Out of curiosity, what's the other meaning? I assume the primary one has to do with baseball bases.
A couple 5.1k resistors add about $0.00001 to the BOM cost. The terrible mistake is on the designers of devices who try to forego these.
Out of curiosity, my rudimentary measurement puts bandwidth usage at about 17 KiB/s. Some might say that's negligible nowadays, which is not that unreasonable (1 hour ~ 61 MiB). Still, my efficiency brain is tingling. I guess simply displaying chars is lower risk than running code on your computer.
There is an SVG option that looks identical but it doesn't say when you're supposed to use that, or why canvas exists (and is the default) if SVG would work equally well. Then again, setting an example chart to use SVG rendering (I was looking at the basic scatter plot functionality, since I use that most often), I can't seem to tab or otherwise navigate through the data points, so it may just be impossible to get the data read out to you like "first data point, year 2006 students 25 939" (if the axes were labeled "year" and "students", for example; they're not labeled in the example but it could still read out the positions of the points)
Did you know that instead of buying new motor controllers, you can re-use the hoverboard motor controller? Awesome people have made open source firmware you can flash to it: https://github.com/EFeru/hoverboard-firmware-hack-FOC. With this firmware you can make the motors go way faster, up to 40km/h with a 12S battery.
We are also building a kart with hoverboard motors, with a custom welded steel frame. Vibrations are a real issue with the standard solid rubber wheels, hopefully I can find the same air tires you used!
Our website is in Dutch, but you can watch the videos: https://projects.raphson.nl/projects/kart/