How do i increase gps speed refresh rate with “interpolated” speed?

[J-M-L]

@djscoutmaster

How do i know when i have a “stale” speed reading and should start my 10hz “estimated” speed if tiny gps always returns a speed when i call it? Should i just wait for the first gps speed number change and then just start a counter based on millis() ?

You can call if (gps.speed.isValid() ) {…}

@anon57585045

Given some velocity and inertia, you can approximate future velocity because it is an integral. But to improve on the accuracy of the last reading, you would need to know the forces of acceleration that are at work.

It’s just a guess based on the previous 1s interval acceleration (the delta in speed over one second) of course you can’t predict when the driver will stop that current behavior (accelerating or slowing down).