Buzz Computer

ColecoVision 31-in-1 Flash Cartridge
Version : 24/03/2013 - FIX 3

This board is made to store 31 rom files into a single Flash or UVPROM (1M x 8 bits).
To use it, you need a specific 'bootloader' stored at the bank 0 location (first 32k bytes).
All other rom images must be stored into the other 32K bytes banks.

Running the bootloader lets you choose a rom image (between 31 images), switches to the corresponding memory bank and launches the image.

Files
Colecovision-Flash.sch : Schematics (Eagle 5.0.0)
Colecovision-Flash.brd : PCB (Eagle 5.0.0)

ColecoVision-Flash-Pcb-lower.png : 600dpi 'Solder layer' (lower side)
ColecoVision-Flash-Pcb-upper.png : 600dpi 'Component layer' (upper side)
ColecoVision-Flash-Pcb-toner.png : 600dpi Printable sides

ColecoVision-Flash-Pcb.png : 600dpi full board
ColecoVision-Flash-Sch.png : 600dpi schematics

Usage
Concatenate the bootloader with 31 image files (32Ko max) to get a 1M byte file then burn it.

For the bootloader, follow the link : http://zx81.zx81.free.fr.
Many thanks to my friend ZX for his help and his very great bootloader !

Any suggestions or comments are welcomed (contact buzz.computer (at) free.fr)

Enjoy !

Buzz

ColecoVision 31-in-1 SMD Mini

Version : 28-02-2013 - Not tested yet

This board is made to store 31 rom files into a single UVPROM (1M x 8 bits).
This one is the same as the previous ColecoVision 31-in-1 SMD but smaller. The goal was to make a specific version to be made by a sub-contractor.

Any suggestions or comments are welcomed (contact buzz.computer (at) free.fr)

Enjoy !

Buzz

ColecoVision 31-in-1 SMD
Version : 19/01/2013
This version corresponds to the ColecoVision 31-in-1 Flash Cartridge - 14/01/2013 - FIX 2 with SMD components.

This board is made to store 31 rom files into a single Flash or UVPROM (1M x 8 bits).
To use it, you need a specific 'bootloader' stored at the bank 0 location (first 32k bytes).
All other rom images must be stored into the other 32K bytes banks.

Running the bootloader lets you choose a rom image (between 31 images), switches to the corresponding memory bank and launches the image.

Files
Colecovision-Cms.sch : Schematics (Eagle 5.0.0)
Colecovision-Cms.brd : PCB (Eagle 5.0.0)

ColecoVision-Cms-Pcb-Lower.png : 600dpi 'Solder layer' (lower side)
ColecoVision-Cms-Pcb-Upper.png : 600dpi 'Component layer' (upper side)
ColecoVision-Cms-Pcb-toner.png : 600dpi Printable sides

ColecoVision-Cms-Pcb.png : 600dpi full board
ColecoVision-Cms-Sch.png : 600dpi schematics

Usage
Concatenate the bootloader with 31 32K bytes image files to get a 1M byte file then burn it.

For the bootloader, follow the link : http://zx81.zx81.free.fr.
Many thanks to my friend ZX for his help and his very great bootloader !

Any suggestions or comments are welcomed (contact buzz.computer (at) free.fr)

Enjoy !

Buzz

ColecoVision single ROM Cartridge
This board is made to be used with one ColecoVision ROM file (up to 16Ko).
For the moment, only one file can be stored to the EProm (no bank switching or bank selection).

This PCB corresponds to the remake of my previous version (24/10/2008).

Files
Coleco-Rom-Cart.sch : Schematics (Eagle 5.0.0)
Coleco-Rom-Cart.brd : PCB (Eagle 5.0.0)

Usage
Just 'flash' one 2Ko, 4Ko, 8K or 16Ko files to the UVProm and plug-in the cartridge into the console.

Any suggestions or comments are welcomed (contact buzz.computer (at) free.fr)

Enjoy !

Buzz

What's that
For those who have a Colecovision console, this simple PCB is a kind of universal cartridge.
So, this is a way to play games even if you do not have original cartridges anymore.

What is needed
This adaptor needs 2 chips : 4-input AND gate (74LS21) and a 32Kb UVPROM (27C256).

After making the board (double sided), you just have to "burn" a rom file into the UVPROM with your favorite programmer, plug-in the adaptor into the console and play.

