3x3x3 LED Cube - can i use16f628 instead 16f690

birdman0_o

Active Member

• Dec 9, 2009

• #221

It can be done, if you use driver transistors. Which you should be using anyways

 

be80be

Well-Known Member

• Dec 9, 2009

• #222

There not 15 pins that can be output porta4 is open drain porta5 is input only
on the 16f628a

 

birdman0_o

Active Member

• Dec 9, 2009

• #223

you can use both pin ra4 and ra5 if you tie them high and use a transistor.

 

be80be

Well-Known Member

• Dec 9, 2009

• #224

Sure you can but you'll have to rewrite the whole code almost

 

birdman0_o

Active Member

• Dec 9, 2009

• #225

He's going to need to do that anyways with a 3x3x6, If it were up to me I'd say change it up for a pic16f88

 

C

colin55

Well-Known Member

• Dec 9, 2009

• #226

Here is a simple 3x3x3 circuit using 2 IC's to drive 27 white LEDs. The 4020 IC is a 14 stage binary counter - 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.
**broken link removed**

 

Last edited: Dec 9, 2009

birdman0_o

Active Member

• Dec 9, 2009

• #227

The analog vs. digital war continues

 

be80be

Well-Known Member

• Dec 9, 2009

• #228

LoL Colins thats Cool but not much room for change if you just wanted to blink leds

 

Sceadwian

Banned

• Dec 9, 2009

• #229

Yeah birdman, I'm not sure what you mean by war =\ While the 555 and decade counter circuit will work nicely for simple (hey I'm here) blinking you can't program it readily, not with a lot of extra gates and shift registers, where as with a micro controller you can replicate any pattern your mind can conceive of.

 

be80be

Well-Known Member

• Dec 9, 2009

• #230

Now collins said 512 different patterns but the 4020 is bad to miss a clock or two so it may never blink the same thing over

 

Sceadwian

Banned

• Dec 9, 2009

• #231

It doesn't repeat 512 different patterns. It's a single pattern that takes 512 cycles to repeat. Most people won't even recognize a pattern is occurring.

 

Last edited: Dec 9, 2009

be80be

Well-Known Member

• Dec 9, 2009

• #232

Sceadwian said:

It doesn't repeat 512 different patterns. It's a single pattern that takes 512 cycles to repeat. Most people won't even recognize a pattern is occurring.

Click to expand...

Sceadwian Colins said 512 different patterns it could change if you read the data sheet the 4020 is bad to skip a clock. But if not you get just one pattern LOL just a long one

 

birdman0_o

Active Member

• Dec 9, 2009

• #233

Now people are going to ask if they can use colin's schematic with RA4.... LOL

 

T

turker

New Member

• Dec 10, 2009

• #234

4x4x4

4X4X4 cube...

 

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kssoin

New Member

• Dec 10, 2009

• #235

I came across a 5X5X5 cube here
LED Cube Matrix Driver

I am constructing the 3X3X3 cube first and get to know PIC's

 

Last edited: Dec 10, 2009

birdman0_o

Active Member

• Dec 10, 2009

• #236

Did you make that yourself turker?

 

T

turker

New Member

• Dec 10, 2009

• #237

birdman0_o said:

Did you make that yourself turker?

Click to expand...

no..i didn't make myself but i installed that circuit, these circuit's working..

 

T

turker

New Member

• Dec 10, 2009

• #238

**broken link removed**

 

birdman0_o

Active Member

• Dec 10, 2009

• #239

Congrats
I hope that wasn't a shot at bebe after all the support he has provided for this project!

 

T

turker

New Member

• Dec 10, 2009

• #240

absolutly no..the most important point is sharing..