The AAduino is an wireless Arduino clone the size of an AA battery with Keystone battery terminals rotated 180° to act as positive and negative terminals. It is meant to go inside a 3xAA battery holder creating a very small wireless node.
Raspberry Pi CEO Eben Upton says Pi 3 is up to 60 percent faster than the Pi 2, warns of possible shortages
Press and hold your phone’s power button for a few seconds until Android prompts you to turn off your phone—just as you would normally do to power it down. Next, tap and hold Power off for a few seconds until your phone asks you to confirm that you want to enter safe mode. Tap OK, and your phone will restart into safe mode.
Once you’re done with safe mode, go ahead and power down your phone as you normally would by pressing and holding the power button, then turn it back on.