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Game Boy - DMG Released in 1989, the 'old grey brick' changed the world of handheld video gaming forever. Since then, the retro modding community have developed amazing ways to customise and improve this legendary series. Nov 24, 2013 This is proof of a cheap DIY fix for a non working Gameboy. There was a catch though I did notice that once the Gameboy turned on that some of the lines on the lcd were not being displayed. Luckily there’s a DIY fix for this too. How to fix the lcd screen when lines are missing Gameboy DMG LCD Missing Lines Pixels.
Need help with my tft screen replacement. Well the screen is working perfectly fine. But the problem now is that the buttons aren't working. Restore and Modify an Original DMG Gameboy: Released in 1989, the DMG (Dot Matrix Gameboy) was the first Gameboy Nintendo ever released. It’s a lot of fun to mess with, so here’s a quick guide of my experiences taking apart, restoring, and modifying the DMG with an awesome new backlight.
AliExpress sell a 6 button board PCB for the Raspberry Pi that fits the classic DMG-01 Nintendo Gameboy case. It can form the basis of a DIY Gameboy project using a Raspberry Pi Zero. It’s cheap but is sold with no technical support, information or assembly instructions. Here is some information which you might find useful before deciding to buy one or if you have purchased one already.
6 Button Board Kit Contents
The kit is usually sold with the following components :
- 6 button PCB
- Raspberry Pi header PCB
- 2 x 40-way headers
- 18-way ribbon cable
- 2 x ribbon cable connectors
- Joystick
- 3.5mm audio jack
- Hotkey switch + cap
- 2-pin audio connector and cable with plug
These kits are available for $7-$10. https://craftrenew484.weebly.com/non-lethal-dmg-dnd-5e.html.
The hotkey switch, joystick and headphone jack are all optional. They don’t need to be fitted to use the D-pad and 2-6 buttons.
Main Board
The main board provides the pads for a D-pad and up to six other buttons. The D-pad and two of the buttons are in the standard Gameboy layout. To make use of the other four buttons you need to drill suitable holes in the Gameboy shell.
There are also PCB holes to attach two other switches in the left and right corners. These would normally be used to replicate the L1 and R1 shoulder buttons on SNES controllers. Many people position these buttons on the rear of the Gameboy case.
Button Board Pin-out
After soldering on the ribbon cable connectors and joining the two PCBs I was able to determine the GPIO mapping. The smaller board has labels on the 40 pins so working out the mapping was fairly straightforward.
FunctionPhysical Pi PinPi FunctionHotkey3GPIO2Ground6GroundL115GPIO22L210GPIO15R113GPIO27R25GPIO3X29GPIO5Y16GPIO23A32GPIO12B31GPIO6Select33GPIO13Start36GPIO16Left38GPIO20Right35GPIO19Up40GPIO21Down37GPIO26The ribbon cable carries these 18 signals in the following order :
As with all GPIO related projects take care to avoid confusing physical pin numbers (1-40) and GPIO references. Please refer to my Raspberry Pi GPIO Header Diagram to cross reference physical pin numbers and their functional labels.
Daughter Board
The smaller board is designed to route the connections from the ribbon cable to the Pi’s GPIO header. You don’t need to use this board if you want to wire the main board directly to the GPIO header. However the convenience of the ribbon cable is the main reason to buy this particular kit.
Headphone Socket and Audio
The Left and Right audio pads appear in the slot where you would solder the headphone socket and in the top left corner of the smaller PCB where you can solder the small white 2-pin connector. What is decryptedfile dmg flash player download.
![Gameboy Dmg Buttons Not Working Gameboy Dmg Buttons Not Working](/uploads/1/3/3/9/133947062/175445246.jpg)
Assembly
Daughter Board
The kit comes with a 40-way header to solder to the smaller daughter board. This allows the board to be plugged onto the Pi’s 40-way GPIO header.
The holes in the PCB line up with the mounting holes of the Pi Zero so can be used for mounting if required.
However, to reduce the overall size I did not solder the 40-way header to my board and instead soldered it directly to the Pi Zero. This reduced the overall height of the combined boards. The USB and power pads on the underside of the Pi Zero were still available so soldering wires onto those wasn’t an issue.
Ribbon Cable Connectors
A ribbon cable connector must be soldered to each of the two PCBs. The connections are tiny and I would recommend watching some videos on YouTube to see how people solder SMD connectors to PCBs. For example this video.
The key is to use flux and have a solder sucker or some solder wick available. These are the only SMD connectors I have ever soldered and it turned out better than I expected.
Hotkey Button (optional)
The hotkey switch gives you a bit more flexibility within RetroPie if you want a dedicated button as an alternative to using Select. It is easy to insert into the PCB and solder the four connections. You will need to drill a hole in your case in the correct place.
The reason I didn’t add this button to my project was that the hole would be too close to the “GameBoy” lettering on the front cover. However you could mount the switch wherever you like and wire it back to the points on the PCB.
Joystick (optional)
The joystick duplicates the functionality of the D-pad. It requires 6 connections to be soldered to pads on the main board. Simply hold it in place with tape or hot glue and solder the 6 legs to the PCB. You will need to drill a hole in your case in the correct place.
The supplied joystick needs some sort of thumb-stick or rubber cap to be a practical option but this is not supplied. For my own project I decided not to use the joystick.
