This circuit is designed to interface various sensors and modules with an Arduino UNO microcontroller. It includes a BMP180 barometric pressure sensor, an ESP-01 WiFi module, a photocell (LDR), a DHT03 humidity and temperature sensor, an MQ-4 methane gas sensor, and an LCD screen with I2C communication. The circuit is powered by an MB102 Breadboard Power Supply Module that provides both 3.3V and 5V outputs. A resistor is used in conjunction with the photocell to create a voltage divider for light intensity measurement. The Arduino UNO serves as the central processing unit, reading sensor data, and potentially sending data to the ESP-01 for WiFi communication.
5V
connected to the 5V power railGND
connected to the ground railA0
connected to the DHT03 data signalA1
connected to one side of the photocell and to one side of the 10k resistor (forming a voltage divider)A2
connected to the MQ-4 analog outputA4
(SDA) connected to the I2C data lineA5
(SCL) connected to the I2C clock lineD10
connected to the ESP-01 TXD11
connected to the ESP-01 RX+3V3
connected to the 3.3V power railGND
connected to the ground railSCL
connected to the I2C clock lineSDA
connected to the I2C data lineVCC
and CH_PD
connected to the 3.3V power railGND
connected to the ground railRX
connected to Arduino UNO D11TX
connected to Arduino UNO D103.3V
output connected to the 3.3V power rail5v
output connected to the 5V power railGND
connected to the ground railVCC
connected to the 5V power railGND
connected to the ground railSCL
connected to the I2C clock lineSDA
connected to the I2C data lineVcc
connected to the 5V power railData-signal
connected to Arduino UNO A0GND 1
connected to the ground railVCC
connected to the 5V power railGND
connected to the ground railA0
connected to Arduino UNO A2void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}
No additional code documentation provided.