Heimonen Solutions

Heimonen Solutions AS is a research and development consultancy based in Oslo, Norway, that takes on hardware and software projects including circuit and PCB design, embedded firmware, systems architecture, and networking. They specialize in diagnostics, component-level repair, and reverse engineering for undocumented or difficult-to-replace equipment. The company serves clients in sectors such as marine electronics, offshore energy, and networking, with work on foiling boat electronics and industrial ultrasound equipment. They also contribute to projects like the NAV network administration system.

The consultancy operates out of Oslo, Norway, and their in-house lab features a flagship Rohde & Schwarz RTO1024 instrument for measuring high-bandwidth differential pairs and signal integrity. This equipment allows them to perform pre-compliance testing and recreate field phenomena on their bench before any work goes to a client's platform or network. Their automated test setups enable them to catch problems early without relying on third-party lab time.

They offer a range of services including bare-metal and RTOS firmware written against actual hardware constraints, backend services for connecting devices and data, and open hardware design. Their portfolio includes an OSHWA-certified Power-over-Ethernet shield for Raspberry Pi and a published npm package for Node-RED integration. They also handle component-level fault finding and repair for industrial ultrasound equipment used in offshore inspection.

Joar Heimonen is the founder who also maintains a personal blog, while Aron Heimonen handles the commercial side including finance and bookkeeping. The company's organizational number is 938 067 937, and they operate as a small team focused on prototyping and testing everything before client deployment. Their approach emphasizes first-principles investigation and experimentation from early prototypes to production-ready boards.

The business has no stated delivery times, return policies, or warranty terms in their public materials. They focus on prototyping and testing internally before client delivery, which helps catch issues early. Their process involves moving from first-principles investigation to a working proof of concept before final deployment.

Heimonen Solutions is located at Oslo, NO.

You can reach Heimonen Solutions by e-mail at contact@joar.me.

The official website of Heimonen Solutions is heimonen.no.

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