FOUNDATION SERIES · MODULE GUIDE 01
Small hub. Big possibilities.
microEDDIE Basic & Pro
Connect your computer, sensors and EDDIE network with a compact, programmable hub. Start with Basic, or bring serial instruments and controlled power into the picture with Pro.
Isolated USB-C
On-board K4
Expandable
USB-C
Isolated computer connection
SD card
Local storage on both models
Q port
I²C sensor expansion
9–36 V DC
External power input
01 / OVERVIEW
The starting point for your measurement system.
microEDDIE is a hub: the link between your computer and the modular EDDIE system. Connect pods locally, then extend your setup with UniProbes over the EDDIE CAN network.
Connect with confidence
An electrically isolated USB-C interface separates your computer from the EDDIE system. The hub uses external power rather than drawing power from USB.
Build on K4
EDDIE’s built-in language and multitasking environment support on-device programming. Use KAT, the K4/J4 IDE, to develop your application.
Grow your setup
Add compatible I²C pods through the Q port, or connect UniProbe modules over K4net as your measurement and control needs develop.
02 / CHOOSE YOUR MODEL
The essentials. Or the extra interfaces.
Both models share the core microEDDIE features. Pro adds connections for serial equipment, programmable power and SPI peripherals.
THE CORE HUB
microEDDIE-Basic
A straightforward starting point for USB-connected systems, local storage and I²C pods.
- ✓ Isolated USB-C computer connection
- ✓ SD card storage
- ✓ Built-in Q connector for I²C pods
- ✓ EDDIE CAN network expansion
MORE CONNECTIONS
microEDDIE-Pro
All the Basic features, with extra interfaces for instruments, peripherals and power control.
- ✓ Every microEDDIE-Basic feature
- ✓ RS-232 / RS-485 serial interfaces
- ✓ Programmable power supply output
- ✓ SPI peripheral port
Basic and Pro at a glance
Feature
Basic
Pro
Isolated USB-C
Included
Included
SD card storage
Included
Included
Q port · I²C
Included
Included
UniProbe network connection
Included
Included
RS-232 / RS-485
—
Included
Programmable power output
—
Included
SPI port
—
Included
03 / CONNECTIONS & POWER
A place for each part of your system.
Standardised interfaces keep the hub, sensor pods and UniProbe network connected.
Computer & storage
Connect to a computer through isolated USB-C. Use the SD card interface for local storage.
Sensors & expansion
The Q port carries I²C for compatible Qwiic, PiicoDev and STEMMA QT pods. A latching 4-pin UniProbe connection links the hub to the EDDIE CAN network.
External power
Supply 9–36 V DC at the 2-pin power input. A microEDDIE can also be powered through the UniProbe connection by a suitable power module, such as the B1.
Serial, power & SPI
Connect RS-232 / RS-485 equipment, control a programmable supply output, and add SPI peripherals. See the hardware reference for connector definitions and electrical limits.
Planning your power supply
The Type 1 programmable output is specified at 9–24 V DC and cannot exceed the input supply voltage. A 24 V output therefore needs an input supply of at least 24 V. Confirm the load and connector requirements for your setup before connection.
04 / IN THE EDDIE SYSTEM
Start here. Expand from here.
Keep the hub at the centre and choose the modules your application needs.
01
microEDDIE hub
Computer link, K4 application and storage
02
UniProbes
Distributed measurement and control over K4net
03
Pods & Peas
Compatible sensors and analogue signal conditioning
Pods can also connect directly to the hub’s Q port. Peas connect through compatible interfaces.
05 / SOFTWARE & RESOURCES
From connections to your application.
HARDWARE
Ports & architecture ↗
Explore the EDDIE ecosystem and standard connector specifications.
SOFTWARE
The EDDIE software stack ↗
Learn how the software supports measurement and control.
DEVELOPMENT
The K4 book ↗
Explore the language used to build your on-device application.
Feature summary based on the EDDIE Hardware Architecture Overview, reviewed 9 November 2026. Refer to the current hardware documentation for full electrical specifications.
LET’S BUILD YOUR SETUP
Which microEDDIE fits your project?
Tell us what you need to measure, connect or control.