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Hi-fi, Radio, and Retro: The DIY Projects Spectrum Readers Love

Cars That Think

And a follow-up to that article, “ A Web-Enabled, High Quality, DIY Audio Amp ” (March 2022), comes in at No. The other four are about exchanging data from distances ranging from a few tens of meters to hundreds of kilometers. Are there trends in DIY projects you think we’re missing? Drop me a line at cass.s@ieee.org

DIY 76
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IoT-ize Your Old Gadgets With a Mechanical Hijacking Device

Cars That Think

It's not hard to turn them on and off with a connected socket adapter of some sort, but as you start to go back more than a few years, things become increasingly designed for direct human interaction rather than for the Internet, with buttons and switches and dials and whatnot. Or, that was the idea, anyway.

DIY 140
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Energy Harvesting for Wearable Technology Steps Up

Cars That Think

Which seems plenty attractive to a range of companies and researchers. There are, researchers have discovered, a wide range of options to harvest enough microwatts to replace wearables’ batteries. Personalized health care could revolutionize traditional medical practice,” Gao says. But solar is just the opening gambit.

Energy 135
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Build Your Own Hi-fi Ear Defenders

Cars That Think

There are industrial solutions that pass through sounds in specific frequency ranges, but these are targeted at speech. For years, I have been trying to improve my personal audio-monitoring situation without going to the expense of the systems used by professional touring bands, which include custom-molded earpieces.

Building 118
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Advantages And Disadvantages Of Electric Cars

DIY Electric Car

Short Driving Range and Speed: Due to limited technological advancement in this area and limited battery life, most of the electric cars can go for about 100 to 150 miles and need to be recharged again. Most of the electric cars available today are 2 seaters and it can get quite uncomfortable if a third person tries to squeeze in.

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Save $1,138 on Hover-1 Altai Pro R500 e-bike, Jackery Explorer 600 Plus $419, EV charger adapter, more

Baua Electric

It’s since been relatively quiet on the front as it spent the rest of last month posted up above $1,900 until today’s deal that gives you $1,138 in savings and drops it down among the start of its lower price ranges – $342 above the all-time low. 3,695) Lectric ONE Long-Range e-bike with $220 in free gear (pre-order): $2,199 (Reg.

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A Smart Artificial Pancreas Could Conquer Diabetes

Cars That Think

Boris now conducts research on bioengineered substitutes for the pancreas; Anna is a writer and a designer. A person who requires insulin must walk a tightrope. If it falls too low, the person may faint; if it rises too high and stays elevated for too long, the person may go into a coma.

Personal 144