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 consumed around 350 milliamperes while running at 5 volts for about 1.7 watts, but the Apollo3 uses just 500 microamperes at 3.3 microwatts.
Cars That Think
AUGUST 20, 2021
E-bike availability and ridership have exploded. Most components are inexpensive and readily available. Here I took advantage of already owning an electric lawnmower, figuring that the 40-volt, 4-ampere-hour battery I had for it would serve well. Fast forward a dozen years. James Provost.
Cars That Think
AUGUST 20, 2021
E-bike availability and ridership have exploded. Most components are inexpensive and readily available. Here I took advantage of already owning an electric lawnmower, figuring that the 40-volt, 4-ampere-hour battery I had for it would serve well. Fast forward a dozen years. James Provost.
Cars That Think
SEPTEMBER 27, 2023
Searching the interwebs, I found no shortage of leads about how to build a DIY seismometer. The problem is that the DIY seismometer designs I was seeing were large and ungainly contraptions. The lowest-frequency models generally available are for 4.5 I recently decided that I needed to give this a try.
Cars That Think
APRIL 26, 2022
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. But all that wasn’t available in the 1940s.
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. A link to the Web app, along with full build details and PCB files, is available on GitHub.).
Electric Vehicless
SEPTEMBER 6, 2020
In electric bike conversion kit there are a number of small parts available, but we consider only three major parts ( Motor, Battery, Controller) & costly parts of kit in detail. Motors rating available as 350W 36V, 1000W 48V, 250W 24V, 250W 36V etc. Battery capacity Watt-hours = Amp -hrs X Volts . Wire harness.
Expert insights. Personalized for you.
93 
Let's personalize your content