Arduino GND to breadboard negative power rail Arduino 5v to breadboard positive power rail DHT11 positive pin to breadboard positive power rail DHT11 negative pin to breadboard negative power rail DHT11 S pin to Arduino Analog A0 // this feeds data from DHT11 to Arduino LCD 1 to breadboard negative power rail LCD 2 to breadboard positive power rail LCD 3 to potentiometer centre pin // this helps to change the LCD brightness LCD 4 to Arduino Digital Pin 12 // Arduino sends LCD data (LCD character coordinates) LCD 5 to breadboard negative power rail LCD 6 to Arduino Digital Pin 11 // Arduino sends LCD data (LCD initiate command) LCD 11 to Arduino Digital Pin 5 // Arduino sends LCD data LCD 12 to Arduino Digital Pin 4 // Arduino sends LCD data LCD 13 to Arduino Digital Pin 3 // Arduino sends LCD data LCD 14 to Arduino Digital Pin 2 // Arduino sends LCD data LCD 15 to 220 ohm resistor and then the same 220 ohm resistor to breadboard positive power rail LCD 16 to breadboard negative power rail Potentiometer positive pin to breadboard positive power rail Potentiometer negative pin to breadboard negative power rail
Photo of final build: