Circuit Documentation

Summary

This document provides a detailed overview of a circuit that integrates an ESP32 microcontroller, an Arduino UNO, a GPS module, a servo motor, a relay, a solenoid, a step-down voltage regulator, and power sources including 18650 Li-ion batteries and a solar charger power bank. The circuit is designed to perform various functions, including GPS tracking, servo control, and relay switching.

Component List

1. ESP32 (30 pin)

   • Description: A powerful microcontroller with built-in Wi-Fi and Bluetooth capabilities.
   • Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, Vin, D23, D22, TX0, RX0, D21, D19, D18, D5, TX2, RX2, D4, D2, D15, 3V3

2. Arduino UNO

   • Description: A popular 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

3. GPS NEO 6M

   • Description: A GPS module used for tracking and navigation.
   • Pins: VCC, RX, TX, GND

4. Regulator Stepdown DC with LCD Display

   • Description: A step-down voltage regulator with an LCD display for monitoring output voltage.
   • Pins: IN +, IN -, OUT +, OUT -

5. 18650 Li-ion Battery x 2

   • Description: Rechargeable lithium-ion batteries.
   • Pins: +, -

6. 5v relay

   • Description: A relay module used for switching high-power devices.
   • Pins: Normally Open, Common terminal, Normally Closed, In, GND, VCC

7. Solar Charger Power Bank

   • Description: A power bank with solar charging capabilities.
   • Pins: +, -

8. Power Jack

   • Description: A power jack for connecting external power sources.
   • Pins: POSITIF, NEGATIF

9. Micro USB to Cable (2 Pin)

   • Description: A micro USB to 2-pin cable for power connections.
   • Pins: Micro USB, +, -

10. Servo

    • Description: A servo motor for precise control of angular position.
    • Pins: GND, VCC, PWM

11. Solenoid

    • Description: An electromechanical solenoid for linear actuation.
    • Pins: pin1, pin2

Wiring Details

ESP32 (30 pin)

• GND connected to Arduino UNO GND

Arduino UNO

• GND connected to ESP32 GND and 5v relay GND
• D0 connected to ESP32 TX2
• D1 connected to ESP32 RX2
• 5V connected to Servo VCC and 5v relay VCC
• D9 connected to Servo PWM
• D7 connected to 5v relay In
• D4 connected to GPS NEO 6M TX
• D3 connected to GPS NEO 6M RX

GPS NEO 6M

• TX connected to Arduino UNO D4
• RX connected to Arduino UNO D3
• VCC connected to Regulator Stepdown DC with LCD Display OUT +
• GND connected to Regulator Stepdown DC with LCD Display OUT -

Regulator Stepdown DC with LCD Display

• IN + connected to 18650 Li-ion Battery x 2 +
• IN - connected to 18650 Li-ion Battery x 2 - and Solenoid pin1
• OUT + connected to GPS NEO 6M VCC
• OUT - connected to GPS NEO 6M GND

18650 Li-ion Battery x 2

• + connected to 5v relay Common terminal and Regulator Stepdown DC with LCD Display IN +
• - connected to Solenoid pin1 and Regulator Stepdown DC with LCD Display IN -

5v relay

• Common terminal connected to 18650 Li-ion Battery x 2 +
• Normally Closed connected to Solenoid pin2
• In connected to Arduino UNO D7
• GND connected to Arduino UNO GND
• VCC connected to Arduino UNO 5V

Solar Charger Power Bank

• + connected to Power Jack POSITIF and Micro USB to Cable (2 Pin) +
• - connected to Power Jack NEGATIF and Micro USB to Cable (2 Pin) -

Power Jack

• POSITIF connected to Solar Charger Power Bank +
• NEGATIF connected to Solar Charger Power Bank -

Micro USB to Cable (2 Pin)

• + connected to Solar Charger Power Bank +
• - connected to Solar Charger Power Bank -

Servo

• VCC connected to Arduino UNO 5V
• GND connected to Arduino UNO GND
• PWM connected to Arduino UNO D9

Solenoid

• pin1 connected to 18650 Li-ion Battery x 2 - and Regulator Stepdown DC with LCD Display IN -
• pin2 connected to 5v relay Normally Closed

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:

}

Additional Documentation (documentation.txt)

This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and documented code.