Cars That Think
FEBRUARY 25, 2022
November 2018 Hands On article, “DIY Pro Audio ” in IEEE Spectrum , and it convinced me it was possible, although I wanted to go beyond just a power amplifier to something more like my lamented Sansui. The remaining components are a collection of power supplies. Trust me: there is no single power supply on eBay that will do this.
Cars That Think
JUNE 22, 2022
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. This article appears in the July 2022 print issue as “DIY Gamma-Ray Spectroscopy.”.
Cars That Think
APRIL 26, 2022
commercialized around 2010. 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. It can be purchased. on Amazon for just US $40.
Cars That Think
AUGUST 20, 2021
Thanks to a few recent technical and commercial developments, I was able to come up with an e-bike conversion that cost me less than US $200 and yet functions impressively. Consider the two e-bikes described in. this month's Gizmo column , which each cost thousands of dollars. The approach I adopted is mechanically as simple as you can get.
Cars That Think
AUGUST 20, 2021
Thanks to a few recent technical and commercial developments, I was able to come up with an e-bike conversion that cost me less than US $200 and yet functions impressively. Consider the two e-bikes described in. this month's Gizmo column , which each cost thousands of dollars. The approach I adopted is mechanically as simple as you can get.
Cars That Think
JULY 27, 2023
The Galaksija is a Z80 -based, 8-bit DIY machine, cleverly designed so that its bill of materials meshed exactly with what a Yugoslavian was able to import from Western Europe. During its brief heyday, thousands were built, leading to commercially assembled Galaksijas finding their way into homes and schools across the country.
Cars That Think
AUGUST 9, 2021
Much has been written about how the Great Global Semiconductor Shortage has affected automakers, game console manufacturers, and other companies making commercial products. As the editor responsible for IEEE Spectrum 's Hands On DIY section , it's taken longer and longer each month to find projects incorporating interesting new capabilities.
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