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DECT NR+ · Technical 3 Nov. 2026 · 11 min

Spinel over SPI and UART: driving the Opener DECT NR+ radio from a host

How we adapted OpenThread's Spinel protocol to DECT NR+ in the Opener stack: mapping the driver API, UART HDLC and SPI transports, and testing with Twister.

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DECT NR+ · Opener 3 Nov. 2026 · 8 min

Opener: where does the open source DECT NR+ stack stand?

A reminder of the Opener Initiative, the stack architecture, what works today and the roadmap. By Codium, TSG member.

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DECT NR+ · Event 3 Nov. 2026 · 6 min

DECT World 2026: our table at the Opener pre-event

NR+Gate, NR+Node, nrp-sniffer, nrp-ping, nrp-web and real-time sensor data on the Opener stack: a look back at our table at the DECT World 2026 pre-event.

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RF · Bluetooth Low Energy 30 Oct. 2026 · 6 min

BLE: +8 to +13.8 dB through nRF54L impedance matching

Two boards, three capacitors swapped, zero new components. How we recovered up to 14 dB of transmit power that was being lost before it even reached the antenna. Measurements included.

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Event · DECT NR+ 29 Sep. 2026 · 4 min

DECT World 2026: Codium shows its DECT NR+ boards at the Opener pre-event

On 2 November in Munich, our NR+Gate and NR+Node boards run the Opener stack live, with a radio ping-pong and an NR+ sniffer demo.

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Firmware · Open Source · LTE-M 14 Jul. 2026 · 8 min

From an SGP.02 SIM card to a fix merged into the nRF Connect SDK

Some SIM cards refused to connect our LTE-M gateways. The culprit was a bug in the SDK we all share. How we found it, fixed it, and got it merged upstream — in six lines.

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DECT NR+ · 5G · Industrial IoT 1 Apr. 2026 · 12 min

DECT NR+: the 5G wireless protocol for critical IoT networks

An ITU-recognised 5G protocol that works without an operator, on licence-free spectrum, in self-organising mesh. Codium, member of the Opener Initiative, breaks down what's under the hood.

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EDA · PCB · Open Source 2 Apr. 2026 · 10 min

KiCad in a professional environment: a credible alternative to industry giants?

KiCad in real industrial use: hundreds of professional boards, a digitised production flow, and zero inferiority complex against Altium users.

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Firmware · RTOS · Embedded Linux 4 Mar. 2026 · 15 min

From microcontroller to embedded Linux: field experience

Zephyr vs FreeRTOS vs NuttX, Linux kernel drivers, custom BSP — two distinct worlds with their own challenges. What we've learned from working in both.

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Cybersecurity 26 March 2026 · 9 min

IoT Cybersecurity in 2026: RED Directive, Cyber Resilience Act and product compliance

RED, CRA, CSPN, IEC 62443… What these regulations mean concretely for manufacturers of connected devices. The 4 security pillars every product must address.

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Production 10 Feb. 2026 · 6 min

Manufacturing PCBs in France: it's absolutely possible

52-week lead times from an Indian supplier. How Codium reshored production for a large industrial group using 8 design optimisation levers — at the same price.

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