13+ Nodemcu Pin Diagram. Google image search (image is used for while writing gpio code on nodemcu, you can't address them with actual gpio pin numbers. But it is important to explain that the nodemcu is formed by an esp12e, which still has an esp8266ex… today, we will talk about esp8266 pinning, or in other words, nodemcu.
Not all gpios are exposed in all esp8266. Nodemcu is a very easy to use esp8266 board that can be bought at ebay for less that 4 euros. Follow the tutorial for connecting the nodemcu module.
A cheat sheet to remember the pinout of the esp8266 nodemcu v2 and v3 boards for your arduino ide for practical purposes esp8266 nodemcu v2 and v3 boards present identical pinouts.
13+ Nodemcu Pin Diagram. Gpio pins esp8266 nodemcu has 17 gpio pins which can be assigned to various functions such as i2c, i2s, uart, pwm, ir remote control, led light and button programmatically. If it is low at power on state this will put. Not all gpios are exposed in all esp8266. Follow the tutorial for connecting the nodemcu module.