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A DIY E-bike Conversion on the Cheap

Cars That Think

At the time, e-bikes were still rather exotic, at least in the United States, so it seemed worth the expense and effort to build my own. Terrafirma Technology , a company started by an engineer named Michael House who has gone into business supplying 3D-printed adapters to people who want to repurpose lithium-ion power-tool batteries.

DIY 145
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Building the Future of Smart Home Security

Cars That Think

It’s nearly impossible to find a household today that doesn’t have at least one connected smart home device installed. It redefined the home security space by introducing wireless, DIY products and pioneered giving customers the ability to monitor their homes via a smartphone app. The potential solution?

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A DIY Calorie Counter More Accurate Than a Smartphone

Cars That Think

The answer is yes—and it's one you can build yourself with parts any maker can easily obtain. The road to the calorie counter began in our lab (the Human Performance Laboratory in the Stanford University School of Engineering ), where we study things like the metabolic cost of walking.

DIY 99
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A DIY E-bike Conversion on the Cheap

Cars That Think

At the time, e-bikes were still rather exotic, at least in the United States, so it seemed worth the expense and effort to build my own. Terrafirma Technology , a company started by an engineer named Michael House who has gone into business supplying 3D-printed adapters to people who want to repurpose lithium-ion power-tool batteries.

DIY 98
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Can This DIY Rocket Program Send an Astronaut to Space?

Cars That Think

meter-tall Nexø II rocket was powered by a bipropellant engine designed and constructed by the Copenhagen Suborbitals team. The engine mixed ethanol and liquid oxygen together to produce a thrust of 5 kilonewtons, and the rocket soared to a height of 6,500 meters. We're now building the. generous donors around the world.

DIY 135
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iRobot Launches Create 3, with ROS 2 Built In

Cars That Think

It’s a little scary to recall that when iRobot last released an update to the Create DIY/educational robot platform, the calendar read 2014 (!). For more details on the Create 3, we spoke with Charlotte Redman, iRobot's product manager, and Steven Shamlian, principal electrical engineer. I think there are two reasons.

Charlotte 145
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Where the President-Elect Candidates Stand on Key Issues

Cars That Think

The candidates were asked about their plans for increasing diversity, equity, and inclusion at IEEE; expanding science, technology, engineering, and math education programs; and ways to attract and retain members. In the First Robotics competitions, student teams design, program, and build robots.