Rainbow LED - bit-tech.net Forums

macroman · 27th Aug 2002, 16:12

I hope it was worth the wait

http://www.bit-tech.net/article/92

MajestiX · 27th Aug 2002, 16:27

nice work macro as always....

how bout somepics of it working or avi???

Cheers,
MajestiX.

i_h8clowns · 27th Aug 2002, 16:34

thanks macroman!

: D

i_h8clowns · 27th Aug 2002, 17:04

this is the LED i am going to use. it has one less blue anode and common cathode than the LED you use. but there shouldnt be any difference right?

macroman · 27th Aug 2002, 17:16

Quote:

Originally posted by i_h8clowns
this is the LED i am going to use. it has one less blue anode and common cathode than the LED you use. but there shouldnt be any difference right?

There are differences but it should work ok. You may need to change the resistors R1-3 to match the brightness?

Phire - why did you delete your post?

Ice-T · 27th Aug 2002, 23:02

Hello Macroman,

Is it possible to use three different LEDs instead of one RGB LED?

BTW, we really need some pics and a video!!

Keep up the good work.

RaptorLord · 27th Aug 2002, 23:04

Theoretically speaking, with 1024 columns and 768 rows (if they are 3mm) that would give me a nice 3+ meter screen.... now, where to find a converter to convert a VGA signal to some sort of active matrix LED driver...

Cheese · 27th Aug 2002, 23:06

Very nice work Dave - time to get my iron out I think

r.

macroman · 27th Aug 2002, 23:09

Quote:

Originally posted by Ice-T
Hello Macroman,

Is it possible to use three different LEDs instead of one RGB LED?

BTW, we really need some pics and a video!!

Keep up the good work.

Thanks
As stated in the article getting a good vid is damn near impossible with the kit I have. The led just whites out the picture and doesn't appear to do much!

I will keep trying and see what I can come up with.

Ice-T yes

P5ycho · 28th Aug 2002, 00:50

How about recording the reflection on an object, a wall or something?

Yammosk · 28th Aug 2002, 14:16

if the led's are brite enough a reflection of the hand is really quite easy to get on camera!!!

Yammosk

Fly · 28th Aug 2002, 14:39

Macro, I really want to do this but due to lack of skills I cant do the curcuit board thingy. What is the easiest way of creating one? and what do I need?

macroman · 28th Aug 2002, 19:04

The PCB making article should be up this week. ( Maplin sell everything you need

).

Fly · 28th Aug 2002, 19:22

close to home then...

bee2643 · 29th Aug 2002, 02:38

nice job
any way we can see a video of it in action?

Kinsy · 29th Aug 2002, 14:33

nice work dude, however i do want to take it a bit further...

if i wanted to wire up, say, 8 more tricolour leds to the circuit, would i have to build 9 separate circuits or could i run them all off one?

also potentially, could i wire them up so at any one time, 3 are green, 3 are red, and 3 are blue, and as they change colour they shift colour along a line of them, like a chaser?

macroman · 29th Aug 2002, 15:18

As it stands the circuit is designed to run one led only. The transistor stage could be redesigned to run more leds.

As for the chaser idea, the way to do it would be to repeat the IC2/transistor parts for each section and drive them all from the same clock (IC1).

Kinsy · 30th Aug 2002, 02:05

nice, but...

how dyou do that! all i can do is solder! making the hdd light kit of yours was nice and easy thanks to the diagram and a list of components...

would it be too much to ask if you could possibly draw me up a wiring diagram for 9 leds ala chaser idea with a list of components pleeeese?

be very much appreciated

brumster · 31st Aug 2002, 13:36

Quote:

Originally posted by macroman
The PCB making article should be up this week. ( Maplin sell everything you need ).

Will it have instructions on how to make PCBs without using:
a) laser printer (dont have 1)
b) UV box (cant afford 1) or
c) drawing by hand (urgh)

or... how about some nice person out there actually making me one of the 10 individual LED version PCBs? Of course I'd be more than happy to pay you for your time and materials

And if that was possible (starts to push his luck) could you make me one of those rainblow effect PCBs too?

GigglesOfDoom · 3rd Sep 2002, 20:25

What all would need to be changed for this to run on a 5V power source? Is it even possible with the ICs and transistors? Many of the LED headers in a PC are 5V, which is why I ask.

