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Supporting Next-Generation Unmanned Systems with Embedded I/O

As unmanned and autonomous systems continue to expand across defense, industrial, and scientific applications, the need for compact, rugged, and flexible embedded I/O has never been greater. From aerial drones and autonomous aircraft to underwater vehicles and mobile ground platforms, modern unmanned systems depend on reliable data acquisition, telemetry, control, and sensor interfacing in environments where vibration, temperature extremes, and limited space are all part of the design challenge.

ACCES I/O Products has, and is currently supporting, multiple embedded I/O projects in the broader drone and autonomous systems market, including applications involving unmanned aerial vehicles (UAVs), unmanned underwater vehicles (UUVs), and other rugged mobile platforms. These projects often require a combination of analog I/O, digital I/O, serial communication, and isolated interfaces in a compact form factor suitable for space-constrained embedded systems.

Why Embedded I/O Matters in Drone and Autonomous System Design

Unmanned platforms are often tasked with collecting sensor data, controlling subsystems, and communicating with onboard or remote equipment in real time. Depending on the application, an embedded I/O subsystem may be responsible for functions such as:

  • Acquiring analog sensor signals from pressure, temperature, position, or other instrumentation
  • Interfacing with landing gear, control surfaces, or actuator systems
  • Monitoring status and health data from onboard subsystems
  • Providing digital control and discrete I/O for mission-specific functions
  • Supporting serial communications to avionics, navigation, telemetry, or payload equipment
  • Isolating sensitive control and monitoring signals in electrically noisy environments

Unlike consumer drones, many defense, scientific, and industrial unmanned systems are deployed in harsh environments and are expected to operate reliably under shock, vibration, thermal stress, and extended mission cycles. This places additional importance on robust I/O hardware and proven embedded interfaces.

The unmanned and autonomous systems market spans a wide range of defense, scientific, and industrial programs, including projects pursued by major aerospace and defense companies such as Northrop Grumman, General Atomics, AeroVironment, Boeing, Lockheed Martin, L3Harris, Kratos, and others. These platforms often require compact embedded I/O for telemetry, control, sensor acquisition, and subsystem integration in space-constrained and rugged environments. ACCES I/O products are well suited for this class of application, particularly where analog I/O, digital I/O, serial communications, and embedded form factors such as M.2 and PCI Express Mini Card (mPCIe) are required.

ACCES I/O Solutions for Unmanned Platforms

ACCES I/O offers a range of compact embedded I/O products well suited for UAV, UUV, and other autonomous system applications. In many unmanned system designs, engineers require a mix of I/O functions rather than a single type of sensor interface. A typical platform may combine analog measurement, isolated digital control, and serial communications within the same embedded controller.

For these applications, compact form factors such as M.2 and PCI Express Mini Card (mPCIe) are often an excellent fit. These product families provide a small footprint while still supporting the analog, digital, and serial interfaces commonly required in mobile embedded designs.

Depending on the project, ACCES hardware used in unmanned systems may include:

  • Analog input and analog output for sensor acquisition, command signals, and subsystem control
  • Digital I/O for status monitoring, discrete controls, and logic-level interfacing
  • Isolated digital I/O for added protection in electrically noisy or mixed-voltage systems
  • Serial communications for integration with telemetry, navigation, and external control devices

Because each platform has different control, sensing, and communication requirements, embedded systems can greatly benefit from leveraging the flexibility of add-on I/O, allowing a wide array of I/O types to be combined by selecting a mix of peripheral modules.

Example Use Cases in Drone and Autonomous Applications

The unmanned systems market covers a broad range of applications, and embedded I/O requirements vary accordingly. ACCES solutions can support use cases such as:

Flight Control and Landing System Integration

In some aerial platforms, embedded I/O is used to interface with landing-related systems, telemetry, and control subsystems as part of broader flight hardware modernization efforts. Analog and digital interfaces can be used to monitor position, status, and command signals while supporting integration with onboard computing platforms, while serial provides a convenient way to couple acquisition with GPS timestamps.

Sensor Acquisition and Telemetry

Unmanned systems often gather real-time data from a variety of sensors. Analog input channels can be used to acquire instrumentation data, while serial and digital interfaces support telemetry hardware, navigation systems, and subsystem communications.

