IPhone 6 Barometer

iphone 6
All within 0.1 mbar which is pretty good. The iPhone 6 barometer's sensor is the new BMP 280 made by Bosch according to Apple. It has an operation range of 300 to 1100 mbars. It determines altitude by GPS and correctly found my home altitude of 14 feet. I've check it daily for a week and It is within 0.1 mbar of my Kestrel. At the Tallahasseee NWSO it had trouble with the altitude because I was inside and couldn't get a GPS fix.

Outside for what I do - measure the pressure inside the eye of a typhoon or hurricane it would work just fine I believe. Look for more iPhone 6 apps to come out down the road that have data logging and graphics. So the difference when you account for altitude - in this case 173 feet - is 0.3 milli bar.

Not bad at all. The Kestrel is calibrated at the factory to a known standard and in the field you would input the altitude offset. With an accurate barometer in the iPhone 6 it will be a useful tool for getting a cross section of pressures in hurricanes and typhoons. The acid test would be to take all three barometers in a pressure chamber and compare values from say 900 mbar and up every 20mbar then you could plot a calibration curve and compare. 11-17-2014 update: I've found a better barometer called "barometer for iPhone 6" on the app store.

You can manually input the altitude or use the automatically derived GPS value. It looks more like a traditional barometer and has a set button to tag the current reading - just like a regular old time barometer. The numbers don't jump around either if you use a known altitude setting. Only goes down to 960 mbar but I'll bet the digital display goes down lower.

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While developing iOS apps, programmers have to focus on different models of iPhone, iPad and iPod touch to deliver richer user experience across multiple iOS devices. Despite running on the same version of iOS, the screen size, features and functionality of individual devices differ. So the new models of these varied devices unveiled by Apple recently at an event in San Francisco will have a huge impact on iOS app development.

Based on the information released by Apple, the developers can easily identify the noteworthy features of iPhone 6s, iPhone 6s Plus, and iPad Pro. The new iPhone models are designed for regular users, whereas iPad Pro is designed by targeting professionals and enterprise users. The developers need to take advantage of specific features of the various Apple devices to make the new iOS apps deliver better and richer user experience, and get higher returns.

Phone 6s will have a 4.7 inch screen, whereas 6s Plus version will have a 5.5 inch screen size. As the screen sizes of new models are similar to that of the already available 6 and 6 Plus, the screen sizes of the new models will not have a significant impact on the app development front. But the 3D technology introduced by Apple will completely transform mobile app development.

The feature borrowed from Apple Watch enables users to apply different levels of pressure on the device's touch screen. For instance, the users can now simply press hard on the Maps app, and see shortcuts to related options like Directions Home and Mark My Locations. Likewise, the 3D touch feature enables users to pulls up a quick view of the content of an email simply by hard clicking on an unread email in the inbox. The quick view will enable users to read its content, without marking the email as read.

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