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. But I was in a hurry and simply mounted on the handlebars a Drok meter , which I had purchased for an earlier bicycle-based battery-charging project.

DIY 145

DIY Conversion Cheap Motor 145

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. But I was in a hurry and simply mounted on the handlebars a Drok meter , which I had purchased for an earlier bicycle-based battery-charging project.

DIY 98

DIY Conversion Cheap Motor 98

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.”.

DIY 100

DIY Convert DC Sodium 100

Cars That Think

APRIL 26, 2022

So I read some World War II–era journal articles and learned about the magnetometers used to locate submerged German submarines. commercialized around 2010. It can be purchased. This article appears in the May 2022 print issue as “A DIY Magnetometer.”. It was crude, but it worked. on Amazon for just US $40.

DIY 98

DIY Volt 2001 Building 98