Rugged Mobile and Autonomous Platforms

The same embedded I/O technologies used in UAVs can also be applied to other rugged mobile environments, including autonomous ground systems, specialized vehicles, and field-deployed platforms that require reliable I/O under shock, vibration, and thermal stress.

Underwater and Research Platforms

Unmanned underwater vehicles and scientific research platforms can benefit from compact embedded I/O for monitoring, data logging, subsystem control, and communications where space is limited and reliability is critical.

Why M.2 and mPCIe Work Well in These Designs

For many embedded drone and autonomous applications, M.2 and mPCIe form factors strike an effective balance between size, performance, and mechanical practicality. These formats are widely used in embedded systems where board space is limited, and they allow engineers to integrate high-value I/O functions without resorting to larger external assemblies.

In practice, these compact boards are often installed in systems where they are mechanically supported by the host design, enclosure, or thermal interface materials. When properly integrated, they provide a robust embedded I/O option for mobile and vibration-prone environments while maintaining the flexibility needed for mixed-signal and communications-heavy designs.

Beyond Drones: A Platform Approach to Rugged Embedded I/O

One of the strengths of ACCES I/O hardware is that the same building blocks used in drone and autonomous applications are equally valuable across many other rugged embedded designs. Mobile communications systems, remote monitoring platforms, defense electronics, and specialized industrial equipment often share the same core I/O needs:

  • compact embedded form factors
  • reliable analog and digital interfacing
  • rugged deployment capability
  • long-life availability and support
  • flexibility for OEM customization

That makes ACCES I/O a strong fit not only for unmanned systems, but for a much broader class of embedded applications operating beyond the office or lab.

Embedded I/O for the Next Generation of Unmanned Systems

As UAV, UUV, and other autonomous platforms continue to evolve, designers need embedded I/O solutions that are compact, flexible, and rugged enough for real-world deployment. ACCES I/O’s portfolio of M.2, mPCIe, and other embedded I/O products gives system designers a practical way to add analog, digital, serial, and isolated I/O to demanding unmanned applications without sacrificing reliability or integration flexibility.

If you are developing an unmanned aerial, underwater, or mobile autonomous system and need embedded I/O for sensing, telemetry, control, or subsystem integration, ACCES I/O can help identify the right combination of hardware for your application.

Related ACCES I/O Product Families

M.2 Embedded I/O Products

PCI Express Mini Card (mPCIe) I/O Products

Analog I/O Products

Isolated Digital I/O Products

Serial Communication Products

Flexible I/O Expansion for PCIe/104 Embedded Systems

PCIe/104 systems remain widely used in embedded, industrial, defense, transportation, robotics, and rugged mobile applications where compact size, stackable architecture, and long-term availability matter. These systems are often deployed in environments where space is limited, reliability is critical, and the I/O requirements can vary significantly from one project to the next.

One challenge with traditional embedded I/O design is that each required function can consume valuable stack space. A system may need analog input, digital I/O, serial communication, wireless connectivity, storage, or isolated interfaces, but adding a dedicated PCIe/104 board for each function can quickly increase—or exceed—stack height, cost, and mechanical complexity.

The ACCES I/O Products 104e-mPCIe carrier family provides a flexible way to expand a PCIe/104 system by adding multiple PCI Express Mini Card modules in a single stack position.

Add-On I/O Modules for Flexible System Configuration

Instead of selecting one fixed-function I/O board for every requirement, designers can use mPCIe add-on I/O modules to build a more flexible system configuration. With the appropriate carrier, a single PCIe/104 card position can support up to four mPCIe modules.

This allows one embedded stack to support a mix of I/O types, such as:

  • Analog input or analog output
  • Digital I/O
  • Isolated digital I/O
  • Relay or FET outputs
  • RS-232, RS-422, or RS-485 serial communication
  • Quadrature input
  • Wireless or cellular connectivity
  • mSATA storage, where supported

This modular approach is especially useful when a base embedded platform needs to support multiple variants of the same system. Instead of redesigning the full stack for each customer or application, the designer can select different mPCIe modules to match the required I/O mix.

Using Four mPCIe Cards in One PCIe/104 Stack Position

The major advantage of the ACCES 104e-mPCIe carrier family is density. The carrier allows up to four mPCIe cards to be installed while consuming only one PCIe/104 stack-height card position.

