Yes—a Raspberry Pi Pico can run a ZX Spectrum emulator, and several independent projects demonstrate different ways to do it. They are not one interchangeable product: ZX2040 targets small TFT displays, while PicoZX is a custom handheld, and another repository documents a 320×240 display with a USB-serial keyboard workflow.
What “Pico ZX Spectrum emulator” means
A Raspberry Pi Pico is a microcontroller board built around the RP2040, not a finished handheld. Turning one into a Spectrum system also requires a display, input method, power arrangement, and suitable wiring or custom boards. The projects below make different choices, so their screens, controls, software features, and build instructions should not be assumed to work together.
Raspberry Pi lists the Pico 1 with a dual-core Arm Cortex-M0+ processor running at up to 133 MHz, 264 kB of on-chip SRAM, and 2 MB of onboard QSPI flash. Its product page describes Pico-series starting prices at $4; that is a manufacturer-stated starting price, not a guaranteed current local retail price. The same page says Pico 1 remains in production until at least January 2036. Raspberry Pi Pico product specifications
Three distinct ways to run Spectrum software
| Project | Display and controls | Software and documented features | Build character |
|---|---|---|---|
| ZX2040 | Targets ST77xx TFT displays; interface designed for small screens and few buttons. | Port of Andre Weissflog’s ZX Spectrum emulator by antirez. Hackaday reports real-time image scaling for displays that differ from the Spectrum’s 256×192 resolution and an overclocked Pico. | Small-display-focused emulator port; the report does not provide comparable benchmark results. |
| PicoZX handheld | 2.8-inch IPS display, 50 tactile switches forming a miniature QWERTY keyboard, and joystick use. | The handheld article says it runs Fruit-Bat’s ZX Spectrum emulator and M.CU.M.E.; the latter supports systems including Commodore 64, Atari 2600, and ColecoVision. | Purpose-built handheld using several custom PCBs, with the Pico and most components soldered to a main board. |
| virgesmith/pico-zxspectrum | README describes a 5 cm, 320×240 TFT and a keyboard connected through a USB-serial Python client. | README lists Z80 and SNA image loading, Z80 image saving, and PNG screenshots over USB serial. | Software-and-wiring-oriented build with Pico SDK, TinyUSB, and Pimoroni Pico libraries. |
ZX2040: an emulator port for small TFTs
Hackaday’s April 27, 2024 report describes antirez’s ZX2040 as a Raspberry Pi Pico port of an existing ZX Spectrum emulator by Andre Weissflog. It targets ST77xx TFT displays and uses an interface intended for small screens and a limited number of buttons. The report says the Pico is overclocked and the software scales the image in real time to accommodate displays that do not match the Spectrum’s 256×192 resolution. Those are descriptions in the report, not independently measured speed or timing results. Hackaday’s ZX2040 report
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- The Raspberry Pi Pico is a beginner-friendly microcontroller board that uses MicroPython to give you a taste of the Internet of Things and microcontrollers. The RP2040 is a well-designed microprocessor that can be utilized in almost any Internet of Things project. It has enough power to complete the task quickly.
- 【Raspberry Pi RP2040 Microcontroller】Raspberry Pi Pico features Dual-core ARM Cortex M0+ processor, flexible clock running up to 133 MHz. With 264KB of SRAM, and 2MB of on-board Flash memory.Supports up to 16 MB of off chip flash memory via a dedicated QSPI bus
- 【Multiple Software Support】Pico has rich and complete software support, it comes with a complete Rasberry Pi official C/C++ SDK, Micropython SDK.The programming and burning of Pico need to be carried out on the computer. Supported operating systems and computers include:Raspberry Pie with Raspberry Pi OS,Other platforms equipped with Debian based Linux system Computer with MacOS, Computers with Windows, etc.
- 【Rich Hardware Interface】Raspberry Pi Pico has 30 GPIO pins, 4 pins for analog signal input and 26 × multi-function GPIO pins, 2 × SPI, 2 × I2C, 2 × UART, 3 × 12-bit ADC, 16 × controllable PWM channels.USB 1.1 supported by host and device, The installation mode can be flexibly selected by users to facilitate welding with other development boards.
- 【Build Project in Tiny Size】Only 2.1cm*5.1cm ( as small as your thumb). Pico has been designed to use either soldered 0.1" pin-headers or can be used as a surface-mountable 'module'.
PicoZX: a custom handheld with keyboard and joystick
Raspberry Pi’s January 23, 2024 article describes Ken St. Cyr’s handheld build, inspired by Peter Misenko (Bobricius)’s PicoZX design. The assembly uses several custom PCBs; the Pico and most other components are soldered to a main board. A 2.8-inch IPS display sits alongside 50 tactile switches arranged as a miniature QWERTY keyboard, and the article also describes joystick use. Its software is Fruit-Bat’s Spectrum emulator plus M.CU.M.E., which the article says can emulate additional systems such as Commodore 64, Atari 2600, and ColecoVision. Raspberry Pi’s PicoZX handheld build
The article links to a maker listing, but its current availability, contents, price, and seller terms are not established here. Treat PicoZX as a documented design/build rather than a guaranteed purchasable kit.
