Circuit Documentation

Summary

This document provides a detailed overview of a circuit that integrates an ESP32 microcontroller, an LCD display, an I2C module, a 5V Type C DC socket, a mini diaphragm water pump, an HC-SR04 ultrasonic sensor, and a 5V relay. The circuit is designed to control the water pump based on sensor inputs and display relevant information on the LCD.

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. LCD Display (16 pin)

   • Description: A 16x2 character LCD display.
   • Pins: VSS, VDD, VO, RS, R_W, E, DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7, A, K

3. I2C module

   • Description: A module to interface with I2C devices.
   • Pins: SCL, SDA, VCC, GND

4. 5V Type C DC Socket

   • Description: A power input socket for 5V Type C power supply.
   • Pins: - Negative, + Positive

5. Mini Diaphragm Water Pump

   • Description: A small water pump for liquid transfer.
   • Pins: Positive (+), Negative (-)

6. HC-SR04 Ultrasonic Sensor

   • Description: A sensor to measure distance using ultrasonic waves.
   • Pins: VCC, TRIG, ECHO, GND

7. 5V relay

   • Description: A relay module to control high voltage devices.
   • Pins: Normally Open, Common terminal, Normally Closed, In, GND, VCC

Wiring Details

ESP32 (30 pin)

• D34: Connected to ECHO pin of HC-SR04 Ultrasonic Sensor
• D33: Connected to TRIG pin of HC-SR04 Ultrasonic Sensor
• D26: Connected to In pin of 5V relay
• GND: Connected to GND pin of I2C module, GND pin of HC-SR04 Ultrasonic Sensor, and GND pin of 5V relay
• Vin: Connected to VCC pin of I2C module and VCC pin of HC-SR04 Ultrasonic Sensor
• D22: Connected to SCL pin of I2C module
• D21: Connected to SDA pin of I2C module
• 3V3: Connected to VCC pin of 5V relay

LCD Display (16 pin)

• No connections specified in the provided net list.

I2C module

• SCL: Connected to D22 pin of ESP32
• SDA: Connected to D21 pin of ESP32
• VCC: Connected to Vin pin of ESP32
• GND: Connected to GND pin of ESP32

5V Type C DC Socket

• - Negative: Connected to Negative (-) pin of Mini Diaphragm Water Pump
• + Positive: Connected to Normally Open pin of 5V relay

Mini Diaphragm Water Pump

• Negative (-): Connected to - Negative pin of 5V Type C DC Socket
• Positive (+): Connected to Common terminal pin of 5V relay

HC-SR04 Ultrasonic Sensor

• VCC: Connected to Vin pin of ESP32
• TRIG: Connected to D33 pin of ESP32
• ECHO: Connected to D34 pin of ESP32
• GND: Connected to GND pin of ESP32

5V relay

• Normally Open: Connected to + Positive pin of 5V Type C DC Socket
• Common terminal: Connected to Positive (+) pin of Mini Diaphragm Water Pump
• In: Connected to D26 pin of ESP32
• GND: Connected to GND pin of ESP32
• VCC: Connected to 3V3 pin of ESP32

Code

No code was provided for the microcontrollers in this circuit.