sensorsChecker.js

Mostly all recent browsers expose an api for deviceorientation and devicemotion events.

• That doesn't mean the device you're on has sensors (accelerometer+gyroscope) to feed them.
• So, to check if the device has sensors, you can't rely on simple feature detection like "ondeviceorientation" in window or "ondevicemotion" in window
• This module will let you check if there is really an accelerometer+gyroscope to rely on.

//check the sensors for the deviceorientation api
sensorsChecker.checkDeviceorientation(function(){
		console.log('sensors detected');
	},function(){
		console.error('no sensor detected');
	}
);
//check the sensors for the devicemotion api (this time with some options)
sensorsChecker.checkDevicemotion(function(){
		console.log('sensors detected');
	},function(){
		console.error('no sensor detected');
	},{
		userAgentCheck: /(iPad|iPhone|Nexus|Mobile|Tablet)/i,//@optional (to bypass the sniffing)
		delay: 600//@optional default delay : 500ms
	}
);

Used in :

• https://github.com/topheman/PanoramaSensorsViewer
• http://streetview.topheman.com
• https://github.com/topheman/bombs
• https://github.com/topheman/playground2 (finally, no need for, according to the UX)

Now available on npm: npm install sensors-checker --save