Sparkfun has created a board specifically for use with the Blynk IoT app builder, aptly named the Sparkfun Blynk Board. Based on the ESP8266, this board can connect to both open and protected Wi-Fi to connect with a Blynk mobile app. Using a GUI drag and drop editor to create an app , you can control the Blynk board via the GPIOs and receive sensor data from the single ADC or the onboard temperature and humidity sensor. This can be powered either via a micro USB port or a lithium polymer battery using a standard JST connector, providing the flexibility to choose between a static and mobile application. [ Ссылка ]
