An interesting project and already much discussed in the forums and also in videos.
Although it appears complex,it is a simple idea and fun very purpose.
Mounting material:
- 27 LEDs matte
- Microprocessor ATmega8
- Electrolytic capacitor 47UF 16V
- Veroboard
- Small wood board at the minimum 10x10cm
- 50 cm wire tinned
(excuse me, I'm portuguese and my english is not very famous :p)
Although it appears complex,it is a simple idea and fun very purpose.
Mounting material:
- 27 LEDs matte
- Microprocessor ATmega8
- Electrolytic capacitor 47UF 16V
- Veroboard
- Small wood board at the minimum 10x10cm
- 50 cm wire tinned
(excuse me, I'm portuguese and my english is not very famous :p)
Remove these ads by
Signing UpStep 1: Theory of operation of the array of LEDs
The array of LEDs is comprised of 3x9, where three levels are horizontal, and 9 are the vertical rows.
Each LED is turned on a level with a common cathode and each vertical line is connected with a common anode.
So if we want to illuminate a particular LED, just put the level of the 0V line and gave a positive voltage.
To be able to generate an effect of several LEDs on, they have to be powered by multiplexing, a relatively high speed does not seem to be blinking and have a softer light.
As the ATmega8 supports connection of LEDs directly to its pins with a good current, there is no need to put limitation resistors or transistors driver.
Each LED is turned on a level with a common cathode and each vertical line is connected with a common anode.
So if we want to illuminate a particular LED, just put the level of the 0V line and gave a positive voltage.
To be able to generate an effect of several LEDs on, they have to be powered by multiplexing, a relatively high speed does not seem to be blinking and have a softer light.
As the ATmega8 supports connection of LEDs directly to its pins with a good current, there is no need to put limitation resistors or transistors driver.
Visit Our Store »
Go Pro Today »
Great Job.
Could you share your code effects with me, please?
.
How you programm ground for layers?
Thanks!
A lot of work to develop this project and we can only "give" this micro programmed, if you're interested.
and play O's and X's with 2 color led's!! would be very nice
not fair...
Sorry if you think it is unfair!..Where is your fairplay?!.. ?:/
I've been watching the video and is amazing, never seen so many effects together in a cube of leds and with so few components
Good job, 5 stars
Can you explain what you meant when you said this?
"As the terminals of the LEDs are not sufficient to make the 12 connections, you can use one wire tinned in order to be more esthetic final result."
Your video is magnificent and the effects are many and beautiful! :)