A very simple implementation of the basic of the IRC protocol on a NodeMCU ESP8266. When a user in the selected channel writes ".on" the led connected to the NodeMCU will power on!
R1 is a Resistor to protect the Led
LED is a led, ofc (in my case it's blue!)
R1 LED
+---/\/\/\/\---(/)---+
____|____________________|_______________________________
| D0 D1 D2 D3 D4 3V GND D5 D6 D7 D8 Rx Tx GND 3V |
| _|_
| |___| USB
| A0 RSV RSV SD3 SD2 SD2 CMD SD0 CLK GND 3V EN RST GND Vin |
|__________________________________________________________|