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A DIY Tracker Tough Enough for the Arctic

Cars That Think

So, I set about building an open-source ice tracker from DIY components that not only proved to be much, much cheaper but also much more capable than the commercial options. This consumed around 350 milliamperes while running at 5 volts for about 1.7 watts, but the Apollo3 uses just 500 microamperes at 3.3 microwatts.

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A DIY E-bike Conversion on the Cheap

Cars That Think

Here I took advantage of already owning an electric lawnmower, figuring that the 40-volt, 4-ampere-hour battery I had for it would serve well. Being an open-source design no doubt keeps the price of this hardware down: The controller I bought set me back a mere $85. The third essential element of any e-bike is, of course, the battery.

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A DIY E-bike Conversion on the Cheap

Cars That Think

Here I took advantage of already owning an electric lawnmower, figuring that the 40-volt, 4-ampere-hour battery I had for it would serve well. Being an open-source design no doubt keeps the price of this hardware down: The controller I bought set me back a mere $85. The third essential element of any e-bike is, of course, the battery.

DIY 98
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Energy Harvesting for Wearable Technology Steps Up

Cars That Think

volts for about 60 hours. The team was inspired by self-winding watches , which have existed since the late 18th century and transform wrist movement into energy. In the future, DIY may not even be necessary. The team tested their devices with three species: four domestic dogs, an Exmoor pony, and a European bison.

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Search for Buried Treasure With This DIY Magnetometer

Cars That Think

But feeding it to a second op amp configured as a simple comparator (one that compares the input with zero volts) squared the signal up nicely, with the output switching between the +12-volt and –12-volt supply rails every 3 milliseconds or so. This article appears in the May 2022 print issue as “A DIY Magnetometer.”.

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Car Companies Standardize Plug for Electric Vehicles : Gas 2.0

Tony Karrer Delicious EVdriven

The three-point, 400-volt plug, which will allow electric cars to be recharged anywhere in a matter of minutes , will be unveiled Monday at the world’s biggest industrial technology fair in Hanover, northern Germany. Sign Up for the Green Options Newsletter Follow us on Twitter Subscribe via email Resources Write for Gas 2.0

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MIT Battery Breakthrough Could Revolutionize Electric Cars : Gas 2.0

Tony Karrer Delicious EVdriven

ultra You might also like: Car Companies Standardize Plug for Electric Vehicles 9 Electric Cars 100 Years Old or More The Chinese BYD F3DM, First Mass Produced Electric Car, Fails with Consumers GM Ditches Volt for Geo Metro Hybrid? What I do need is an affordable alternative to Lead Acid. other better transmission systems will be a lark!

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