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Brads Electronic Projects Forum • Table not doing much - Page 5
Page 5 of 7

Re: Table not doing much

Posted: Sun Dec 09, 2012 10:28 pm
by cnribbens
I first started looking for dark acrylic, but everything was crazy expensive (100 dollars for a small piece), so white instead. And I even think white is probably better, makes the table a little more light/happy.

Image

Re: Table not doing much

Posted: Mon Dec 10, 2012 5:34 am
by brad
$100 a piece seems a bit expensive. However, the white acrylic looks great!

Re: Table not doing much

Posted: Mon Dec 10, 2012 6:17 am
by Saimaster13
I found some dark tinted acrylic at Home Depot for pretty cheap, $25 for a nice sized piece. It is more of a slightly dark tint, but with the protective cover on it it diffuses lights nicely. I plan on using it for an 8x8 gaming thing, kind of like Retroball.

Re: Table not doing much

Posted: Mon Dec 10, 2012 7:14 am
by cnribbens
Well we don´t have Home Depots in the Netherlands, hahaha :D

And the dark tinted piece was really thick so I guess that also increases the price.

Re: Table not doing much

Posted: Mon Dec 10, 2012 7:16 am
by Saimaster13
Ahh...

Re: Table not doing much

Posted: Sat Dec 15, 2012 6:11 am
by cnribbens
And we have progress, the screen works so that´s cool and the acrylic really helps.

I still need to swap + and - for two potentiometers. And because of the extra layers of paint the glass doesn't fit anymore :oops: so I'll fix that with a dremel. And then we have a working retroball custom build!!! :mrgreen: :mrgreen: :mrgreen:

And it indeed flickers, but that's the next step with the crystal!

So here's a movie :!:

http://s303.beta.photobucket.com/user/W ... 0.mp4.html

Re: Table not doing much

Posted: Sat Dec 15, 2012 9:22 pm
by cnribbens
Ok, so I fixed the controls, placed everything together and the glass now fits. And the pong game is really cool, brad!!! So much better than the early instructables version

Re: Table not doing much

Posted: Sun Dec 16, 2012 6:56 pm
by brad
Any chance of a video of how it runs?

I might have to wait to look into fixing the flicker problem for over my Christmas break. Will let you know how it goes though :)

Re: Table not doing much

Posted: Sun Dec 16, 2012 9:28 pm
by cnribbens
So here a video of the latest state of the table.



I'm not really in a hurry, because now I don't have have a whole bunch of parts lying around. I'm already happy that you want to take the time to fix the code. So thumbs up!

I'll buy a crystal at my local electronics shop 20 mhz and I already have some caps lying around. So I'll make the hacky crystall add on board following the schematic of bitfogav

BTW I saw in the code there's also a speaker/sound in the retroball version. Are you just generating beeps? Or did you have special sound samples? because if they are only beeps I could add a speaker to an extension port on the board and the table would even have sound than :P Jst let me know, I probably have some speaker lying around.

Re: Table not doing much

Posted: Mon Dec 17, 2012 8:57 pm
by brad
Those blue LED's look really nice :)

I can't notice the flicker in the video - is it worse in real life?

also, make sure your caps are 15pF

Re: Table not doing much

Posted: Mon Dec 17, 2012 9:02 pm
by cnribbens
The flickering is not horrible, but in real life in some parts you really notice it. In the video it looks perfect :lol:

Yeah I´ll take 15pf caps!

Re: Table not doing much

Posted: Mon Dec 17, 2012 9:16 pm
by brad
Just don't let anyone on youtube know that it flickers :)

Re: Table not doing much

Posted: Tue Dec 18, 2012 1:35 am
by cnribbens
The add-on board shouldn´t take long :p I see that Brad mentions 15 pf and bitfogav 22pf. I have both so I can choose :P I ordered the crystal, so it will be here soon. Also ordered some heat shrinking tubing to make it pretty and safe.

Re: Table not doing much

Posted: Tue Dec 18, 2012 9:44 pm
by bitfogav
22pf will be the limit for a 20Mhz crystal, but the recommended cap from the datasheet is a 15pf cap.. :)

Re: Table not doing much

Posted: Wed Dec 19, 2012 4:08 am
by cnribbens
Okay 15pf it is. Tomorrow I'll receive the crystal. The only hard part is solering it on the chip.