Hello World!

In this Tutorial I want to show you, how to build a VGA kompatible Game Boy.
In this case I use a board made by Benn Venn named „Porchie“ VGA Out.
[Shop -> http://bennvenn.myshopify.com/]
For me there was one last question, VGA external (in a box) or internal?
I decided to build internal VGA first, with a real VGA Plug at the top of the Game Boy.

*This is just a „preview“ tutorial, it would be changed a bit in the near future!
**This tutorial is also available in german -> https://tronimal.de/game-boy-vga-mod/

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First, you shoud prepare the shell. So cut and grind a few things etc.

Here is some room for the VGA plug, for example.
[I cutted away some part of the Game Boy pcb to get some more room,
but this is not absolutely necessary!]

VGA BOY 9
VGA BOY 10
VGA BOY 11
VGA BOY 5
VGA BOY 6

At the place where usually the internal speaker is mounted
is enough space to fit in the VGA pcb easily.
For sure you could put it somewhere else, but it would be a bit more tricky!

VGA BOY 16
VGA BOY 18
VGA BOY 7
VGA BOY 8

Go on to the real build!
First you got to connect this 6 points with the VGA pcb.

VGA BOY 3
GameBoy Pin Connector Pin Out

Next you got to connect 5V to te VGA board.
That could be done directly from the Game Boy, but it could cause some heating.
[You can prevend that with a buck converter / step down converter! [ ~6V In / 3,3V Out]
You coulkd also use an external power adapter, batteries or something else like this.

I grab the 5V directly from the Game Boy.

VGA BOY 4

There are enough other points to grab 5V from the Game Boy!
[Yellow 5V / Black Ground]

5V / Ground

The „Porchie“ Pins are used as following [from left to right] ->
At the picture, the first 4 points go to the VGA plug / cable.
The next 6 points to the Game Boy.
THe last point to 5V!

Porchie

Here again in a better form!
[Attention! The „Porchie“ VGA pcb is shown the other way around as on the picture above.]
1 -> 5V [3,3V]
2-7 -> Game Boy
8-11 -> VGA

Porchie Pin Out

There will be many points connected to the 4 pins on the „Porchie“ VGA.
First I built an extra pcb for that, but at the end I decided against that,
because it would take much more room then.
So I soldered everything directly to the VGA plug at the end.
Therefor you got to solder some bridges to the plug!

VGA BOY 12
VGA BOY 13

Here you can see in detail which pins of the VGA plug have to be used!
red (1), green (2) & blue (3) -> Video
Ground (5,6,7,8,10) -> GND
H-Sync (13) -> H-Sync
V-Sync (14) -> V-Sync

VGA Pin Out

Here are the cables from the porchie to the VGA plug!

VGA BOY 19

Open Game Boy.

VGA BOY 1
VGA BOY 2

The finished VGA Out Game Boy!

VGA BOY 22

And the Game Boy plugged into a screen via VGA!
You can see really well here, that the timeing is fine!

VGA BOY 36
VGA BOY 31
VGA BOY 34
VGA BOY 35

Optional, you could cut two little holes to have access to the potentiometers all the time.
Ussully you will only set these once.
Except yo want to change to an inverted picture from time to time.
That would be easily possible then!

VGA BOY 21

That’s all!
Good Luck!

PS: Here is a little timelapse video from the build [16x]!
-> https://youtu.be/sFV_vewWi5k