I do not deliver any rom file. It is up to you to get them.

Files
The package Coleco-Rom-Board.tgz (in attachment) contains files to make your own adaptor.

• Coleco_compo.png : Component side
• Coleco_copper.png : Copper side
• Coleco_impl.png  : Full view
• Coleco.pcb : PCB file (Linux PCB version 20070912)

Do not forget to solder the green wire (bottom-right of the board).

Enjoy !
Buzz

IrdayJoy Arduino based

The IRDAJoy is the ultimate interface used to connect your old-school atari joystick and/or paddles to your PSP handheld console.
The communication between the console and the box is made through an IR link.

Originaly, this interface has been made with a PIC18 microcontroller. Because it is too much complicated to build, my good friend ZX asked me to build a new version with something easier to do.
So, here is the same interface, based on an arduino board.

What you need

• arduino board http://www.ladyada.net/make/boardui...,
• Arduino 0017 toolkit http://www.arduino.cc,
• a prototyping board,
• an IR led (CQY89 or any compatible IR led),
• 220 resistor
• SUB-D 9 pins M
• 2 paddles and / or one atari joystick
• few wires
• a little box,
• 4xAA 1.2V battery cells + adaptor or 3xAA 1.5V battery cells.

How to build
I did select the boarduino board because it is not expensive, small and fully compatible with other arduino boards.
To get complete infos, follow the link : http://www.ladyada.net/make/boardui...

Because there is a USB and a serial version, you will probably need a USB-TTL adaptor to program the arduino.

The schematics is very simple. No need to make a real PCB. A prototyping board is nice to use.
You just have to plug wires in the corresponding holes like in the picture.

When wiring is done, open the IrdaJoyArduino.pde file with Arduino 0017 IDE, connect the board to the PC (through a USB-TTL converter if you purchased the boarduino serial version or directly if you get the USB version) then click on the upload button.
The code is compiled and then automaticaly uploaded to the boarduino target. If everything is OK, just put everything into a small box and use it !

Infos
I purchased the board and all other parts at http://www.watterott.com

This adaptor is compatible with ZX PSP homebrews. Have a look at : http://zx81.zx81.free.fr/serendipit...

Enjoy !

Buzz

This new version integrates now music & sounds !

If you need more info on the original game, have a look at http://www.videogamehouse.net/tombstone.html or http://en.wikipedia.org/wiki/Tombstone_City:_21st_Century).

Keys are :

• Arrows : Move
• L-Ctrl : Shoot
• Tab : Panic button. The player is placed on a safety place but score is cleared !
• Backspace : Restart the game
• Enter : Pause / Continue
• Esc : Quit
• F1 : Help

The TombstoneSDL-20101216.tgz package (attached) contains source code.
Enjoy !
Buzz

Here is an "easy to make" Thermostat.
The goal was to replace an existing non working thermostat on a heat accumulation panel. Instead of buying a new one I decided to make my own.

The goal was to use basic electronic parts, to be cheap, fun to make and of course secure.
It is mainly based on a "boarduino" board for the controler, TIL311 led digits for temperature visualisation (very expensive if you do not have some),
a 5V stabilized power supply (NDS lite power bloc) and 1-wire temperature sensor. Power switching is made with a simple BT12-600 triac (with a 2000W load).

There is no PCB. It is up to you to make your own or use a prototype board like me.

The package contains the schematic and the source code (pde).

Have fun ! Buzz

This application is a graphical frontend to the Connect 4 game, made by a very good friend (L. BUCHARD) in 1998.
The goal is to be the one who creates a line of 4 tokens.
That looks pretty simple but winning against the computer is a real challenge.

All the information and source code (Gtk/Linux based) are in the Puissance4-20022002.tgz file (attached).

Enjoy !
Buzz

Here is an easy to build IR remote control.
It could be used at home to control lights, radio or more powerfull things.

This remote control is build arround an IR coded transmiter and an IR receiver powered by its own power supply.

This architecture is based on a PIC16F84 (ou 16F628). I also build another one based on a PIC12C508 (ou 12F509). These two versions are compatibles.
All the informations (PCB, schematics, source code ...) are in the file RemoteCtrlIR-V1.0.tgz (attached).

Enjoy !
Buzz