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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. In 2009, I wrote in these pages about my efforts to. add an electric motor to a bicycle —a project that involved a considerable outlay of money and many hours in a machine shop behind a lathe.

DIY 145
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Can This DIY Rocket Program Send an Astronaut to Space?

Cars That Think

That successful mission in August 2018 was a huge step toward our goal of sending an amateur astronaut to the edge of space aboard one of our DIY rockets. We're now building the. We'll soon commence building a full-scale BPM100 engine, which will ultimately incorporate a new guidance system for the rocket. Carsten Olsen.

DIY 144
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DIY Gamma-Ray Spectroscopy with a Raspberry Pi Pico

Cars That Think

So when I decided to build a cheap DIY scintillating gamma spectrometer, it was the natural choice—although I didn’t realize I’d find myself navigating around teething problems of the sort that often affect a first-generation integrated circuit. I wanted to see if I could make it easy and affordable to build a spectrometer.

DIY 106
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Hi-fi, Radio, and Retro: The DIY Projects Spectrum Readers Love

Cars That Think

Far and away our most popular article in the last five years has been “ Build Your Own Professional-Grade Audio Amp on the Sort of Cheap ” (November 2018). And a follow-up to that article, “ A Web-Enabled, High Quality, DIY Audio Amp ” (March 2022), comes in at No. Are there trends in DIY projects you think we’re missing?

DIY 98
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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. In 2009, I wrote in these pages about my efforts to. add an electric motor to a bicycle —a project that involved a considerable outlay of money and many hours in a machine shop behind a lathe.

DIY 98
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This Huge DIY Workbench Gives You a Hand

Cars That Think

So I decided to build a new workbench. I decided on building a 213-by-107-cm bench. I added a DIY solder squid—a block with four flexible arms that I use to hold components in place while soldering—with a concrete base and an automatic solder fume extractor. A bench that could automatically assist me in getting things done!

DIY 116
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Build Your Own Hi-fi Ear Defenders

Cars That Think

Now, after countless versions of wiring things together, and even designing my own audio mixers, I finally have a DIY solution that works within a reasonable budget. I was on the hunt for another cheap small MEMS mic that could handle louder sound sources. I found the Vesper VM2020 , with an impressive AOP of 149 dB!

Building 142