ESP Basic Series - Ep.3 - PCF8574 Driver - Independent 8 x Switches
Episode 3 from the new "ESP8266 BASIC" Series. This time we will we will write a simple PCF8574 driver for implementing a nice interactive Web interface for a 8 x Independent Switches unit that can be used to drive upto 8 Relays or anything else you might need.
Related article: http://www.esp8266-projects.com/2016/...