RP You’re right that GPS is usually more accurate than a speedometer. By law, manufacturers have to make sure that cars’ speedometers don’t underread, and as a result, most of them set ...

The GPS speedometer is the most reliable ... You’ve answered several questions related to car batteries where you’ve mentioned battery testers. What device do you use? A.

It works with iPads that have GPS available, and it has been designed to take full advantage of the Retina display. With a combination of Google Maps and beautifully represented compass, speedometer, ...

You can listen in on a two meter repeater and you can build a GPS module speedometer. That’s what [Jeremy Cook] did with just a few parts, a little 3D design, and some handy zip ties to hold it ...

While GPS works ... this process to a car driving through heavy rain: more raindrops hit the front windshield than the rear. By analyzing this difference, the Spacecraft Speedometer can determine ...