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ESP8266 Relay (active low): how to prevent triggering on boot or reset (SOLVED) - ESPHome - Home Assistant Community
electronicslovers.com - Nodemcu Nodemcu Gpio With Arduino Ide | Nodemcu For example, the D0 pin on the NodeMCU Dev kit is mapped to the internal GPIO pin 16 of ESP8266. #technology #electronicslovers #
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arduino - ESP-12 wifi module's the GPIO pin is HIGH on turning it on but should be LOW - Stack Overflow
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