#electronics articles

AGAbhipreya Ghoshwowcodeind.hashnode.devJul 1 · 6 min read

VIDYUT: A 210W MPPT Solar Charge Controller Built for Off-Grid IoT (And Why Most MPPT Boards Aren't)

The problem nobody talks about with off-grid IoT By 2034, the world is expected to have more than 40 billion connected IoT devices — up from roughly 17.7 billion in 2024. A huge chunk of that growth i

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AFAeon Flex / Splicer Scornchaincoder.hashnode.devJun 27 · 7 min read

I Mapped an Entire Building’s RF Footprint Without Walking Inside. Here’s How.

It started with a bet. A friend — let’s call him Marcus — works in physical security. He runs RF site surveys for corporate clients. The kind of work where you walk into a building with a spectrum ana

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MWMaggie‌ Wanganypcba.hashnode.devJun 2 · 8 min read

PCB Thermal Gradient and Thermal Stress Design: Preventing Solder Joint Cracking and Via Failure

Have you ever experienced a product that passed functional tests but failed after thermal cycling, or developed intermittent failures after months in the field? Opening the enclosure reveals cracked s

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MWMaggie‌ Wanganypcba.hashnode.devMay 20 · 5 min read

PCB Thermal Management Basics – Don’t Let Your Boards Overheat

Your circuit board works fine in the lab, but in the field it resets randomly, performance degrades, or components burn out. The culprit is often heat. As power density increases, thermal management i

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MWMaggie‌ Wanganypcba.hashnode.devMay 15 · 8 min read

The Complete Guide to PCB Vias: Through‑Hole, Blind, Buried, and Microvias

If you‘ve ever looked closely at a multi‑layer PCB, you’ve noticed the small copper‑plated holes. Those are vias. They might look simple, but choosing the wrong type or size can hurt your signal integ

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MMacaulay001forgottentheorieshashnodedev.hashnode.devMay 11 · 7 min read

I fit V = I R to four devices on the same voltage sweep. Only one of them stayed linear.

Part 65 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. Georg Ohm published Die galvanische Kette, mathematisch bearbeitet in Berlin in 1827. The book argued that c...

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AKAbijah Kajabikablog.abijah.meMay 9 · 9 min read

Teaching a Small LLM to Design Electronic Circuits: Fine-Tuning Qwen3-4B on 100K KiCad Netlists

How I built a 100K-example dataset of executable circuit netlists and fine-tuned a 4B parameter model that scores 88% on functional circuit generation, rivaling GPT-4o's published benchmarks. The Pro

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MWMaggie‌ Wanganypcba.hashnode.devMay 6 · 7 min read

PCB Panelization – Why Your Small Board Is Costing You More Than It Should

Introduction You‘re ordering 100 small PCBs. The quote comes back, and the per-board price seems high — much higher than what you’d expect for such a tiny board. What‘s going on? The answer is often p

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Xx-originating-ipx-originating-ip.hashnode.devApr 30 · 8 min read

Building 'nandtap': Dumping a Cisco Meraki Z1 NAND via Raspberry Pi GPIO Without Removing Chip from Board

TL;DR: https://github.com/x-originating-ip/nandtap As part of some personal upskilling, I wanted to get a better feel for what edge-device forensics actually looks like in practice. It’s one of those

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MWMaggie‌ Wanganypcba.hashnode.devApr 30 · 7 min read

Surface Mount Technology (SMT) Explained – How Modern Electronics Are Built

Introduction Open up any smartphone, laptop, or smartwatch. What do you see? Tiny components — resistors smaller than a grain of rice, chips with dozens of pins — all sitting flat on the board. That's

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VIDYUT: A 210W MPPT Solar Charge Controller Built for Off-Grid IoT (And Why Most MPPT Boards Aren't)

I Mapped an Entire Building’s RF Footprint Without Walking Inside. Here’s How.

PCB Thermal Gradient and Thermal Stress Design: Preventing Solder Joint Cracking and Via Failure

PCB Thermal Management Basics – Don’t Let Your Boards Overheat

The Complete Guide to PCB Vias: Through‑Hole, Blind, Buried, and Microvias

I fit V = I R to four devices on the same voltage sweep. Only one of them stayed linear.

Teaching a Small LLM to Design Electronic Circuits: Fine-Tuning Qwen3-4B on 100K KiCad Netlists

PCB Panelization – Why Your Small Board Is Costing You More Than It Should

Building 'nandtap': Dumping a Cisco Meraki Z1 NAND via Raspberry Pi GPIO Without Removing Chip from Board

Surface Mount Technology (SMT) Explained – How Modern Electronics Are Built

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#electronics

Explore Hashnode

Trending tags this week

VIDYUT: A 210W MPPT Solar Charge Controller Built for Off-Grid IoT (And Why Most MPPT Boards Aren't)

I Mapped an Entire Building’s RF Footprint Without Walking Inside. Here’s How.

PCB Thermal Gradient and Thermal Stress Design: Preventing Solder Joint Cracking and Via Failure

PCB Thermal Management Basics – Don’t Let Your Boards Overheat

The Complete Guide to PCB Vias: Through‑Hole, Blind, Buried, and Microvias

I fit V = I R to four devices on the same voltage sweep. Only one of them stayed linear.

Teaching a Small LLM to Design Electronic Circuits: Fine-Tuning Qwen3-4B on 100K KiCad Netlists

PCB Panelization – Why Your Small Board Is Costing You More Than It Should

Building 'nandtap': Dumping a Cisco Meraki Z1 NAND via Raspberry Pi GPIO Without Removing Chip from Board

Surface Mount Technology (SMT) Explained – How Modern Electronics Are Built