LED Cube Using 4020 Ic and 555 IC
Intro: LED Cube Using 4020 Ic and 555 IC
This circuit drives a 3x3x3 cube consisting of 27 white LEDs. The 4020 IC is a 14 stage binary counter and we have used 9 outputs. Each output drives 3 white LEDs in series and we have omitted a dropper resistor as the chip can only deliver a maximum of 15mA per output. The 4020 produces 512 different patterns before the sequence repeats and you have to build the project to see the effects it produces on the 3D cube.
in 4020 IC the reset pin should not be left free it must be connected to the ground with 100 nf capacitor.If it is not connected the IC will reset againĀ andĀ again there will be no output in the output pins.
The speed of the LEDs is controlled by a 10k variable resistance connected to the 555 IC
And the capacitor connected to the 555 IC is 22 uf .
http://www.youtube.com/watch?v=yvYjAe-EuiQ&feature=youtu.be
in 4020 IC the reset pin should not be left free it must be connected to the ground with 100 nf capacitor.If it is not connected the IC will reset againĀ andĀ again there will be no output in the output pins.
The speed of the LEDs is controlled by a 10k variable resistance connected to the 555 IC
And the capacitor connected to the 555 IC is 22 uf .
http://www.youtube.com/watch?v=yvYjAe-EuiQ&feature=youtu.be
16 Comments
ouldcherchali.n2017 6 years ago
good job
MayureshT2 7 years ago
where is the 3rd terminal 10k pot connected
Bris32 6 years ago
It is being used as a variable resistor so only sweep arm and one fixed terminal are used
Downunder35m 8 years ago
This is a blant copy from this website.
Even the text is just copied.
At this stage I assume it to be a fraudulent copy with no credit given to the original author as I don't think Colin Mitchell would use Ahimadu as a username...
Downunder35m 8 years ago
Of course also to be found on
http://www.555-timer-circuits.com/3x3x3-cube.html
Where the circuit diagram was taking from.
JadenP 9 years ago
It was a great little project.
cobaia 10 years ago
hello I have a problem, I rode the original circuit but do not know what goes into the cube are to be switched on and off like a flip flop
someone help me?
thank you
adhimadhu 9 years ago
check the connection. and check 10 k variable resistor...
cobaia 9 years ago
its a live thank you very much
bharat.yash 10 years ago
adhimadhu 9 years ago
sorry for late reply..
refer the new image ..
nsielaff23 10 years ago
Ok, so I have almost "made it". The bottom layer is giving me grief. When I ground it, the other two layers go out. When I send the top and middle layers to ground without the bottom layer they work fine. Consequently, grounding the top two layers leaves the bottom layer actually faintly glowing with the patter of the others.???? I have checked for shorts and double checked connections???? Can't seem to find the cause.
I also found that a 22uf Capacitor in conjunction with a 200 Ohm resistor produces a nice fast speed. This is with a 9v battery. A 1K potentiometer might be a great choice for adjustable speed. I spent a little time designing a Fritzing PCB for anyone interested in trying it out. Here is the OSH Park link: http://oshpark.com/shared_projects/jP3Ri1Oo
Attached is the Fritzing image.
Help if you can???
Hope the PCB makes this fun project just a little easier for someone!
bharat.yash 10 years ago
sidhuanil07 10 years ago
Amit_Jain 10 years ago
Does Red line indicate actual connection or just for visualization ?
Can you also post a better picture of the LED cube
Thanks
Amit
adhimadhu 10 years ago
check the new image ,you can understand the circuit clearly with this picture...