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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11You can build a Game Boy-inspired handheld, but the right parts depend on what you want it to play. A programmable Pico console is suited to making simple original games; a Pico-GB build runs Game Boy software through an experimental emulator; and a Raspberry Pi computer in a handheld case is a separate, more computer-like route. None is an authentic Nintendo product, and a retro appearance does not mean a device accepts commercial cartridges.
Choose what you want the handheld to play
Decide the software target before buying parts. The three routes below differ in hardware, firmware, setup, and the work required to finish the device.
| Route | What it runs | Typical work and trade-offs |
|---|---|---|
| Programmable Pico handheld | Original small games, including projects made with MakeCode Arcade | Uses a microcontroller, display, buttons and usually a buzzer. A documented design uses a custom PCB and 3D-printed case; its board and pin configuration are specific to that project. |
| Pico-GB emulator | Game Boy software through an emulator | Requires display-specific firmware configuration and a PlatformIO build. Depending on the chosen display, it may also require microSD storage, audio hardware and careful attention to screen throughput. |
| Raspberry Pi computer in a handheld case | A Raspberry Pi operating system and an emulator front end such as RetroPie | Involves imaging a microSD card and fitting the computer, display, battery and cooling into a case system. Assembly instructions and parts are case-specific. |
If you want to learn programming and make your own games, start with a Pico console project. If playing Game Boy titles is the goal, choose an emulator project and check its compatibility limits before assembling it. Choose the Raspberry Pi route when you want a small computer running an emulator front end and are prepared to follow a case-specific installation.
Pick a documented project before selecting components
Do not assume that parts advertised for “Pico” handhelds are interchangeable. Board generation, pinout, display bus and firmware configuration all matter. Follow one project’s schematic and parts list rather than combining components from several builds without checking compatibility.
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For a programmable game-making console
The Raspberry Pi Pico GameBoy project specifies a Raspberry Pi Pico with the RP2040, an ST7789V3 1.69-inch display, seven tactile switches, a buzzer, a custom PCB and a 3D-printed PLA case. Its maintainer says other Pico versions are incompatible with this design because of pin and firmware differences. The project provides case models, a PCB archive, a schematic and firmware; its instructions use UF2 flashing and a game-engine setup.
For Game Boy emulation on a Pico
The Pico-GB project recommends a Pico 2, while noting that a Pico 1 may work for limited targets. Its example hardware list includes an LCD, a microSD reader if the display does not include one, a FAT32 microSD card, a MAX98357A amplifier, a 2W 8-ohm speaker, eight tactile buttons, and a PCB or breadboard with jumper wires. One example display is a 2.8-inch, 320×240 ILI9341 LCD; it is an example, not a universal requirement.
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Pico-GB requires firmware configuration for the selected display and a PlatformIO build; its README does not provide a precompiled binary. The maintainer describes the emulator as experimental: some games or features may fail or behave unexpectedly. The documentation also discusses screen tearing in a particular wiring configuration and warns about overclocking and hardware stress. Treat these as project limitations, not performance results independently verified across builds.
For a Raspberry Pi computer in a handheld case
Raspberry Pi Official Magazine’s handheld guide describes two case-based builds, including microSD image setup, case assembly, display and battery installation, and wireless configuration. Those steps apply to the named case systems; they are not a parts list or assembly guide for a custom Pico layout.
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For a kit or supported PicoBoy build
The PicoBoy project links software resources and printable case files and identifies the V1 and V2 products as its officially supported hardware. Its repository also states limits on commercial and competitive use of the code. Read the current repository license and support terms before adapting or distributing the project; kit availability can change.
Plan the complete build, not just the screen and board
Make a bill of materials from the exact project you intend to follow. Account for the controls, audio, display interface, wiring or PCB, firmware, storage, power circuit and enclosure. A display module may include an SD reader, for example, while another setup may need a separate reader. Check the schematic and pin assignments before ordering parts.
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- Controls: Confirm the number and type of buttons and how they connect to the board.
- Audio: A buzzer in one design is not equivalent to the amplifier and speaker specified by another.
- Wiring and fabrication: Check whether the project supplies a PCB design, expects a breadboard, or requires soldering. Case files may require a 3D printer, makerspace or print service.
- Power: Identify the battery, charging and regulation requirements for the chosen circuit rather than improvising a supply.
- Enclosure: Verify that the case is designed for your board, screen and battery arrangement.
A separate Raspberry Pi article about Arnov’s Pico 2 Snake console illustrates why power planning matters: that design uses a 64×32 LED matrix and an 18650 lithium-ion cell, with the nominal 3.7V supply boosted to a stable 5V for the Pico and matrix. Arnov says, “Raspberry Pi Pico 2 was ideal for this project.” This is a distinct design, not a drop-in power or case solution for the other projects. See Raspberry Pi’s Pico 2 Snake console article.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Understand the display trade-offs
Screen choice affects wiring, GPIO availability and responsiveness; it is not merely a cosmetic decision. Pico-GB’s documentation warns that SPI displays can be slow at larger sizes. A parallel display can improve throughput but uses more GPIO pins, leaving fewer for controls and other connections. Follow the maintainer’s guidance for the selected display and wiring rather than treating a size or interface as universally best.
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Build and set up in a controlled sequence
- Choose the software target. Decide between making original games, emulating Game Boy software, or installing a Raspberry Pi operating system and emulator front end.
- Select one documented project. Confirm its exact board, display interface, pinout and firmware requirements. In particular, do not substitute a different Pico version in the RP2040-only ST7789 design.
- Complete the project-specific parts list. Check for an included SD reader, custom PCB requirements, specified controls and audio parts, and a documented power circuit.
- Assemble and check electronics before closing the case. Use the project’s schematic and pin assignments. The available project documentation does not establish one validated assembly or test sequence for every build.
- Install the software using that project’s method. The ST7789 Pico project describes UF2-based flashing; Pico-GB requires a display-specific PlatformIO build; the Raspberry Pi case guide uses microSD imaging and RetroPie setup.
- For emulation, use game files you are legally entitled to use. Pico-GB says it includes no copyrighted games and asks users to use ROMs they legally own. It does not provide ROM downloads.
Match the project to your skills and expectations
These builds range from a kit intended to help people learn soldering to custom PCB, firmware and enclosure work. Before committing, consider which tasks you are comfortable troubleshooting:
- Programming: A MakeCode-oriented console focuses on creating games; Pico-GB adds display-specific firmware configuration and compilation.
- Electronics: Custom boards, soldering, pin mapping and power management vary by design.
- Fabrication: A printed case is useful only if you can print it or arrange printing; a computer-in-case build depends on its particular enclosure system.
- Debugging: An experimental emulator may not run every game or feature as expected, even when built according to its documentation.
Choose a complete documented configuration that fits your target and skills. Mixing a screen from one project, firmware from another and a case from a third can create avoidable compatibility problems.
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