This is valuable in applications where mechanical space is limited or where reducing stack height improves ruggedness, thermal design, serviceability, or packaging.

For example, one system could be configured with:

  • One mPCIe analog input module
  • One mPCIe isolated serial module
  • One mPCIe digital I/O module
  • One mPCIe relay or FET output module

That creates a highly customized embedded I/O configuration without requiring four separate PC/104-style boards in the stack.

104e-mPCIe-4A vs. 104e-mPCIe-4

ACCES offers two closely related carrier approaches depending on the host system and available PCIe resources.

The 104e-mPCIe-4A is an advanced PCIe/104 carrier that converts one PCIe x1 lane from the stack into up to four mPCIe sockets. This makes it useful when the system has limited PCIe lane availability but still needs multiple add-on modules.

The 104e-mPCIe-4 family is intended for systems where multiple PCIe lanes are available from the stack. It converts four PCIe x1 lanes into up to four mPCIe sockets.  Multiple 104e-mPCIe-4A can be used in a single stack, providing up to 16 mPCIe sockets (all with PCIe and USB signalling) in a single PCIe/104 system!

Both approaches allow engineers to add compact mPCIe-based expansion to a PCIe/104 system while preserving the benefits of the rugged stackable embedded architecture.

Why mPCIe Works Well in PC/104-Class Systems

PCI Express Mini Card remains a practical form factor for embedded I/O because it is compact, widely understood, and well suited for modular expansion. It allows system designers to add specific I/O functions without committing to a larger board design for each function.

For PC/104 and PCIe/104 systems, mPCIe is particularly useful because it supports a modular “building block” approach. A designer can start with a rugged embedded stack and then populate the carrier with the I/O functions required for the final application.

This can reduce:

  • Custom board development
  • Stack height
  • Cabling complexity
  • Inventory burden
  • Time to configure customer-specific systems

Ideal Applications

A modular PCIe/104-to-mPCIe expansion approach is well suited for:

  • Rugged embedded control systems
  • Defense and aerospace platforms
  • UAV and autonomous systems
  • Robotics
  • Mobile test and measurement
  • Transportation systems
  • Industrial automation
  • Legacy PC/104 system modernization
  • OEM systems requiring multiple I/O configurations

In many of these applications, the exact I/O mix may change from one project to another. A modular carrier strategy allows the system designer to keep the core platform consistent while adjusting the I/O configuration as needed.

ACCES I/O Product Fit

The 104e-mPCIe carrier family is designed to work with ACCES I/O’s broad range of industrial mPCIe products, including analog, digital, isolated, serial, relay, FET, and quadrature I/O modules, as well as any PCIe, USB, mSATA, or other mPCIe cards from any vendor.  Each slot also comes with a SIM socket, enabling additional wireless connectivity.

This gives engineers a practical way to combine multiple I/O functions in one compact PCIe/104 stack position while still using rugged, industrial-temperature hardware designed, built, and supported by ACCES I/O Products in San Diego CA USA..

For embedded systems where flexibility, compact size, and long-term support matter, the 104e-mPCIe family provides a powerful way to modernize and expand PC/104-class systems without giving up the stackable architecture that made the platform valuable in the first place.

Related ACCES I/O Products

104e-mPCIe-4A Family

104e-mPCIe-4 Family

ACCES PCI Express Mini Card (mPCIe) I/O Products

ACCES PC/104 and PCIe/104 Embedded I/O Products

ACCES I/O Products Introduces New Powerful High-Speed Multifunction Analog I/O Line with 4-20mA current outputs/inputs for Embedded Systems in PCI Express Mini Card (mPCIe) Form Factor

New mPCIe-DAAI16-8F offers 16-bit precision, simultaneous analog output and input, and flexible digital I/O

SAN DIEGO, CA — November 5, 2025 — ACCES I/O Products, Inc. proudly announces the release of the mPCIe-DAAI16-8F, a high-performance PCI Express Mini Card (mPCIe) multifunction analog output/input module that delivers 16-bit precision, simultaneous analog output and input, and flexible digital I/O — all in a small, rugged design ideal for embedded and OEM applications.

