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Oneira guides/GPIO + maker buses

Maker guide / four buses

An AI device with GPIO, explained for makers.

For makers searching for an AI device with GPIO: what GPIO, I2C, SPI, and UART do in plain language, and how Oneira ships hardware tools on all four.

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Product status

What is available now?

  • Working today

    Working today means the expressive face has been demonstrated on a real Oneira device.

  • Connected beta

    Connected beta features require the Oneira app, internet access, a compatible service, and permissions you approve. They can change and may not work with every service.

What you need

Connected beta features need the Oneira app, internet access, a supported service, and permissions you approve. A separate account or fee may also be required.

The short answer

Oneira ships hardware tools on GPIO, I2C, SPI, and UART, which puts a pocket AI companion on speaking terms with the buses most hobby electronics already use. Detailed electrical specifications are not yet published, so plan projects around the buses, not assumed limits.

Real Oneira development boards and electronics photographed during hardware testing
Real development hardware / bench testing
BusesGPIO / I2C / SPI / UART
StatusShipped today
ScopeLow-voltage hobby electronics
Electrical limitsNot yet published

Oneira Dream Big+

A local AI powerhouse in a star.

Small enough to look playful. Built with a dual AI chip, OLED screen, and 1K camera, plus optional connected experiences you control.

Each $80 Founding Unit includes one Oneira device with a dual AI chip, OLED screen, and 1K camera, plus the selected color and included eye set. Only the final 1K camera module may change before fulfillment. Optional connected services, separate accounts, usage, and third-party fees are not included.

On-device

On-device reactions

Oneira's expressive reactions run on the device, so its face can respond without relying on a cloud request.

See how reactions work ↗
Working prototype

Dual AI chip, OLED screen, and 1K camera

The working prototype includes a dual AI chip, OLED screen, and 1K camera. The dual AI chip, OLED screen, and 1K camera are included in the $80 Founding Unit; only the final 1K camera module may change before fulfillment.

See included hardware ↗
Connected beta

Optional connected services

Optional compatible connected services can extend Oneira when you choose. Setup, permissions, internet access, service terms, accounts, usage, and fees remain separate. Connected experiences work only with compatible services the owner deliberately configures. Oneira does not connect automatically to every service.

See compatible connections ↗
Connected beta

Compatible connected tools

Compatible connected tools are optional and owner-configured. Nothing is preconfigured, and universal compatibility is not promised.

See connected features ↗
Web beta

Dream Big+ photo generation

The 1K camera supports deliberate, owner-triggered experiences. Optional Dream creation can transform a photo when the owner chooses it.

Open Oneira Create ↗
Developer preview

Focused helpers

Optional helper experiences have narrow, visible limits. Broader research, coding, and workspace actions remain in development.

Understand the agent path ↗
The honest boundary

Oneira's focused helpers have narrow, visible limits. Broader research, coding, and approved-workspace actions remain in development.

Plain language

What GPIO, I2C, SPI, and UART actually are.

GPIO means general-purpose input/output: simple on/off pins that can listen to a switch or drive an LED or relay. It is the first bus every maker touches, because one pin and one LED produce one visible result.

I2C is a two-wire bus that many small sensors share at once, each at its own address. SPI is a faster short-range bus that trades extra wires for speed, common for displays and memory. UART is classic serial — two devices talking over two wires, one line in each direction.

  • GPIO: on/off pins for switches, LEDs, relays
  • I2C: shared two-wire bus for sensor clusters
  • SPI: faster short-range bus for displays and memory
  • UART: plain serial between two boards

On Oneira

All four buses ship on the device.

Oneira ships hardware tools on GPIO, I2C, SPI, and UART today — the buses most hobby electronics already speak. That places an AI pocket companion in the same conversations as the sensors, displays, and boards on a maker's bench.

Think in the classes the buses generally serve: GPIO for switch, LED, and relay projects; I2C for the wide family of shared-bus hobby sensors; SPI for small displays and memory; UART for board-to-board serial links. Which specific parts fit is a per-project decision, as with any host.

Limits and safety

Design around published facts, not assumptions.

Oneira's pin counts, voltage levels, and current limits are not yet published. Check the current documentation before designing a circuit that depends on specific electrical assumptions, and treat the buses — not imagined numbers — as the planning surface.

The scope is low-voltage hobby electronics. Household mains power — outlets, fixtures, appliances, anything on the supply side of a wall plug — belongs to a qualified electrician, no matter what device sits on the bench.

Sources and scope

Official facts, linked.

  • Oneira hardware tools — GPIO, I2C, SPI, UART ↗

This independent comparison is not sponsored or endorsed by the compared company. Product names and trademarks belong to their respective owners.

Questions, answered

The details that decide a purchase.

Does Oneira have GPIO?+

Yes. Oneira ships hardware tools on GPIO along with I2C, SPI, and UART.

How many pins does it expose, and at what voltage?+

Those electrical details are not yet published. Check the current Oneira documentation before designing a circuit that depends on a specific pin count, voltage, or current limit.

Which bus should a first project use?+

GPIO. One pin driving one LED gives one visible result, and I2C sensors, SPI displays, and UART links can wait until a project asks for them.

Can it switch my house lights or other mains wiring?+

Treat mains power as electrician territory. Oneira's hardware tools are for low-voltage hobby electronics; anything touching household mains wiring belongs to a qualified electrician.

Is there a subscription for the hardware tools?+

No Oneira subscription is required for the core product. Parts, sensors, and any third-party services in a project are your own purchases.

Keep exploring

Understand the product before you choose it.

Developer guide / physical MCPA physical front door for MCP tools.→Architecture guide / your stack, your choiceWhat is a bring-your-own-AI device?→Hardware / verified before advertisedOneira technical specifications.→

Oneira / current availability

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