Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP32-POE2 microcontroller and two 4 Channel 30A 5V Relays. The ESP32-POE2 is used to control the relays, which can be used to switch high-power devices. The circuit is designed to be powered by a 5V power supply.

Component List

ESP32-POE2

• Description: A microcontroller with integrated Wi-Fi and Bluetooth, designed for IoT applications.
• Pins:
  • 12/24V Selectable
  • 5VP
  • 5V
  • 3.3V
  • EN
  • GPIO0
  • GPIO1/U0TXD
  • GPIO2/HS2_DATA0
  • GPIO3/U0RXD
  • GPIO4/U1TXD
  • GPIO5/SPI_CS
  • GPIO12/PHY_PWR (MTDI)
  • GPIO13/12C-SDA (MTCK)
  • GND
  • GPI39
  • GPI36/U1RXD
  • GPI35
  • GPI34/BUT1
  • GPIO33
  • GPIO32
  • GPIO16/I2C-SCL
  • GPIO15/HS2_CMD(MTDO)
  • GPIO14/HS2_CLK(MTMS)
  • GPIO13/I2C-SDA (MTCK)

4 Channel 30A 5V Relay (2 units)

• Description: A relay module capable of switching high-power devices, controlled by a 5V signal.
• Pins:
  • 5V
  • GND
  • IN1+
  • IN1-
  • IN2+
  • IN2-
  • IN3+
  • IN3-
  • IN4+
  • IN4-

Wiring Details

ESP32-POE2

• 5V: Connected to the 5V pin of both 4 Channel 30A 5V Relays.
• GPIO2/HS2_DATA0: Connected to IN1+ of the first 4 Channel 30A 5V Relay.
• GPIO3/U0RXD: Connected to IN4+ of the second 4 Channel 30A 5V Relay.
• GPIO4/U1TXD: Connected to IN3+ of the second 4 Channel 30A 5V Relay.
• GPIO5/SPI_CS: Connected to IN2+ of the second 4 Channel 30A 5V Relay.
• GPIO13/12C-SDA (MTCK): Connected to IN1+ of the second 4 Channel 30A 5V Relay.
• GND: Connected to the GND pin of both 4 Channel 30A 5V Relays.

4 Channel 30A 5V Relay (First Unit)

• 5V: Connected to the 5V pin of the ESP32-POE2.
• GND: Connected to the GND pin of the ESP32-POE2.
• IN1+: Connected to GPIO2/HS2_DATA0 of the ESP32-POE2.
• IN1-: Connected to GND.
• IN2+: Connected to GPIO14/HS2_CLK(MTMS) of the ESP32-POE2.
• IN2-: Connected to GND.
• IN3+: Connected to GPIO15/HS2_CMD(MTDO) of the ESP32-POE2.
• IN3-: Connected to GND.
• IN4+: Connected to GPIO32 of the ESP32-POE2.
• IN4-: Connected to GND.

4 Channel 30A 5V Relay (Second Unit)

• 5V: Connected to the 5V pin of the ESP32-POE2.
• GND: Connected to the GND pin of the ESP32-POE2.
• IN1+: Connected to GPIO13/12C-SDA (MTCK) of the ESP32-POE2.
• IN1-: Connected to GND.
• IN2+: Connected to GPIO5/SPI_CS of the ESP32-POE2.
• IN2-: Connected to GND.
• IN3+: Connected to GPIO4/U1TXD of the ESP32-POE2.
• IN3-: Connected to GND.
• IN4+: Connected to GPIO3/U0RXD of the ESP32-POE2.
• IN4-: Connected to GND.

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. The ESP32-POE2 microcontroller is used to control two 4 Channel 30A 5V Relays, allowing for the switching of high-power devices.