Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as a DC motor, SIM900A GSM module, LM2956 Buck Converter, Solar Panel, Relay Module, GPS NEO 6M, L298N DC motor driver, Li-ion battery, CN3065 Solar Charge controller, and an ESP32 microcontroller. The circuit is designed to integrate these components to achieve a specific functionality, which involves power management, motor control, and communication capabilities.

Component List

1. DC Motor

   • Pins: pin 1, pin 2
   • Description: A motor that converts electrical energy into mechanical motion.
   • Purpose: Used for driving mechanical components.

2. SIM900A

   • Pins: GND, DB9-3 (RXD), DB9-2 (TXD), 5V, 3VR, 5VR, 3VT, 5VT, VCC, Ring, RESTART, RESET, STATUS
   • Description: A GSM module for communication.
   • Purpose: Provides GSM communication capabilities.

3. LM2956 Buck Converter DC-DC

   • Pins: OUT+, OUT-, IN+, IN-
   • Description: A DC-DC buck converter.
   • Purpose: Converts higher DC voltage to a lower DC voltage.

4. Solar Panel

   • Pins: +, -
   • Description: A solar panel for energy harvesting.
   • Purpose: Converts solar energy into electrical energy.

5. 1 Channel 5V Relay Module

   • Pins: VCC+, VCC- (GND), IN, N.O., COM, N.C.
   • Description: A relay module for switching.
   • Purpose: Used to control high voltage devices with a low voltage signal.

6. GPS NEO 6M

   • Pins: VCC, RX, TX, GND
   • Description: A GPS module for location tracking.
   • Purpose: Provides GPS location data.

7. L298N DC motor driver

   • Pins: OUT1, OUT2, 12V, GND, 5V, OUT3, OUT4, 5V-ENA-JMP-I, 5V-ENA-JMP-O, +5V-J1, +5V-J2, ENA, IN1, IN2, IN3, IN4, ENB
   • Description: A motor driver for controlling DC motors.
   • Purpose: Drives the DC motor.

8. Li-ion 5000mah

   • Pins: 11.1V, GND
   • Description: A rechargeable Li-ion battery.
   • Purpose: Provides power to the circuit.

9. CN3065 Solar Charge

   • Pins: SOLAR +, SOLAR -, BAT +, SYS -, SYS +, BAT -
   • Description: A solar charge controller.
   • Purpose: Manages the charging of the battery from the solar panel.

10. ESP32 38 PINS

    • Pins: GND, 23, 22/SCL, 1, 2, 21/SDA, 19, 18, 5, 17/TX2, 16/RX2, 4, 0, 15, D1, D0, CLK, 3V3, EN, VP, VN, 34, 35, 32, 33, 25, 26, 27, 14, 12, 13, D2, D3, 11, 5V/VIN
    • Description: A microcontroller with Wi-Fi and Bluetooth capabilities.
    • Purpose: Acts as the main controller for the circuit.

Wiring Details

DC Motor

• pin 1 connected to L298N DC motor driver OUT4
• pin 2 connected to L298N DC motor driver OUT3

SIM900A

• GND connected to ESP32 38 PINS GND
• DB9-3 (RXD) connected to ESP32 38 PINS 17/TX2
• DB9-2 (TXD) connected to ESP32 38 PINS 16/RX2
• 5V connected to 1 Channel 5V Relay Module VCC+

LM2956 Buck Converter DC-DC

• IN- connected to ESP32 38 PINS GND
• OUT- connected to ESP32 38 PINS GND
• OUT+ connected to L298N DC motor driver 5V
• IN+ connected to CN3065 Solar Charge BAT +

Solar Panel

• + connected to CN3065 Solar Charge SOLAR +
• - connected to CN3065 Solar Charge SOLAR -

1 Channel 5V Relay Module

• VCC+ connected to GPS NEO 6M VCC
• VCC- (GND) connected to ESP32 38 PINS GND
• IN connected to ESP32 38 PINS 13

GPS NEO 6M

• VCC connected to 1 Channel 5V Relay Module VCC+
• RX connected to ESP32 38 PINS 1
• TX connected to ESP32 38 PINS 2
• GND connected to ESP32 38 PINS GND

L298N DC motor driver

• GND connected to ESP32 38 PINS GND
• 5V connected to LM2956 Buck Converter DC-DC OUT+
• 12V connected to LM2956 Buck Converter DC-DC OUT+
• OUT3 connected to DC Motor pin 2
• OUT4 connected to DC Motor pin 1

Li-ion 5000mah

• 11.1V connected to CN3065 Solar Charge BAT +
• GND connected to ESP32 38 PINS GND

CN3065 Solar Charge

• SOLAR + connected to Solar Panel +
• SOLAR - connected to Solar Panel -
• BAT + connected to Li-ion 5000mah 11.1V
• BAT - connected to ESP32 38 PINS GND

ESP32 38 PINS

• GND connected to 1 Channel 5V Relay Module VCC- (GND)
• 5V/VIN connected to L298N DC motor driver 5V
• 13 connected to 1 Channel 5V Relay Module IN
• 17/TX2 connected to SIM900A DB9-3 (RXD)
• 16/RX2 connected to SIM900A DB9-2 (TXD)
• 1 connected to GPS NEO 6M RX
• 2 connected to GPS NEO 6M TX

Code

No code is provided for this circuit.

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This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and code documentation. Each component is described in detail, and the wiring connections are clearly outlined to ensure proper assembly and functionality of the circuit.