Function. DEV Joni develops and maintains foundational, vendor-neutral open technologies: communication protocols, low-level software infrastructure, language interpreters, and compilers. All work remains structurally independent of other commercial actors. This independence ensures our technologies can be adopted, modified, or re-implemented without external control.
Scope. The focus is interoperability, predictable behavior, clear interfaces, and minimal coupling. These technologies are designed as infrastructure components, not products. Any manufacturer or user can integrate them without inheriting hidden dependencies or platform lock-in.
PapaLink. A communication protocol that lets devices from different manucaturers to "speak" the same electrical and digital language. It builds on I2C, an industry-standard two-wire communication method that supports up to 127 devices with unique addresses. The package includes a 3D printable connector, micro-controller firmware for AVR/Arduino micro-processors and host-side software for desktop systems. For more about PapaLink, please see our Wiki page here. .
SaunaLang. SaunaLang. A lightweight programming language designed for small embedded computers. It uses static memory allocation, meaning memory usage is known exactly in advance, which prevents typical embedded failures. It provides well-defined primitive data types and a compact interpreter. This makes it fit for systems that need quick reactions and predictable performance. The toolset includes the interpreter and compiler components.
Interoperability. Scientific and industrial environments mix hardware from many sources. Devices often fail to communicate because each vendor uses its own closed formats or protocols. Clear open standards reduce these incompatibilities and allow different components to function as one system.
Vendor neutrality. Proprietary interfaces create lock-in and restrict experimentation. Open specifications and transparent implementations allow users to inspect, adapt, and replace any layer. No party receives privileged control, which stabilises long-term reliability.
Open-source customisability. Open codebases allow direct modification. This is essential in scientific and industrial settings where constraints, sensors, or workflows differ from standard commercial scenarios. Users can adapt behavior, inspect failure conditions, and extend the system without negotiating access or permissions.
Modularity. Each technology follows minimal-design principles: Unix-style composability and “keep it simple” construction. Components do not depend on each other, and no monolithic framework exists. Users employ only the parts they need. This avoids complexity creep and reduces the risk of one component imposing architecture choices on the entire system.
Alfrisin Oy uses selected DEV Joni technologies in its electric and automation devices. Their use illustrates practical integration without implying exclusivity. The same technologies remain fully available for adoption and extension by any other manufacturer or user. Visit their websites alfrisintechnologies.com to find out more.
Public access. All technologies are documented and maintained in the DEV Joni GitHub repositories. Source code, specifications, and implementation notes are available for direct use in commercial or hobby projects (GPLv3, no warranty). Technical inquiries are handled through via email.