Cars That Think
MARCH 24, 2022
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 is fast enough to identify wind waves, which typically have a frequency of about 0.2 Hz, and longer swells, which range from about 0.08
Cars That Think
AUGUST 20, 2021
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. Online discussions convinced me, however, that this is the expected behavior when commanding a motor to maintain a fixed amperage in its windings (thus applying constant torque) while under little load.
Cars That Think
AUGUST 20, 2021
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. Online discussions convinced me, however, that this is the expected behavior when commanding a motor to maintain a fixed amperage in its windings (thus applying constant torque) while under little load.
Cars That Think
OCTOBER 25, 2022
Building off the demand stimulated by this activity, a number of manufacturers have started making premium, but still relatively cheap, SDRs. Second, my roof has a line of sight to the Empire State Building, giving me the ability to choose as a reference signal any one of more than half a dozen TV channels transmitted from its spire.
Cars That Think
NOVEMBER 1, 2023
Havmøller Those challenges inspired teams of researchers at the University of Copenhagen , the Technical University of Denmark , and Germany’s Max Planck Institute of Animal Behavior to build a better wearable-size generator for their purposes: tracking wild animals for, ideally, their whole lives.
Cars That Think
APRIL 26, 2022
The notion of being led to a hidden object by virtue of the magnetic anomaly it creates must have really intrigued my 9-year-old self, because a decade after seeing that movie I decided to build a circuit to measure the strength of Earth’s magnetic field. This article appears in the May 2022 print issue as “A DIY Magnetometer.”.
Baua Electric
MARCH 26, 2024
Well, not really cheated, but I just went with a retail solar generator system instead of DIYing that part myself from à la carte components. I used pressure-treated 2x4s to build a pair of mounts for the solar panels, each of which would hold three 200W panels. And the answer is to hopefully give them better wind protection.
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