Rank #2
- with pre-soldered header Raspberry Pi Pico. RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
- Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz. 264KB of SRAM, and 2MB of on-board Flash memory.
- Castellated module allows soldering direct to carrier boards. USB 1.1 with device and host support. Low-power sleep and dormant modes. Drag-and-drop programming using mass storage over USB. 26 × multi-function GPIO pins.
- 2 × SPI, 2 × I2C, 2 × UART, 3 × 12-bit ADC, 16 × controllable PWM channels.Accurate clock and timer on-chip.Temperature sensor.
- Accelerated floating-point libraries on-chip.8 × Programmable I/O (PIO) state machines for custom peripheral support
virgesmith’s build: files, screenshots, and a USB-serial keyboard
The virgesmith/pico-zxspectrum repository README describes a 5 cm 320×240 TFT, USB serial keyboard connection, and display, image-transfer, and screenshot functions. It lists loading Z80 and SNA images, saving Z80 images, and saving PNG screenshots over USB serial. Its documented keyboard workflow uses a rudimentary Python client with pyserial and pynput, so this is not simply a matter of plugging in any keyboard and expecting every emulator build to recognize it.
The README names the Pico SDK, TinyUSB, and Pimoroni Pico libraries for building. Its instructions demonstrate a TinyUSB 0.14.0 symlink and report a 96-byte RAM linker overflow with TinyUSB 0.15 or above in that particular setup. This is a repository-specific build note, not evidence that newer TinyUSB versions are universally incompatible; dependencies and instructions may have changed since the README was written.
Rank #3
- RPi Pico 2 W Microcontroller Board (pre-soldered header (color-coded)), Based on Official RP2350 Chip, Dual-core & Dual-architecture Design. Upgraded hardware from Pico 2 with wireless communication, onboard antenna, features 2.4GHz 802.11n WIFI and Bluetooth 5.2.
- Adopts unique dual-core and dual-architecture design: dual-core Arm Cortex-M33 processor and dual-core Hazard3 RISC-V processor, flexible clock running up to 150 MHz.
- Onboard Infineon CYW43439 wireless chip, supports WIFI 4 wireless and Bluetooth 5.2.
- 520KB of SRAM, and 4MB of on-board Flash memory.
- Castellated module allows soldering direct to carrier boards. USB 1.1 with device and host support. Low-power sleep and dormant modes. Drag-and-drop programming using mass storage over USB.
Choosing a project and planning the hardware
- For a small TFT and a compact interface: ZX2040 is the project explicitly described as targeting ST77xx displays and few buttons. Confirm the chosen display controller and wiring against the project’s current instructions.
- For a self-contained handheld: PicoZX demonstrates an IPS screen, integrated miniature keyboard, joystick, and custom PCBs. Expect more fabrication and assembly than a basic board-and-screen setup.
- For image transfer and screenshots: the virgesmith README documents Z80/SNA loading, Z80 saving, and PNG screenshot saving through its USB-serial workflow.
- For keyboard connectivity: the Raspberry Pi forum discussion includes community guidance from 2022 recommending an OTG adapter that also permits power delivery, and notes that some cables carry power only. Confirm compatibility with the selected board, wiring, and firmware rather than treating that advice as universal. Raspberry Pi forum discussion on Pico Spectrum emulation
Before buying a screen or assembling a handheld, check the selected project’s display controller/interface, resolution, power requirements, and input support. Similar-looking TFT or IPS modules are not automatically compatible, and the hardware and features documented for one project do not establish compatibility with another.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the available reports do—and do not—compare
The cited project descriptions establish that Spectrum emulation is possible on Pico hardware and show distinct approaches to controls, displays, and software. They do not provide a comparable test of emulation speed, Spectrum compatibility, timing accuracy, power use, or total build cost. Choose based on the documented hardware and workflow that fit your build, not an unsupported claim that one implementation is the fastest or most accurate.
Quick Recap
Best Value
- RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
- Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz
- 264KB of SRAM, and 2MB of on-board Flash memory
- Castellated module allows soldering direct to carrier boards
- 26 × multi-function GPIO pins
Rank #4
- 【RP2040 Development Platform】It uses the Raspberry Pi Pico development board and is equipped with the RP2040 microcontroller, making it suitable for e-learning, programming instruction, and embedded project development.
- 【Multiple programming methods】Supports MicroPython, C/C++, and Piper Make graphical programming to meet the needs of users at different learning stages.
- 【Rich experimental modules】Includes common electronic components such as LCD1602 display module, SG90 servo motor, human body sensing module, WS2812 RGB LED strip, buzzer, and buttons, covering basic applications such as display, input, sensing, and execution control.
- 【Comprehensive learning tutorial】The kit provides detailed project tutorials and sample code to help users quickly complete circuit connections, program downloads, and experimental verification.
- 【Suitable for STEM education】Ideal for electronics beginners and school lab teaching. Through hands-on project practice, it effectively improves practical skills, logical thinking and innovation ability, making it a great choice for programming enlightenment and hobby cultivation.
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