Best way to programming ESP8266 ESP-12
//Good pins nodeMCU //GPIO16 > D0 *HIGH on boot. then ~1V //GPIO5 > D1 #GOOD for sensors //GPIO4 > D2 (PWM) #GOOD //GPIO0 > D3 *Boot failure in pulled low! //GPIO2 > D4 *Boot failure in pulled low! *HIGH on boot, built-in led //GPIO14 > D5 (PWM) #GOOD *100ms high then low //GPIO12 > D6 (PWM) #GOOD *100ms high then low //GPIO13 > D7 #GOOD *HIGH on boot OR *100ms high then low //GPIO15 > D8 (PWM) *boot failuer in pulled HIGHT!