Arduino VENTUNO Q: How Its Linux and Real-Time Sides Divide Work

Arduino VENTUNO Q: How Its Linux and Real-Time Sides Divide Work

Disclosure: TVG has not tested or benchmarked VENTUNO Q. Specifications and capabilities below are attributed to Arduino’s official documentation and store listing.

Architecture first: Arduino VENTUNO Q is a two-processor platform. Its Qualcomm Dragonwing IQ8 QCS8275 side runs Ubuntu Linux and targets AI and application workloads. A separate STM32H5F5 microcontroller runs Arduino Core on Zephyr RTOS for real-time I/O and control. Arduino connects the domains through a built-in RPC library.

Official Arduino VENTUNO Q board and retail package photograph
Image: Arduino.

What Arduino documents

The IQ8 is listed as an octa-core Arm processor with an Adreno GPU/VPU, Spectra 692 ISP and Hexagon AI processor rated at up to 40 dense TOPS. Arduino lists 16 GB LPDDR5 memory and 64 GB industrial-grade eMMC, plus an M.2 connector for NVMe Gen4 expansion.

The board documentation lists 2.5 Gbit Ethernet, Wi-Fi 6 across 2.4/5/6 GHz, Bluetooth 5.3, two USB 3.0 Type-A ports, a role-switching USB-C port with video output, and HDMI multiplexed with MIPI DSI. Expansion includes UNO shield headers, Qwiic, carrier headers and a 40-pin HAT-compatible header.

Arduino VENTUNO Q architecture separating the Dragonwing IQ8 Linux processor and STM32H5F5 real-time microcontroller
VENTUNO Q divides Linux and AI workloads from Zephyr-based real-time control across two processors linked by RPC.

The control side is not Linux

The STM32H5F5 is a Cortex-M33 microcontroller clocked at 250 MHz with 4 MB flash and 1.5 MB RAM. Arduino positions this Zephyr-based domain for GPIO, PWM, CAN-FD and motor-control work where deterministic scheduling matters. Linux can host higher-level planning, vision, ROS 2 software or local models, while the MCU owns explicitly bounded control tasks.

Acceptance work should measure RPC latency and failure behavior in the intended software image rather than infer them from processor specifications.

Questions to answer before adoption

  • Which signals and safety states remain local to the MCU?
  • What data crosses RPC, at what rate, and what happens if Linux restarts?
  • Do the required cameras, displays, HATs and shields share pins or multiplexed interfaces?
  • What power, thermal and enclosure limits apply to the complete workload?
  • Can the selected model actually run within its memory, accelerator and software constraints?

The dual-domain design is the meaningful feature: it creates a place for Linux/AI software and a separate place for real-time control. Published TOPS, interface rates and processor clocks are component specifications—not proof of application latency or inference performance.

Sources

About TVG Editorial Team

TVG Report editorial coverage for robotics, AI, maker hardware, automation, and STEM technology.

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