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Robots & toys / Supervised experiment

Game Boy gaming on an e-paper handheld

Turn an e-paper touchscreen into a Game Boy handheld, with an experimental Claude-written compiler aimed at faster emulation.

Read the original build See shopping list
Wenting Zhang's M5PaperS3 running a Game Boy game on its e-paper display
Wenting Zhang · original project photo via Hackster

What the hardware does

The ESP32-S3 drives the M5PaperS3's raw e-paper interface at a high refresh rate, provides touch controls and plays buzzer audio. A proof-of-concept compiler translates Game Boy instructions into Xtensa LX7 instructions.

How the agent helped

Wenting Zhang credits his friend Yukidama with building the proof-of-concept Game Boy-to-Xtensa JIT compiler using Claude Code. The article shows the working M5PaperS3 emulator and clearly distinguishes the experimental compiler from the existing CrankBoy core and Zhang's display work.

Before you build

Claude Code's documented contribution is Yukidama's experimental JIT compiler, not the entire emulator or display driver. Compatibility is largely untested and frame rate varies; 60 Hz panel driving does not guarantee every game runs at 60 fps. Bluetooth controller support is experimental. Save explicitly before powering off. The creator reports M5PaperS3 is end-of-life. Use game data you have the right to use.

Follow the build

hackster.io

Original build story

Creator build article

Hardware

All hardware

Shopping list

Save as Markdown

Parts for one build. Reuse equipment you already own. Quantities are planning quantities unless the creator explicitly specifies a count; kit contents are not additional purchases.

Confirm before buying

  • No exact supported Bluetooth controller is established. Check remaining stock and exact PaperS3 revision before buying.

Quantities are for one build. Unless marked source-specified, they are planning quantities; confirm kit contents and the chosen configuration before ordering.

  1. Qty. 1Plan / confirm
    Required

    M5PaperS3

    Original e-paper device.

    Creator and manufacturer mark this device end of life. PaperMono or another successor is not a verified drop-in target.

    Sources & quantity basis

    Creator source. Planning quantity for one build; check the selected configuration.

    View product

    Product page

  2. Qty. 1Plan / confirm
    Required

    microSD card

    Firmware, operating system or project storage.

    Store authorized game data and saves; confirm the emulator’s card-format requirements.

    Sources & quantity basis

    Creator source. Planning quantity for one build; check the selected configuration.

    No exact purchase link verified; confirm the model and requirements above before ordering.

  3. Qty. 1Plan / confirm
    Required

    USB-C data cable

    Connect to the computer for programming or data.

    A charge-only cable cannot flash firmware. Example requires a USB-A host port. If your computer has only USB-C, use an appropriate USB-C data cable instead. Reuse the device’s included cable where possible; this is not a standalone power-supply recommendation.

    Sources & quantity basis

    Setup requirement — check against your configuration. Planning quantity for one build; check the selected configuration.

    Example part

    Accessory example: USB-A to USB-C, 1 m, data capable

  4. Qty. 1Plan / confirm
    Tool

    Computer for setup

    Build, configure or flash the software.

    Sources & quantity basis

    Setup requirement — check against your configuration. Planning quantity for one build; check the selected configuration.

    Use existing equipment or match the specification above. No exact purchase link verified.

  5. Qty. 1Plan / confirm
    Optional

    Bluetooth controller

    External game input.

    Support is experimental; no exact controller model was verified.

    Sources & quantity basis

    Creator source. Planning quantity for one build; check the selected configuration.

    No exact purchase link verified; confirm the model and requirements above before ordering.

Source reviewed, not assembled or hands-on tested. A working product page does not confirm stock, firmware compatibility or a complete build.

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