The mPCIe-DAAI16-8F integrates eight 16‑bit analog outputs supporting both voltage and current outputs, ideal for applications that need 4-20mA control. In addition to the flexible DAC outputs, eight 16-bit analog input channels software‑selectable as 8 single‑ended or 4 differential inputs are included. An aggregate analog‑input sampling rate up to 1 MSPS supports dynamic measurements, while each DAC channel can perform hardware‑paced waveform playback up to 125 kSPS per channel simultaneously. A compact, double‑stack mPCIe Type F1 form factor with latching I/O connectors enables reliable operation in shock and vibration prone environments.

Factory options include extended temperature of -40°C to +85°C, current inputs (4-20mA, 10-50mA), voltage dividers for higher voltage inputs, and HART modem capability.  Additional customization options include conformal coating, custom software / product-labeling, and more — even entirely new features customized to your specific needs, enabled by our advanced FPGA-based design.

Key features of the mPCIe-DAAI16-8F Family include:

  • PCI Express Mini Card (mPCIe) Type F1 (full length) with high-retention latching connectors vs shock/vibration
  • Eight 16‑bit analog outputs with software selectable current (4–20 mA, 0–20 mA, 0–24 mA) and voltage ranges
  • Hardware‑paced DAC waveform streaming up to 125 kSPS per channel using onboard FIFO + DMA architecture
  • Eight 16‑bit analog inputs — software‑selectable as 8 single ended or 4 differential; up to 1 MSPS aggregate ADC rate
  • Seven per‑channel programmable differential, bipolar input ranges
  • Eight digital I/O pins (4 inputs, 4 outputs) can be used for triggering, status, or control and optional digital integration features (pulse/PWM generation and measurement, edge‑specific IRQs and counting)
  • Flexible A/D triggering — start sources include software, internal timer, external start, and externally triggered timer start for precise synchronization.
  • Onboard watchdog with status output
  • Factory options: HART modem (on DAC #0), 4–20 mA / 10–50 mA ADC inputs, per-channel input voltage dividers, conformal coating, and more.
  • Made in the USA; RoHS compliant

All ACCES mPCIe (and M.2) cards offer high retention latching connectors for shock and vibration mitigation as well as an optional extended operating temperature of -40°C to +85°C. The small size (mPCIe Type F1: 30mm x 50.95mm) allows for maximum performance in embedded applications where space is a valuable resource.

These cards are supported for use in most operating systems and include a free Linux and Windows compatible software package. This package contains sample programs and source code in C# and Delphi for Windows. Linux support includes installation files and samples for programming level via our open-source kernel driver. Third party support includes a Windows standard DLL API library usable from most popular application programs. Embedded OS support includes the family of Windows Operating Systems including IoT. ACCES also now offers a VxWorks driver/library for the ultimate real-time process monitoring and control solution.

For detailed technical specifications, a datasheet, and user manual, please visit the product webpage at: https://accesio.com/product/mpcie-daai16-8f/

About ACCES I/O Products, Inc.

For over 35 years, ACCES I/O Products, Inc. has supplied an extensive range of analog, digital, serial communication, and isolated I/O boards and solutions, including a line of popular rugged USB hubs. ACCES also offers complete systems, integration services and enclosures with a quick turn-around on custom projects including software. ACCES products are designed for use with mPCIe (PCI Express Mini Card), M.2, PCI Express, PCIe/104, Ethernet, USB, PCI, PC/104, and ISA, as well as distributed, wireless I/O, and computer-on-module (COM) form factors. All hardware comes with a 30-day, no-risk return policy and a three-year warranty. For further information, visit the company’s web site at www.accesio.com.

 

Price: Prices start at $559, Please inquire for OEM and volume pricing
Availability: Now
Delivery: Stock to two weeks ARO
Card Images: 300 dpi JPG | 300 dpi PNG | Download DOCX | View as PDF

 

For Further Information, Contact:

Chris Persidok

Marketing Communications Director ACCES I/O Products, Inc.

