Image gallery for: Github khoih prog esp8266timerinterrupt this library enables you to use interrupt from hardware timers on an esp8266 based board it now supports 16 isr based timers while consuming only 1 hardware timer timers interval is very long ulong millisecs the most important feature is they re isr based timers therefore their executions are not blocked by bad behaving functions or tasks this important feature is absolutely necessary for mission critical tasks