Headphone Socket (optional)
The socket requires three tabs to be soldered. This is a fairly easy arrangement but the lack of speaker switching means you may be better using an alternative. The PCB may need some grinding in order fit a different socket.
Mounting Button Board in Case
The board fits into the standard DMG-001 case and you can use 2mm screws to secure it in place. Avoid using screws that are too long otherwise you will damage the plastic on the front face.
The Pi Zero and the daughter board can be mounted wherever you like. The ribbon cable gives you lots of flexibility.
Replacement Gameboy cases are available in loads of different colours. Take a look here : http://s.click.aliexpress.com/e/VL4GhkM
I2C Pins
The standard I2C pins (Pins 3 & 5, GPIO2 & GPIO3) are assigned to the Hotkey and R2 connections. If you want to make use of I2C you should avoid connecting the R2 or Hotkey switches.
Software Setup
There are a number of ways to get these GPIO based controllers working on the Pi. I planned on using RetroPie so needed something compatible with that. I found an excellent software project called GPIOnext created by Mark Holgate. It creates a map of your buttons/GPIO pins and allows Emulation Station to detect it as a “virtual controller”. You can download this software to your Pi using :
then install it using :
At the end of the installation process it asks if you want to run the configuration utility. If your board is connected to your Pi and you are ready then press Y. Don’t worry you can choose not to run the config now and run it some time later using :
The config utility takes you through the process of setting up the D-pad, ABXY buttons and shoulder buttons (if you are using them).
Once setup you can reboot the Pi and when Emulation Station loads it will find your new controller. You then complete that step as you would do with a plug-in USB controller. Easy.
Conclusion
Overall I think this set is worth the money even though it took me some time to work out how to make full use of it.
- Advantages
- Cheap
- Quick way to add D-pad and 6-buttons
- Simplifies wiring for “shoulder” buttons
- Ribbon cable eliminates need to individually wire to GPIO header
- Disadvantages
- Headphone socket has no switching
- Joystick has no rubber cap and only replicates the D-pad
There are other Gameboy button PCBs available with additional features that may suit your project better. In this case the board was perfect for my needs as I really just wanted it to provide an easy way to wire up the buttons and D-pad without excessive wiring.
The board is available from various sellers but here is a link to the item I ordered : DIY 6 Buttons PCB Board Kit For Game Boy Zero DMG-001 How do you check dmg done during game lague.
The Game Boy is an 8-bit hand held video game device developed and manufactured by Nintendo. It is the original Game Boy, characterized by its large gray casing and reflective black and white LCD screen.
Note: This troubleshooting page covers only the original Game Boy. Every other Game Boy after it is covered in another troubleshooting page.
The System Does Not Turn On
Always make sure you have batteries that have a charge installed in the back of the Game Boy in the battery compartment.
No Batteries
You may need to check if batteries exist in the battery compartment. Also make sure that they are correctly inserted and that they are not 'dead' batteries.
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Faulty LED
The power LED on the left side of the screen does not turn on when the system does. This could be the cause of a broken LED and can be replaced.
The Game Does Not Start Playing
Cartridge is not fully inserted
Make sure that when you insert your cartridge it is not blocked by dirt or other debris. Also check that the cartridge is going into the dock completely, allowing for a connection to occur. Also check for damage done to the cartridge itself, water damage and or shock problems can cause a technical failure with the cartridge.
Technical Problems With The Cartridge Reader Have Arisen
If your cartridge is fully functional and the system turns on but still the game does not load a technical problem may have arisen. The connections that run the game to the main CPU may have been broken or faulted.
There Are Bars Across The Screen
The Connections To The Screen Are Faulty
The connections to the screen are the most fragile connections inside the Game Boy, if these connections are crossed or manipulated in any way the screen will exhibit bars. These run length and width wise on the screen usually on the edges. Replacing the screen or Game Boy may be imminent if unable to repair connections.
Technical Reset Required To Clear Screen
Sometimes all the screen needs to do is have a technical reset to clear the connections and allow the screen to go back to working order. This can be done by accessing the screen via guide.
Buttons Do Not Work
Buttons Have Moved From Their Touch Sensitive Placement On The Main Board
If this is the case, you need to follow the repair guide and place the buttons back in their respective places, making sure that they line up with the repair guide instructions.
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The Control Board Is Having Technical Problems
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This would require an entire board replacement, which costs more than the actual Game Boy, buying a replacement is the only option.
There Is No Sound
Out Of The Main Speaker
There may be a connection problem, or the speaker needs to be replaced. Make sure that the speaker has had no water damage in the past.If the speaker is indeed broken, you can do a replacement, or you may need to do a complete replacement of the system.
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Out Of The Headphone Jack
If the headphone jack is not functioning, there is most likely an issue with the connection and the entire piece needs to be replaced. This is an easy fix and follow the repair guide.
There Is Water Damage
If there was ever any water damage to your Game Boy system, there is a major issue. DO NOT TURN ON YOUR GAME BOY you need to let your system dry for a few days to ensure that the circuits will not short and cause the boards inside to fry to a crisp. Also after a few days make sure to go inside and clean the copper plating on the back of the CPU board, this copper plating can 'Rust' and will cause shorts over connections. If a turning on of the Game Boy did occur the Game Boy need most likely to be replaced. Follow repair guide.