Circuit Documentation

Summary

This circuit is designed to monitor soil moisture and water levels, and control a water pump based on the sensor readings. The system uses an Arduino UNO and an ESP8266 NodeMCU for processing and communication. The soil moisture is measured using a YL-69 Sonda connected to a Soil Moisture Module, while the water level is monitored using a Water Level Sensor. The power supply is managed by a 12V 5A power supply and a voltage regulator. The water pump is controlled via an NPN transistor and a rectifier diode.

Component List

YL-69 Sonda

• Description: Soil moisture sensor probe
• Pins: +, -

Soil Moisture Module

• Description: Module to interface with the YL-69 Sonda
• Pins: positive, negative, Analog, Digital, Ground, VCC

POWER SUPPLY 12V 5AMP

• Description: Power supply unit providing 12V DC output
• Pins: 220V Positive Pole (AC), 220V Negative Pole (AC), GND, GND (DC), 12V-24V Output (DC)

power 220v

• Description: 220V AC power source
• Pins: hot wire, neutral wire

V_REG_MIC2920

• Description: Voltage regulator
• Pins: IN, GND, OUT

Water Level Sensor

• Description: Sensor to measure water level
• Pins: SIG, VCC, GND

water pump

• Description: Pump to control water flow
• Pins: positive, negative

1N4007 Rectifier Diode

• Description: Diode for rectification
• Pins: Cathode, Anode

NPN-Transistor

• Description: Transistor for switching
• Pins: E, C, B

Resistor (1 Ohm)

• Description: Resistor with 1 Ohm resistance
• Pins: pin1, pin2

Resistor (1000 Ohms)

• Description: Resistor with 1000 Ohms resistance
• Pins: pin1, pin2

NPK Soil Sensor

• Description: Sensor to measure NPK levels in soil
• Pins: 12V DC, A, B, GND

Arduino UNO

• Description: Microcontroller board
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

esp8266 nodemcu

• Description: Wi-Fi module
• Pins: D0, D1, D2, D3, D4, 3V3, GND, D5, D6, D7, D8, RX, TX, A0, RSV, SD3, SD2, SD1, CMD, SD0, CLK, EN, RST, VIN

Wiring Details

YL-69 Sonda

• + connected to positive of Soil Moisture Module
• - connected to negative of Soil Moisture Module

Soil Moisture Module

• positive connected to + of YL-69 Sonda
• negative connected to - of YL-69 Sonda
• Analog connected to A0 of Arduino UNO
• Ground connected to GND of Arduino UNO
• VCC connected to 5V of Arduino UNO

POWER SUPPLY 12V 5AMP

• 220V Positive Pole (AC) connected to neutral wire of power 220v
• 220V Negative Pole (AC) connected to hot wire of power 220v
• GND (DC) connected to GND of V_REG_MIC2920
• 12V-24V Output (DC) connected to IN of V_REG_MIC2920 and Cathode of 1N4007 Rectifier Diode and positive of water pump

power 220v

• neutral wire connected to 220V Positive Pole (AC) of POWER SUPPLY 12V 5AMP
• hot wire connected to 220V Negative Pole (AC) of POWER SUPPLY 12V 5AMP

V_REG_MIC2920

• GND connected to GND (DC) of POWER SUPPLY 12V 5AMP
• IN connected to 12V-24V Output (DC) of POWER SUPPLY 12V 5AMP
• OUT not connected in the provided net list

Water Level Sensor

• SIG connected to A1 of Arduino UNO
• VCC connected to 3V3 of esp8266 nodemcu
• GND connected to GND of Arduino UNO

water pump

• positive connected to 12V-24V Output (DC) of POWER SUPPLY 12V 5AMP
• negative connected to Anode of 1N4007 Rectifier Diode and C of NPN-Transistor

1N4007 Rectifier Diode

• Cathode connected to 12V-24V Output (DC) of POWER SUPPLY 12V 5AMP
• Anode connected to negative of water pump and C of NPN-Transistor

NPN-Transistor

• E not connected in the provided net list
• C connected to Anode of 1N4007 Rectifier Diode and negative of water pump
• B connected to pin1 of Resistor (1 Ohm)

Resistor (1 Ohm)

• pin1 connected to B of NPN-Transistor
• pin2 not connected in the provided net list

Resistor (1000 Ohms)

• pin1 not connected in the provided net list
• pin2 not connected in the provided net list

NPK Soil Sensor

• 12V DC not connected in the provided net list
• A not connected in the provided net list
• B not connected in the provided net list
• GND not connected in the provided net list

Arduino UNO

• A0 connected to Analog of Soil Moisture Module
• A1 connected to SIG of Water Level Sensor
• GND connected to Ground of Soil Moisture Module and GND of Water Level Sensor
• 5V connected to VCC of Soil Moisture Module
• D1 connected to RX of esp8266 nodemcu
• D0 connected to TX of esp8266 nodemcu

esp8266 nodemcu

• 3V3 connected to VCC of Water Level Sensor
• RX connected to D1 of Arduino UNO
• TX connected to D0 of Arduino UNO

Documented Code

Arduino UNO Code

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

esp8266 nodemcu Code

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

This documentation provides a comprehensive overview of the circuit, including a detailed component list, wiring details, and the code used in the microcontrollers.