Circuit Documentation

Summary

This circuit integrates an Arduino UNO microcontroller with various sensors and an ESP8266 NodeMCU for wireless communication. The sensors include vibration sensors, a humidity and temperature sensor, and soil moisture sensors. The circuit is powered by a combination of 5V and 3.3V batteries.

Component List

1. Arduino UNO

   • Description: A microcontroller board based on the ATmega328P.
   • 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

2. SW-420 Vibration Sensor

   • Description: A sensor module used to detect vibrations.
   • Pins: vcc, Ground, Digital output

3. DHT11 Humidity and Temperature Sensor

   • Description: A sensor module used to measure humidity and temperature.
   • Pins: VDD, DATA, NULL, GND

4. Soil Moisture Interceptor

   • Description: A sensor module used to measure soil moisture levels.
   • Pins: AO, DO, GND, VCC

5. SparkFun Soil Moisture Sensor

   • Description: A sensor module used to measure soil moisture levels.
   • Pins: VCC, GND, SIG

6. 5V Battery

   • Description: A power source providing 5V.
   • Pins: positive, negative

7. 3.3V Battery

   • Description: A power source providing 3.3V.
   • Pins: +, -

8. ESP8266 NodeMCU

   • Description: A low-cost Wi-Fi microchip with full TCP/IP stack and microcontroller capability.
   • 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

Arduino UNO

• 3.3V connected to ESP8266 NodeMCU 3V3
• 5V connected to:
  • DHT11 Humidity and Temperature Sensor VDD
  • Soil Moisture Interceptor VCC
  • SW-420 Vibration Sensor vcc (both sensors)
  • 5V Battery positive
• GND connected to:
  • Soil Moisture Interceptor GND
  • 5V Battery negative
  • ESP8266 NodeMCU GND
  • SW-420 Vibration Sensor Ground (both sensors)
  • DHT11 Humidity and Temperature Sensor GND
• A0 connected to SW-420 Vibration Sensor Digital output
• A1 connected to Soil Moisture Interceptor AO
• D3 connected to SW-420 Vibration Sensor Digital output
• D2 connected to DHT11 Humidity and Temperature Sensor DATA
• D1 connected to ESP8266 NodeMCU RX
• D0 connected to ESP8266 NodeMCU TX

SW-420 Vibration Sensor

• vcc connected to Arduino UNO 5V
• Ground connected to Arduino UNO GND
• Digital output connected to Arduino UNO A0 and D3

DHT11 Humidity and Temperature Sensor

• VDD connected to Arduino UNO 5V
• DATA connected to Arduino UNO D2
• GND connected to Arduino UNO GND

Soil Moisture Interceptor

• AO connected to Arduino UNO A1
• DO not connected
• GND connected to Arduino UNO GND
• VCC connected to Arduino UNO 5V

SparkFun Soil Moisture Sensor

• VCC connected to Soil Moisture Interceptor VCC
• GND connected to Soil Moisture Interceptor GND
• SIG not connected

5V Battery

• positive connected to Arduino UNO 5V
• negative connected to Arduino UNO GND

3.3V Battery

• + connected to ESP8266 NodeMCU 3V3
• - connected to ESP8266 NodeMCU GND

ESP8266 NodeMCU

• 3V3 connected to Arduino UNO 3.3V and 3.3V Battery +
• GND connected to Arduino UNO GND and 3.3V Battery -
• RX connected to Arduino UNO D1
• TX connected to Arduino UNO D0

Documented Code

Arduino UNO Code (sketch.ino)

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

}

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

}

Documentation (documentation.txt)

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