How to use GPIO2,14 & 12 of ESP8266 as input?

• How to use GPIO2,14 & 12 of ESP8266 as input?
  Posted by mrnams on 24 Oct, 2023 17:45
• I have ESP8266 NodeMCU V3 board, I defined GPIO2, GPIO14, GPIO12 as input and set to LOW in setup function, but when I read state of these GPIO they always give HIGH, I read that these are set to HIGH by board after bootup.
  Please not I have used all other GPIO, and they are working, so only these two are available.
  My question is what to do to use these GPIO as input?
• #1 Reply
  Posted by m k on 30 Oct, 2023 20:02
• Input pins are externally defined.
• #2 Reply
  Posted by liaifat85 on 01 Nov, 2023 23:07
• I think you have to use a board with a higher number of GPIO pins.