Circuit Documentation

Summary

This circuit integrates an Arduino UNO with a SIM800L GSM module, a GPS NEO 6M module, and multiple micro switches. It is powered by a 12V battery, and a step-down buck converter is used to regulate the voltage for the components requiring lower voltages. The Arduino UNO serves as the central processing unit, interfacing with the GPS module for location tracking and the SIM800L module for GSM communication. The micro switches are likely used as input devices to trigger certain actions within the circuit.

Component List

Arduino UNO

• Microcontroller board based on the ATmega328P
• It has 14 digital input/output pins, 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header, and a reset button.

SIM800L GSM Module

• A compact GSM/GPRS module for mobile communication
• It can make calls, send SMS, and connect to the internet over GPRS.

GPS NEO 6M Module

• A GPS module that provides location data via satellite positioning
• It has serial communication capabilities to interface with microcontrollers.

Micro Switches

• Electromechanical switches that are typically used to detect the presence or absence of an object or to detect contact between objects.
• Each switch has a common (COM), normally open (NO), and normally closed (NC) terminal.

Step-down Buck Converter

• A DC-DC converter that steps down voltage from a higher level to a lower level.
• It has input terminals for voltage and ground, and output terminals for regulated voltage and ground.

12V Batteries

• Provide the power source for the circuit.
• Each battery has a positive (+) and negative (-) terminal.

Wiring Details

Arduino UNO

• 5V connected to GPS NEO 6M VCC
• GND connected to the ground of all components
• Vin connected to the output of the step-down buck converter
• Digital Pins:
  • D5 connected to the common (COM) terminals of the micro switches
  • D4 connected to the NET pin of the SIM800L module
  • D3 connected to the RST pin of the SIM800L module
  • D1 connected to the RXD pin of the SIM800L module and RX pin of the GPS NEO 6M module
  • D0 connected to the TXD pin of the SIM800L module and TX pin of the GPS NEO 6M module

SIM800L GSM Module

• VCC connected to the output of the step-down buck converter
• GND connected to the ground of all components
• NET connected to Arduino UNO D4
• RST connected to Arduino UNO D3
• RXD connected to Arduino UNO D1
• TXD connected to Arduino UNO D0

GPS NEO 6M Module

• VCC connected to Arduino UNO 5V
• GND connected to the ground of all components
• RX connected to Arduino UNO D1
• TX connected to Arduino UNO D0

Micro Switches

• COM terminals connected to Arduino UNO D5
• NO terminals connected to the ground of all components
• NC terminals connected to the output of the step-down buck converter

Step-down Buck Converter

• IN + connected to the positive terminals of the 12V batteries
• IN - GND connected to the negative terminals of the 12V batteries
• OUT + connected to the NC terminals of the micro switches and VCC of the SIM800L module
• OUT - GND connected to the ground of all components

12V Batteries

• + terminals connected to the input of the step-down buck converter
• - terminals connected to the input of the step-down buck converter

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:

}

Note: The provided code is a template and does not contain any functional code. It needs to be populated with the logic to control the SIM800L module, read GPS data, and handle the micro switches.