This circuit involves an Arduino UNO microcontroller interfacing with a 16x2 I2C LCD, a DHT 11 temperature and humidity sensor, a 12V single-channel relay, and a DC motor. The circuit is powered through a 2.1mm barrel jack with a terminal block. The Arduino UNO controls the relay, which in turn controls the DC motor. The DHT 11 sensor provides temperature and humidity data, which is displayed on the 16x2 I2C LCD.
Arduino UNO
DC Motor
DHT 11
16x2 I2C LCD
2.1mm Barrel Jack with Terminal Block
12V SINGLE CHANNEL RELAY
GND connected to:
5V connected to:
A4 connected to:
A5 connected to:
D3 connected to:
D2 connected to:
pin 1 connected to:
pin 2 connected to:
GND connected to:
VCC connected to:
IN connected to:
NO connected to:
COM connected to:
GND connected to:
VCC connected to:
SDA connected to:
SCL connected to:
GND connected to:
VCC connected to:
DATA connected to:
void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}