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Ccircuitrockscircuitrocks.hashnode.dev15h ago · 3 min read

Raspberry Pi 5 and ESP32-S3 Power an Offline AI Steampunk Helmet

Can a Raspberry Pi 5 run a talking AI, a servo-driven eyeball, LED effects, and a live video feed at the same time, strapped to someone's head, with zero internet? DeepSea Developments says yes, and t

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TTheapplediscussiontheapplediscussion.hashnode.devAug 27 · 2 min read

Apple Watch AOD Is Your Biggest Battery Drain — Here's Proof

If you could change one Apple Watch setting to get meaningfully more battery life, the answer is unambiguous: turn off Always-On Display. Not because it's a hidden trick. Because it's the single large

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TTheapplediscussiontheapplediscussion.hashnode.devAug 25 · 3 min read

When Should You Replace Your Apple Watch Battery? What's Normal After 1 and 2 Years

Most Apple Watch users don't think about battery health until something feels wrong — the watch dying at 4pm, or a notification from Apple saying service is recommended. By then, the decision is alrea

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TTheapplediscussiontheapplediscussion.hashnode.devAug 23 · 2 min read

How to Run an Apple Watch Battery Diagnostic — The Right Way

Battery tests for wearables are almost universally useless. One device, undefined conditions, no controlled variables, one number published as universal truth. Here's how to run an Apple Watch battery

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Ccircuitrockscircuitrocks.hashnode.devAug 23 · 3 min read

This LED Staff Turns a Teensy 4.1 Into a Handheld PoV Display

Spin a row of LEDs fast enough, flash them at exactly the right instant, and your eyes stop seeing dots and start seeing a picture hanging in mid-air. That is persistence of vision, and Corridor Crew'

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RRReetain Rainafreecodecamp.orgAug 21 · 11 min read

How Sensors Collect, Process, and Track Data in Wearable Devices

A smartwatch can tell you that your heart rate is 78 beats per minute, that you've walked 6,421 steps, or that you slept for 7 hours last night. All of these numbers appear simple on the screen, but b

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TTheapplediscussiontheapplediscussion.hashnode.devAug 21 · 3 min read

Apple Watch Band Size Guide — Which Bands Actually Fit Your Model

Apple Watch band sizing is more confusing than it needs to be. Case sizes have changed across every generation, but band compatibility has stayed consistent within two groups — and Apple doesn't expla

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TTheapplediscussiontheapplediscussion.hashnode.devAug 19 · 3 min read

Apple Watch Move Goal vs Calorie Goal — They're Not the Same Thing

Most Apple Watch users treat the Move Goal and calorie goal as interchangeable. They're not. Mixing them up produces goals that are trivially easy, unrealistically hard, or disconnected from actual fi

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TTheapplediscussiontheapplediscussion.hashnode.devAug 17 · 3 min read

Apple Watch Calorie Burn Calculator — How Many Calories Does Your Workout Actually Burn?

Apple Watch gives you a calorie burn figure at the end of every workout. Most users accept that number without understanding what it's calculating or how accurate it actually is. Here's what the algor

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Ccircuitrockscircuitrocks.hashnode.devAug 15 · 2 min read

Motion-Reactive LED Devil Horns Built on an RP2040 Prop Feather

Costume electronics stopped being about one blinking LED a long time ago. The builds worth copying now read what your body is doing and answer back, and Erin St Blaine's motion-reactive devil horns si

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#wearables

Explore Hashnode

Trending tags this week

Raspberry Pi 5 and ESP32-S3 Power an Offline AI Steampunk Helmet

Apple Watch AOD Is Your Biggest Battery Drain — Here's Proof

When Should You Replace Your Apple Watch Battery? What's Normal After 1 and 2 Years

How to Run an Apple Watch Battery Diagnostic — The Right Way

This LED Staff Turns a Teensy 4.1 Into a Handheld PoV Display

How Sensors Collect, Process, and Track Data in Wearable Devices

Apple Watch Band Size Guide — Which Bands Actually Fit Your Model

Apple Watch Move Goal vs Calorie Goal — They're Not the Same Thing

Apple Watch Calorie Burn Calculator — How Many Calories Does Your Workout Actually Burn?

Motion-Reactive LED Devil Horns Built on an RP2040 Prop Feather