ESP8266/NodeMCU Deep Sleep
dsleep() function accepts microseconds as its parameter (1,000,000 microseconds = 1 second), and the multiplication performed inline here is just to make it clearer that we’re sleeping for 15 minutes total. With the current 1.5.1 SDK, the maximum value accepted is 4,294,967,295, which is about 71 minutes. Earlier SDK versions had a lower limit, closer to […]