 

10623 Roselle Street, San Diego, CA 92121-1506

Tel: 858.550.9559

E-mail: cpersidok@accesio.com

URL: www.accesio.com

 

High-Speed Ethernet Multifunction Analog I/O Module with Advanced Features

New eNET-AIO16-16F offers high-precision data acquisition over TCP/IP networks

SAN DIEGO, CA — August 19, 2025 — ACCES I/O Products proudly announces the release of its newest Ethernet-based data acquisition computer solution—the eNET-AIO16-16F. This standalone, high-speed analog input/output module delivers reliable, flexible, and high-performance DAQ capability over any TCP/IP network. Designed for demanding real-world applications, the eNET-AIO16-16F supports up to 1 million samples per second and includes both analog and digital I/O, all within a rugged, compact enclosure ready for harsh environments.

Ideal for remote monitoring, process control, and test systems, this flexible module communicates over standard 10/100/1000 Base-T Ethernet, supporting multiple simultaneous connections. Analog inputs can be sampled as either single-ended or differential, with per-channel programmable gain ranges, making it easy to capture diverse signal types without additional front-end circuitry.

Ethernet multi function analog I/O
High-Speed Ethernet Analog I/O

With its on-board ARM processors, Linux, and intelligent firmware, the eNET-AIO16-16F can be used as a smart DAQ node on a network, or in direct-to-PC applications using ACCES’s easy-to-use API and drivers.

Factory options include extended temperature of -40°C to +85°C, current inputs (4-20mA, 10-50mA), signal conditioning for higher voltage inputs and PoE (Power Over Ethernet) for ultimate convenience.

Additional customization options include conformal coating, custom software, OEM product labeling, and more — even entirely new features, enabled by our advanced embedded TI Sitara AM6422-based design, which directly supports IIoT protocols including EtherNet/IP, PROFINET RT & IRT, and more!

Key features of the eNET-AIO16-16F Family include:

  • 16 analog inputs, software selectable as single-ended or 8 differential
  • 16-bit A/D converter with sustained sampling at up to 1MHz
  • 8 software programmable per channel input ranges
  • Autocalibration and filtering onboard for accurate data
  • 4 analog outputs (DACs) with 16-bit resolution and 4 factory ranges
  • 16 flexible digital I/O lines; can be used for triggering, status, or control
  • 10/100/1000 Base-T Ethernet with support for multiple simultaneous connections
  • On Board Intelligence: Built on IEC 61508-certified TI Sitara AM6422 SoC
  • Custom Code Ready: Run your own Linux apps with full access to all DAQ and processor resources
  • Compact, rugged enclosure with various mounting options for easy integration

Custom Software and OS Support:

Because of Ethernet’s ubiquitous nature these boards are supported for use in all operating systems — including Windows, Linux, Unix, iOS, Android — even Raspberry PI, etc.  The software package includes free Linux and Windows software with sample programs and source code in C# and Delphi for Windows.  Also provided is a graphical setup program in Windows and extensive Ethernet-packet level API documentation.  Third party application support includes a Windows standard DLL API usable from most popular application programs. Embedded OS support includes Windows Embedded Standard, Windows IoT, and all applications, operating systems, PLCs, and other devices capable of TCP/IP communication.

For detailed technical specifications, a datasheet, and user manual, please visit the product webpage at: https://accesio.com/product/enet-aio16-16f/

About ACCES I/O Products, Inc.

For over 35 years, ACCES I/O Products, Inc. has supplied an extensive range of analog, digital, serial communication, and isolated I/O boards and solutions, including a line of popular rugged USB hubs. ACCES also offers complete systems, integration services and enclosures with a quick turn-around on custom projects including software. ACCES products are designed for use with mPCIe (PCI Express Mini Card), M.2, PCI Express, PCIe/104, Ethernet, USB, PCI, PC/104, and ISA, as well as distributed, wireless I/O, and computer-on-module (COM) form factors. All hardware comes with a 30-day, no-risk return policy and a three-year warranty. For further information, visit the company’s web site at www.accesio.com.

 

Price: Prices start at $1169, Please inquire for OEM and volume pricing
Availability: Now
Delivery: Stock to two weeks ARO
Card Images: 300 dpi JPG | 300 dpi PNG | Download DOCX | View as PDF

 

For Further Information, Contact:

Chris Persidok

Marketing Communications Director ACCES I/O Products, Inc.

10623 Roselle Street, San Diego, CA 92121-1506

Tel: 858.550.9559

E-mail: cpersidok@accesio.com

URL: www.accesio.com