Circuit Documentation

Summary

This circuit integrates an Arduino UNO, an ESP8266 NodeMCU, a SW-420 Vibration Sensor, an IR Sensor, a Solar Panel, a Solar Charge Controller, a Bi-Directional Logic Level Converter, and a green LED. The circuit is designed to monitor vibrations and infrared signals, and it is powered by a solar panel with a charge controller. The ESP8266 NodeMCU is used for wireless communication, and the Arduino UNO serves as the main microcontroller.

Component List

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

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

SW-420 Vibration Sensor

• Description: A vibration sensor module that detects vibrations and outputs a digital signal.
• Pins: vcc, Ground, Digital output

IR Sensor

• Description: An infrared sensor module that detects objects and outputs a digital signal.
• Pins: out, gnd, vcc

Solar Panel

• Description: A device that converts sunlight into electrical energy.
• Pins: gnd, vcc

Solar Charge Controller

• Description: A device that regulates the voltage and current coming from the solar panels to the battery.
• Pins: Solar Cell +, Solar Cell -, Battery +, Battery -, Load +, Load -

Bi-Directional Logic Level Converter

• Description: A module that safely steps down 5V signals to 3.3V and steps up 3.3V to 5V.
• Pins: HV1, HV2, HV, GND, HV3, HV4, LV1, LV2, LV, LV3, LV4

LED: Two Pin (green)

• Description: A green light-emitting diode.
• Pins: cathode, anode

7.4V Battery

• Description: A rechargeable battery providing 7.4V.
• Pins: +, -

USB Male 2 Pin Connection

• Description: A USB male connector with two pins.
• Pins: Negative -, Positive +

Wiring Details

Arduino UNO

• 5V connected to VIN of ESP8266 NodeMCU, vcc of IR Sensor, and vcc of SW-420 Vibration Sensor.
• GND connected to GND of ESP8266 NodeMCU, gnd of IR Sensor, and Ground of SW-420 Vibration Sensor.
• D6 connected to Digital output of SW-420 Vibration Sensor.
• D4 connected to out of IR Sensor.
• D1 connected to HV3 of Bi-Directional Logic Level Converter.
• D0 connected to HV4 of Bi-Directional Logic Level Converter.

ESP8266 NodeMCU

• VIN connected to 5V of Arduino UNO, vcc of IR Sensor, and vcc of SW-420 Vibration Sensor.
• GND connected to GND of Arduino UNO, cathode of LED.
• D4 connected to anode of LED.
• RX connected to LV3 of Bi-Directional Logic Level Converter.
• TX connected to LV4 of Bi-Directional Logic Level Converter.

SW-420 Vibration Sensor

• vcc connected to 5V of Arduino UNO, VIN of ESP8266 NodeMCU, and vcc of IR Sensor.
• Ground connected to GND of Arduino UNO, GND of ESP8266 NodeMCU, and gnd of IR Sensor.
• Digital output connected to D6 of Arduino UNO.

IR Sensor

• vcc connected to 5V of Arduino UNO, VIN of ESP8266 NodeMCU, and vcc of SW-420 Vibration Sensor.
• gnd connected to GND of Arduino UNO, GND of ESP8266 NodeMCU, and Ground of SW-420 Vibration Sensor.
• out connected to D4 of Arduino UNO.

Solar Panel

• gnd connected to Solar Cell - of Solar Charge Controller.
• vcc connected to Solar Cell + of Solar Charge Controller.

Solar Charge Controller

• Solar Cell - connected to gnd of Solar Panel.
• Solar Cell + connected to vcc of Solar Panel.
• Battery + connected to + of 7.4V Battery.
• Battery - connected to - of 7.4V Battery.

Bi-Directional Logic Level Converter

• HV3 connected to D1 of Arduino UNO.
• HV4 connected to D0 of Arduino UNO.
• LV3 connected to RX of ESP8266 NodeMCU.
• LV4 connected to TX of ESP8266 NodeMCU.

LED: Two Pin (green)

• anode connected to D4 of ESP8266 NodeMCU.
• cathode connected to GND of ESP8266 NodeMCU.

7.4V Battery

• + connected to Battery + of Solar Charge Controller.
• - connected to Battery - of Solar Charge Controller.

USB Male 2 Pin Connection

• Negative - connected to Negative - of another USB Male 2 Pin Connection.
• Positive + connected to Positive + of another USB Male 2 Pin Connection.

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:

}

Documentation File

• File Name: documentation.txt
• Content: (Empty)