144 LED Games Console Project

[Art]

The hex file is just renamed from "scroll" which is the project name in MPLAB.
I'll upload a new schematic. The first one has an error where the transistors are.
Unfortunately I can't edit earlier posts, so I deleted the image from the host. The parts list is correct.

I got my protoboard from Dick Smith Electronics which is an Australian electronics store.

[Art]

Oh, Tetris is a little improved from the YouTube video too.
Because you turn the unit vertical to play Tetris,
characters are rotated 90 degrees and scrolled vertically, and other similar touch ups.

I'm glad I was sitting... I know things cost more depending on where you live, etc....

Dick Smith Electronics are getting out of the hobby electronics business.
So an opportunity came up to purchase these:




So I won't be worrying about the price of LEDs for a while

[Byte_Butcher]

Ahhh, Dick Smiths loss is your gain.
Nice storage racks too!



steve

[mtripoli]

Here's the schematic I'm working from:http://www.scarydesign.com/pbp/144LEDGAME.PDF

Art is going to have to make a small change to his code for the input switches; they all switch high.

You have a few choices for what to use for a supply voltage.

Current limit resistors for the led's is calculated (loosely) for a 10% resistor using a red led steady state. If you wanted to dump a bunch of current through the led (light up the room) you could go as low as 10 ohms. You need to adjust this value for the led you use (hint: Rled=Vsupply-(VFled + VFtransistor/I).

I didn't put a part number on the transistor. Almost anything will work.

The leds, resonator and resistor PCB pads will take either through-hole or SMD parts. Everything else is through-hole.

I put a jumper block on the ICSP lines; I've never hung this much stuff off these lines (I usually try and dedicate them on my designs). If it programs with all this stuff jumper the block with wires.

[Art]

Wow, I wish I could draw something like that!

I wouldn't bother with the external EEPROM anymore.
It doesn't really matter if it's left there, and perhaps someone else will make
changes to the program to make some use of it, however, the current program
version will produce sound for both games if a piezo speaker is connected to
RE2, and a new message for the scroller can be sent directly to the device via
serial port to RE1.

I'm sure the piezo speaker could be connected even if the EEPROM is present.
No PicBasic program will be able to produce sound and communicate with an EEPROM simultaneously.
The RE1 serial port isn't essential. The scroll message can be written directly to on-chip EEPROM.

The buttons are no problem, I'm sure anyone here can make changes themselves,
but I will make that change for a "final release version".
Cheers, Art.

[whoop_john]

Thanks for the update and explanation. Art by name, art by nature.

Good luck to mtripoli with the pcb. As is pointed out, a bridge on the power input will allow for AC or DC power of either polarity. Neat.

[Art]

Just looking at the schematic again, mrtripoli has already implemented the changes I was talking about.
I mistook the ICSP connector for an EEPROM!

Looks like I can adopt this schematic for the final package
Many thanks mrtripoli.

[mtripoli]

Following are links for downloading the latest schematic and PCB Gerber files for the PCB.

Schematic: http://www.scarydesign.com/144ledgam...dschematic.pdf
PCB PDF: http://www.scarydesign.com/144ledgame/144ledgame.pdf
Gerber file (in RAR): http://www.scarydesign.com/144ledgame/144ledgerbers.rar

The board is 4.5" x 4.75". There are mounting holes on the four corners for a 6-32 screw.

The Gerber file contains the Gerbers and drill files. You can send this as is to a board house to get boards.

The leds, transistors, small capacitors and resistors can take either through-hole or SMD components. Resistors and caps are 0805.

The pushbutton switches are 6mm x 6mm tactile type.

You can use a three terminal resonator or a crystal and caps; your pick. If you use the HC49U you can lay it down on the board. There is a pad connecting to ground; solder a piece of wire from the metal case to this pad.

Many input voltage capabilities. No matter what you choose, I'd recommend a 7-9VDC supply; nothing more than 12VDC. Keep in mind that if you use the bridge rectifier input there are 2 diode drops. You can bolt the voltage regulator to the board for a little heatsinking though I don't think it's needed.

There's a small "proto" area with +5 and ground available.

Let me know if anything looks squirrely.

Have fun.

EDIT: I used "cutePDF" to generate the PDF of the PCB. I don't know why but the pads look a little "odd". They really aren't like that in the Gerbers...

[Art]

Nice work

I guess I'll go find a PCB house that will do hobbyist quantities.

[cesar35]

hello someone has Shematic project complete
I really enjoyed the project I'm more questions to the input pins of the buttons
can someone help me
thanks

[Art]

Hi,
Have you built the hardware and have it scrolling messages?

There are two buttons that behave differently with the hardware you produce from the PCB.
The pic program assumes two button pins are pulled to gnd, and the other two are
pulled up.
The change made in the hardware PCB requires all input buttons be pulled high
(or low.. don't quite remember).

Did you build from mrtripoli's PCB artwork, or schematic?

[Harrie]

Hi there.
I started a few months with programming pic's
I now made the 144 led display game and message scroller.
But i now wanted to re-program the chip to only a message scroller for christmas.
The picbasic code is to me to long and complex.
How can i put in a different text, for instance "marry christmas"

greatings Harrie

[Dorneliss]

Thanks for your help!

[Dorneliss]

Will I get to use a pic 18f4520 pic instead of 16?

[Art]

Hi Guys,
I finally got hold of a picture of someone else's completed version:



I was seeking this just for verification/confidence that schematics are correct, etc.
If you look carefully you can see "Snake" on the display. This is the intro screen for the snake game.
Cheers, Art.

[Enigma2011]

Hi Guys,
I finally got hold of a picture of someone else's completed version:



I was seeking this just for verification/confidence that schematics are correct, etc.
If you look carefully you can see "Snake" on the display. This is the intro screen for the snake game.
Cheers, Art.

Helllo,
First I would like to say all positive comment about your project, one say congrat!!!!
Please , can you confirm correct polarization of LED diodes because if you look shematics you can cee that collector transistors are on +5V or you change something in hex file???
Please confirm this schematics https://dl.dropbox.com/u/5346257/144LEDGAME.pdf and what hex .file you used, please let me know!

regards,

[funnydrummer]

Hi guys

I'm sorry for grave-digging, but I am trying to make my own version of this project for school. Since all files (the ones from mtripoli and dropbox) have been removed I was wondering if anyone still has them...

Thanks in advance!

EDIT: amazing project btw, thanks a lot Art and all other contrbutors!

[mackrackit]

http://www.picbasic.co.uk/forum/show...4552#post84552

[michelle15]

Hello sir, can i ask, what was the program you used in your tetris project? and also the schematic. Thanks Sir art. God Bless