Commercial DIY Powered Volt 
Cars That Think
MARCH 24, 2022
Unfortunately, the cost of buying instruments commercially severely limited how many trackers we could deploy. 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. microwatts.
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. I next needed to decide on an electronic speed controller (ESC) to power the motor. Consider the two e-bikes described in. James Provost.
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. I next needed to decide on an electronic speed controller (ESC) to power the motor. Consider the two e-bikes described in. James Provost.
Cars That Think
NOVEMBER 1, 2023
Fortunately, though, at wearables’ modest power budgets, energy is effectively everywhere. But we do actually need that energy to be generated,” says Alper Bozkurt, who with Veena Misra codirects the Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST) at North Carolina State University. milliwatts.
Cars That Think
JUNE 22, 2022
Not only does the RP2040 have lots of compute power, it hasn’t suffered the kind of shortages afflicting other chips. I started thinking about creating my own gamma-ray spectrometer when I saw the high price of even the cheapest commercially made devices. I wanted to see if I could make it easy and affordable to build a spectrometer.
Cars That Think
FEBRUARY 25, 2022
These audio amplifiers combine a preamplifier for boosting the sound signal and a power amplifier for driving the loudspeakers. 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.
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. Power comes from an external USB battery.
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