, but could be easy.
I love you.
P.D.: Now I realized that it is not P2.
I don't know! Perhaps.
I have never had an aliexpress buy go bad. Transactions are done in escrow so they don't get paid until after you receive and approve the goods.
Maybe more like the Atari 8 bit, since it was the first child of Jay Miner. (not counting the Atari VCS) I think Chip is the Jay of microcontrollers; Thinking outside the box and asking questions like "what if?", "why not?" and "why is this even the norm?".
/Johannes
I saw a space invaders machine in Lake Tahoe like that.
I saw it at a laser tag place:
https://www.libertygames.co.uk/store/video_arcade_machines/shooting_arcade_machines/space-invaders-frenzy/
Looks like >$20k...
I found galaga and pac man versions on youtube.
Hammacher Schelmmer sells the pac man for $11k:
https://www.hammacher.com/product/worlds-largest-pac-man
Just think about all the money I can save doing it myself
My GF would say, "Just think about the money you can SPEND by doing it your self" and would then probably ask something like "Is that a 'want' or a 'need'".
.... then I would do it anyway and we would get into that discussion about how I never listen to her and always just do what I want anyway and I think "I do what I want when Im right and your wrong" but bite my tongue.
You can get small dedicated controllers for them and just send the data to it.
Order individual modules and assemble yourself or get kits.
My project was going to use super accurate RTC and be used for lap times, racer names, etc...