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Regulation, electronic design, firmware and real projects, newest first.
Two hand warmer recalls and the white-label risk
Two brands recall near-identical hand warmers in the US over overheating risk. What to ask your manufacturer before you put your brand on anything with lithium inside.
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2GB Raspberry Pi goes up $12.50: do you need that RAM?
Raspberry Pi raises its 2GB models by $12.50 and asks you to check whether you really need that RAM. How to measure it, and why your software should boot on the smallest variant.
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The ESP32-C3 now costs double: review your quote
The ESP32-C3 went from $1.80 to $3.83. Why the quote from six months ago no longer holds, and how to protect your margin before production.
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Mass PCB production: quality or price? How to decide
Pay more for quality or squeeze the price when building boards at volume? The arguments on both sides and the numbers that decide.
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Bluetooth 7 doesn't exist yet: what to check in a chip
What each Bluetooth version really added, why most of its features are optional, and what to specify when choosing a BLE chip.
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CRA reporting: what you need in place by 11 September
A 24-hour early warning, a 72-hour notification and a field firmware inventory. What to have ready before the CRA's first hard deadline.
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The real danger of fake chargers: comparing the schematics
Which components disappear when a charger is optimised for cost, and why nearly all of them were regulatory requirements.
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CE marking when your product has a battery
Battery Regulation 2023/1542, IEC 62133 and UN 38.3: the three separate fronts that open up with a lithium cell.
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Do firmware updates invalidate CE marking?
When an over-the-air update is a substantial modification, and how to design updates so it never is.
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CE marking: real costs and pre-compliance
What CE marking really costs for an electronic product: EMC testing, the technical file and the overspend that early pre-compliance prevents.
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VandalStop: anti-theft alarm for vending machines
A real product development case for an anti-theft alarm for vending machines, focused on electronics, detection and the final product.
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How an AI motion sensor learned when to switch the lights on
A practical case about intelligent detection, automation and applied learning in a real motion-sensor system.
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Top 5 real-life Arduino projects
Five real examples to discover practical Arduino applications and how it is used in projects beyond basic learning.
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7 mistakes when building your first prototype that can ruin your idea
Seven common mistakes when building a first electronic prototype, and how to avoid losing time, money and idea validation.
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How to prototype a product
A guide to understand where to start, which stages to follow and how to approach a first functional prototype without losing sight of validation.
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How to validate the feasibility of an idea or invention
An article to validate whether an idea solves a real problem, measure market interest and decide when it makes sense to move towards an MVP.
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What circuits would look like if we used ternary logic instead of binary
A technical article about how circuits would change if they worked with three states instead of two, and what advantages and limitations ternary logic would have.
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My story with Arduino
A personal story about how I started with Arduino, which major projects I have completed and how it changed the way I see the world and approach problems.
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How to download the Arduino IDE for free
Download the Arduino IDE easily and completely free of charge. With this software you can program all the projects you want.
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ESP32 FAQ
A resource to answer common questions about what ESP32 is, how to power it, how to program it from the Arduino IDE and what applications it is commonly used for.
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Arduino FAQ
A guide to answer common questions about what Arduino is, what you can do with the platform, how to power it, which kit to choose and how to start learning.
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