Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP32 microcontroller, an RS485 communication module, an ACS712 current sensor, a 1-channel relay, and a ZMPT101B voltage sensor. The circuit is designed to monitor current and voltage, control a relay, and communicate via RS485.

Component List

1. ESP32

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

2. RS485

   • Description: A communication module for RS485 protocol.
   • Pins: VCC, RO, RE, GND, B, A, DE, DI

3. ACS712 Current Sensor 5A 20A 30A

   • Description: A current sensor capable of measuring up to 30A.
   • Pins: 1, 2, GND, OUT, VCC

4. 1-Channel Relay (5V 10A)

   • Description: A relay module capable of switching high power loads.
   • Pins: NC, signal, C, power, NO, ground

5. ZMPT101B

   • Description: A voltage sensor for AC voltage measurement.
   • Pins: OUT, GND, VCC, NEUTRO, FASE

Wiring Details

ESP32

• VN is connected to:

  • VCC of ACS712 Current Sensor
  • VCC of RS485
  • power of 1-Channel Relay
  • VCC of ZMPT101B

• D34 is connected to:

  • OUT of ACS712 Current Sensor

• D35 is connected to:

  • OUT of ZMPT101B

• GND is connected to:

  • GND of ACS712 Current Sensor
  • GND of ZMPT101B
  • GND of RS485
  • ground of 1-Channel Relay

• D2 is connected to:

  • DE of RS485

• D4 is connected to:

  • RE of RS485

• RX2 is connected to:

  • RO of RS485

• TX2 is connected to:

  • DI of RS485

• D5 is connected to:

  • signal of 1-Channel Relay

RS485

• VCC is connected to:

  • VN of ESP32

• RO is connected to:

  • RX2 of ESP32

• RE is connected to:

  • D4 of ESP32

• GND is connected to:

  • GND of ESP32

• DE is connected to:

  • D2 of ESP32

• DI is connected to:

  • TX2 of ESP32

ACS712 Current Sensor 5A 20A 30A

• VCC is connected to:

  • VN of ESP32

• OUT is connected to:

  • D34 of ESP32

• GND is connected to:

  • GND of ESP32

1-Channel Relay (5V 10A)

• power is connected to:

  • VN of ESP32

• signal is connected to:

  • D5 of ESP32

• ground is connected to:

  • GND of ESP32

ZMPT101B

• VCC is connected to:

  • VN of ESP32

• OUT is connected to:

  • D35 of ESP32

• GND is connected to:

  • GND of ESP32

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, and the connections between components are clearly outlined.