Build Your HAT++ Stack

Combine BE-IIS interface boards without guesswork.

Assign unique IDs, validate daughterboards and add the complete stack to your DigiKey basket.

BE-IIS HAT++

BE-IIS HAT++ — now available on DigiKey.

Discover the advantages of the HAT++ concept and see how little integration effort is required.

BE-IIS-HPP-T1L 10BASE-T1L Test over 100 m YV Cable

BE-IIS-HPP-T1L in a practical 10BASE-T1L field test.

See how two Raspberry Pi systems communicate over 100 m YV cable with simple Linux integration and near 10 Mbit/s performance.

BE-IIS-HPP-T1L 10BASE-T1L Test over 100 m YV Cable

Fetch. Build. Reboot. Running.

Focus on your application instead of Linux integration work.

Use ready-to-integrate industrial interfaces for Raspberry Pi based systems. (Rev. A Hardware)

Why HAT++ is different

From trial-and-error integration to a structured system concept.

Compare BE-IIS HAT++ with conventional Raspberry Pi HAT solutions.

Conflict-Free Interface Stacking

BE-IIS HAT++ introduces instance-based hardware configuration.

Combine multiple HATs with predictable SPI, IRQ and I2C assignments. (Rev. A Hardware)

OPEN HARDWARE REVIEW 3 HATs are currently open for schematic review. Help improve BE-IIS hardware: the first confirmed functional hardware bug wins the corresponding HAT for free. Open reviews →

Stackable Raspberry Pi HATs

Combine multiple BE-IIS HATs without GPIO conflicts. Automatic detection and structured HAT++ integration keep even complex stacks manageable.

Industrial Interfaces

Add CAN-FD-SIC, RS-485, UART, 10BASE-T1S, 10BASE-T1L and SPI Ethernet to Raspberry Pi systems.

Ready for Linux

Drivers, overlays and configuration are installed through one Git-based installer — ready to use with standard Linux tools.

Build Complete Systems

Create gateways, protocol converters, test systems, sniffers and industrial prototypes by combining multiple interfaces on one Raspberry Pi.

Open and Documented

Datasheets, schematics, interactive board layouts, software, test tools and example configurations are openly available.

Education & Open Source

Educational institutions, open-source projects and innovative makers can request discounted hardware for non-commercial projects. Pitch your project.

BE-IIS

Hardware, development and manufacturing

From ready-to-use HATs to custom electronics and manufactured assemblies.

PRODUCTS