Using Blynk

Blynk (http://www.blynk.cc) allows you to control Arduino, ESP8266, ESP-12, NodeMCU, Particle Photon, Raspberry Pi, and other microcomputers with the Android or iOS installed smartphone over the internet. It also supports bluetooth and bluetooth low energy connectivity:

1. Download the Blynk app for Android (https://play.google.com/store/apps/details?id=cc.blynk) or iOS (https://itunes.apple.com/us/app/blynk-control-arduino-raspberry/id808760481?ls=1&mt=8) on your smartphone.
2. After downloading the Blynk app, you'll need to create a new Blynk account by tapping on Create New Account. Alternatively, you can log in to the Blynk app with your Facebook account by tapping on Log In with Facebook (Figure 2.20).

Make sure to provide a real email address or your Blynk account to get the Auth Token by email.

Figure 2.20: Creating a new account for the Blynk...