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Custom Firmware For Cheap Bluetooth Thermometers

Custom Firmware For Cheap Bluetooth Thermometers

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The Xiaomi LYWSD03MMC temperature and humidity sensor is ridiculously cheap. If you’re buying a few at a time, you can expect to pay as little as $5 USD a pop for these handy Bluetooth Low Energy environmental sensors. Unfortunately, that...

Bare-Metal STM32: From Power-Up To Hello World

Bare-Metal STM32: From Power-Up To Hello World

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Some may ask why you’d want to program a Cortex-M microcontroller like the STM32 series using nothing but the ARM toolchain and the ST Microelectronics-provided datasheet and reference manual. If your first response to that question wasn’t a panicked dive...

Sorting Thousands Of Drill Bits

Sorting Thousands Of Drill Bits

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[Austin Adee] came into some drill bits. A lot of them actually. But when thousands of assorted sizes are delivered in one disorganized box, are they actually useful? Not unless you’re drilling holes where diameter doesn’t matter. So two projects...

Exploring The New Super Mario Game & Watch

Exploring The New Super Mario Game & Watch

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Nintendo has revived the classic Game & Watch, this time in glorious full-color and running the same Super Mario Bros that first graced the Nintendo Entertainment System (NES) back in 1985. Even though it’s only been on the market for...

Portable Ham Antenna Uses SMD Capacitors

Portable Ham Antenna Uses SMD Capacitors

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[K6ARK] likes to operate portable, so he puts together very lightweight antennas. One of his latest uses tiny toroids and SMD capacitors to form trap elements. You can see  the construction of it in the video below. You usually think...

Magnifying On The Cheap

Magnifying On The Cheap

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If there is one thing we’ve learned during several years of running the Hackaday SMD soldering challenge it is this: Most people need magnification to do good soldering at a tiny scale. The problem is, like most tools, you can...

Hacking The FPGA Control Board From A Bitcoin Miner

Hacking The FPGA Control Board From A Bitcoin Miner

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For anyone serious about mining cryptocurrency such as Bitcoin, we’re well past the point where a standard desktop computer is of much use. While an array of high-end GPUs is still viable for some currencies, the real heavy hitters are...

How To Get Into Cars: Offroading Mods

How To Get Into Cars: Offroading Mods

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While plenty of automotive enthusiasts are all about carving corners at the local track days, it’s a special breed that leaves tarmac behind for the dusty trail ahead. If your chosen ride is of the four-wheelin’ variety, here’s how you...