OK, the last new watch feature (at least for now) is GPS speed. I have to say up front - there is no track history yet
. But, there are a few things that might be interesting to everyone.
As usual, you can enable GPS in Woo Screen Settings (it is off by default). I couldn't fit everything that is useful between jumps and speed on one watch screen, so when GPS is enabled, there is one more screen that looks like this:
- gps.png (45.17 KiB) Viewed 1746 times
Coming from the top to the bottom:
- On top is the current time. The red background is there to quickly visually differentiate between jump and speed screens - they look very similar otherwise.
- In the middle is the current speed and units - km/h for metric or mph otherwise.
- The next one is the interesting one. I don't know if anyone else uses it, but that is my own invention
. It shows max speed during the last 60 seconds. Here is what it is for. When I do speed runs, they are usually under one minute long. During the run, I can't look at the watch. After the run, the only thing left is session's top speed, so if I didn't beat it, I wouldn't know how fast I was going. Hence, "60 SEC MAX" field. It will also most likely show your take off speed before the jump - chances are that will be the fastest point you can see after you land
- To the right from it, there is the session's top speed.
- At the bottom, there is the total session distance covered.
When GPS is enabled, the Speed screen becomes a main screen. It switches to the jump screen automatically whenever any of the following occurs:
- Jump data received and displayed
- Woo connection state changes
Jump screen is displayed for 20 seconds and then switches back to Speed screen. You can also always manually switch between screens (remember Rotation gesture
?). 20 seconds on Jump screen applies to manual switching as well. 2 other screens still toggle back in 5 seconds.
Last thing to mention is the method to calculate speed. Right now I just use current speed provided by GPS. I also tried calculating it from last 10 seconds and last 10 sec in a straight line. Testing it on the water, there is not much difference between them. Sometimes GPS even does it better - way points can jump around on bad signal. I had 65km/h displayed sitting at home when I calculated speed myself based on distance / time. I'm open to suggestions though.
Distance is affected by bad GPS signal as well. Until it gets a good reception, you can see the distance increasing (from location jumping around) while you are standing. Usually it goes away when the signal gets better.
That is it for now
. Thanks!