OBJEX LABS

Technical insights

We build from evidence.

Engineering notes on the problems behind our products: local control, data ownership, extreme low-power electronics and systems that keep working without mandatory dependencies.

Every article separates published specifications, bench evidence, engineering judgement and facts still to be confirmed. Read our editorial and technical method.

ELPM-S3LW / Power

Hardware power latch or deep sleep?

Two different ways to leave an IoT node waiting. What remains powered, how wake-up works and when a few nanoamps materially change the energy budget.

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LUMA-6CH / Control

What does local-first actually mean?

A connected controller should not stop working when the internet or its vendor is unavailable. We define which functions must stay local and why.

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ELPM-S3LW / Selection

How to choose an ESP32-S3 LoRa module.

Radio, power, antenna, toolchain, CAD, availability and certification: the checks that matter before design-in.

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ELPM-S3LW / Energy

Designing an autonomous LoRa sensor.

Energy budget, storage, duty cycle, radio peaks and margin for battery or energy-harvesting nodes.

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Connectivity / Selection

LoRa or Wi-Fi for remote sensors?

Distance, obstacles, energy, payload and infrastructure determine the right radio.

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LUMA-6CH / Selection

Choosing a professional LED controller.

Loads, channels, power, wiring, safety and offline behavior to check before installation.

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LUMA-6CH / Comparison

LUMA and professional LED controllers.

Compare Shelly, DALCNET, Loxone, MDT and Casambi by architecture, commissioning, loads, integrations and security.

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LUMA-6CH / Development

LUMA testing and hardware evolution.

Load-test results and the path from concept board to V1.2 prototype, including evidence limits and status.

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Engineering / Industrialisation

From IoT prototype to production.

Hardware, firmware, testing and configuration control needed to turn a demo into a repeatable product.

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Engineering / Cost

How much does a custom IoT device cost?

How to separate engineering, certification, tooling, pilot production and unit cost.

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Engineering / RF

Wireless module or custom RF design?

Time, volume, certification, antenna and total cost when choosing module or chip-down RF.

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Engineering / Compliance

Preparing an IoT device for CE and RED.

Architecture, pre-compliance, test configuration and technical file before the laboratory campaign.

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Engineering / Risk

Why IoT prototypes fail during industrialisation.

Power, RF, components, provisioning and test: the failures a working demo can hide.

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Engineering / Make or buy

Custom hardware or an off-the-shelf device?

A framework for comparing purchase, integration, data control, differentiation and lifecycle cost.

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Manufacturing / Test

Designing a production test fixture.

Test points, limits, programming, identity and traceability for end-of-line testing.

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Engineering / Firmware

Maintainable firmware for connected products.

State, configuration, OTA, rollback and diagnostics for products built to last.

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Engineering / Security

Securing an IoT product before production.

Identity, provisioning, signed updates, local APIs and vulnerability response.

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Engineering / Connectivity

Choosing LoRa, Wi-Fi, BLE, LTE-M or NB-IoT.

Range, energy, payload, infrastructure and operating cost for deployment-led radio selection.

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Manufacturing / Scale

Scaling from 10 to 1,000 units.

Controlled batches, production releases, yield and traceability while volume grows.

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Manufacturing / Documentation

Documentation for manufacturing an electronic product.

BOM, PCB, firmware, test, mechanics, labels and revision control in one release package.

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LUMA-6CH / LED loads

RGBW, Tunable White and addressable LEDs.

Different outputs, wiring and control models for common LED lighting types.

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ELPM-S3LW / Wake

Designing deterministic wake-up.

RTC, external events, power latching and idempotent firmware for nodes that cold-boot every cycle.

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ELPM-S3LW / Measurement

From current trace to runtime.

How to integrate each duty-cycle phase and build a defensible runtime estimate.

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ELPM-S3LW / Connectivity

LoRa, Wi-Fi and BLE in one product.

Assign every radio a role, activation rule and energy budget.

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ELPM-S3LW / Design-in

From module to pilot batch.

Power, RF, carrier PCB, programming, production test and controlled release.

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LUMA-6CH / Power

Sizing LED supplies and cables.

Power, current, voltage drop, margin and protection in 12-24 V systems.

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LUMA-6CH / Channels

Distributing loads across six channels.

Map zones and colours while respecting both channel and total power limits.

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LUMA-6CH / Commissioning

Commission before effects.

Cold checks, first power-up, load-specific tests and documented handover.

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LUMA-6CH / Architecture

Design for the day something is missing.

A failure matrix that keeps control and data available without mandatory dependencies.

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LUMA-6CH / Product design

From PCB to electrical panel.

Why DIN format, mounting, wiring and heat flow belong to a professional controller's architecture.

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Manufacturing / Process

Setting up an in-house assembly line.

Calibration, process control and traceability that turn equipment into a repeatable line.

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ELPM-N54LW / Case study

A 5 mm door sensor powered by its environment.

Indoor photovoltaics, LTO storage, environmental sensing and N54LW's role in new energy-harvesting designs.

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