27th Aug 2002, 16:12	#1
macroman The One Moderator Join Date: Sep 2001 Location: U.K. Posts: 1,845	Rainbow LED I hope it was worth the wait http://www.bit-tech.net/article/92

27th Aug 2002, 16:34	#3
i_h8clowns Join Date: Sep 2001 Location: san diego, california Posts: 43	w00t! thanks macroman! : D

28th Aug 2002, 14:16	#11
Yammosk Multimodder Join Date: Mar 2002 Location: Australia Posts: 89	if the led's are brite enough a reflection of the hand is really quite easy to get on camera!!! Yammosk __________________ PC Stats 2100+ Athlon XP, 1.5gig 333 DDR, MSI KT4 Ultra, 120 GIG SATA Maxtor Calypso, 40 gig Quantum 7200rpm , Gforce 4 TI 4200 128 meg , Pioneer 16x Slot DVD , 40x12x40 BTC Burner

28th Aug 2002, 14:39	#12
Fly inter arma silent leges Moderator Join Date: Aug 2001 Location: London, UK Posts: 3,741	Macro, I really want to do this but due to lack of skills I cant do the curcuit board thingy. What is the easiest way of creating one? and what do I need? __________________ "Flying is simple; push on the stick and the houses become bigger, pull back on the stick and houses become smaller, unless you keep pulling in which case the houses will become bigger again..." Disce quasi semper victurus; vive quasi cras moriturus.

28th Aug 2002, 19:22	#14
Fly inter arma silent leges Moderator Join Date: Aug 2001 Location: London, UK Posts: 3,741	close to home then... __________________ "Flying is simple; push on the stick and the houses become bigger, pull back on the stick and houses become smaller, unless you keep pulling in which case the houses will become bigger again..." Disce quasi semper victurus; vive quasi cras moriturus.

27th Aug 2002, 16:27	#2
MajestiX Multimodder Join Date: Apr 2002 Location: Australia Posts: 122	nice work macro as always.... how bout somepics of it working or avi??? Cheers, MajestiX.

27th Aug 2002, 17:04	#4
i_h8clowns Join Date: Sep 2001 Location: san diego, california Posts: 43	this is the LED i am going to use. it has one less blue anode and common cathode than the LED you use. but there shouldnt be any difference right?

27th Aug 2002, 23:02	#6
Ice-T What's a Dremel? Join Date: Aug 2002 Posts: 1	Hello Macroman, Is it possible to use three different LEDs instead of one RGB LED? BTW, we really need some pics and a video!! Keep up the good work.

27th Aug 2002, 23:04	#7
RaptorLord Multimodder Join Date: Aug 2002 Location: Detroit, MI. USA Posts: 151	Theoretically speaking, with 1024 columns and 768 rows (if they are 3mm) that would give me a nice 3+ meter screen.... now, where to find a converter to convert a VGA signal to some sort of active matrix LED driver...

27th Aug 2002, 23:06	#8
Cheese Doc Join Date: Oct 2001 Location: Cambridge, UK. Posts: 4,609	Very nice work Dave - time to get my iron out I think r.

28th Aug 2002, 00:50	#10
P5ycho What's a Dremel? Join Date: Aug 2002 Posts: 1	How about recording the reflection on an object, a wall or something?

28th Aug 2002, 19:04	#13
macroman The One Moderator Join Date: Sep 2001 Location: U.K. Posts: 1,845	The PCB making article should be up this week. ( Maplin sell everything you need ).

29th Aug 2002, 02:38	#15
bee2643 KickassAMD Join Date: Mar 2002 Location: Port Coquitlam, BC (CAND) Posts: 1,769	nice job any way we can see a video of it in action? __________________ -bEE2643 ]\|[ E-Mail ]\|[ URL ]\|[ MSN:ask by emailing ]\|[

29th Aug 2002, 14:33	#16
Kinsy What's a Dremel? Join Date: Jan 2002 Location: Loughboro or Bournemouth, UK Posts: 10	nice work dude, however i do want to take it a bit further... if i wanted to wire up, say, 8 more tricolour leds to the circuit, would i have to build 9 separate circuits or could i run them all off one? also potentially, could i wire them up so at any one time, 3 are green, 3 are red, and 3 are blue, and as they change colour they shift colour along a line of them, like a chaser? __________________ f**k me, isnt that going to take off?

29th Aug 2002, 15:18	#17
macroman The One Moderator Join Date: Sep 2001 Location: U.K. Posts: 1,845	As it stands the circuit is designed to run one led only. The transistor stage could be redesigned to run more leds. As for the chaser idea, the way to do it would be to repeat the IC2/transistor parts for each section and drive them all from the same clock (IC1).

30th Aug 2002, 02:05	#18
Kinsy What's a Dremel? Join Date: Jan 2002 Location: Loughboro or Bournemouth, UK Posts: 10	nice, but... how dyou do that! all i can do is solder! making the hdd light kit of yours was nice and easy thanks to the diagram and a list of components... would it be too much to ask if you could possibly draw me up a wiring diagram for 9 leds ala chaser idea with a list of components pleeeese? be very much appreciated __________________ f**k me, isnt that going to take off?

3rd Sep 2002, 20:25	#20
GigglesOfDoom What's a Dremel? Join Date: Sep 2002 Posts: 2	5V? What all would need to be changed for this to run on a 5V power source? Is it even possible with the ICs and transistors? Many of the LED headers in a PC are 5V, which is why I ask.