smoke-alarm
There are 2 repositories under smoke-alarm topic.
khoih-prog/SmallProjects
ISR-based projects demonstrate how to use ESP8266TimerInterrupt, ESP32TimerInterrupt and TimerInterrupt Library
rkhanso/ESP8266_SmokeAlarm_HomeAssistant
Turn a cheap, dumb smoke alarm into a somewhat smart version. Connect an ESP8266 to it so you can use smoke alarms in Home Assistant automations.