Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP8266 NodeMCU, ACS712 Current Sensor, ZMPT101B Voltage Sensor, a 5V Relay, and a CD4051 Multiplexer. The circuit is designed to interface various sensors and control a relay using the ESP8266 microcontroller.

Component List

1. ESP8266 NodeMCU

   • Description: A low-cost Wi-Fi microcontroller with GPIO, ADC, and UART capabilities.
   • Pins: D0, D1, D2, D3, D4, 3V3, GND, D5, D6, D7, D8, RX, TX, A0, RSV, SD3, SD2, SD1, CMD, SD0, CLK, EN, RST, VIN

2. ACS712 Current Sensor 5A 20A 30A

   • Description: A current sensor that provides an analog voltage output proportional to the current passing through it.
   • Pins: 1, 2, GND, OUT, VCC

3. ZMPT101B

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

4. 5V Relay

   • Description: An electromechanical relay used to control high voltage devices with a low voltage signal.
   • Pins: Normally Open, Common terminal, Normally Closed, In, GND, VCC

5. CD4051

   • Description: An 8-channel analog multiplexer/demultiplexer.
   • Pins: CH0, CH1, VDD, DA, DB, DC, COM

Wiring Details

ESP8266 NodeMCU

• D1 connected to DA of CD4051
• D2 connected to DB of CD4051
• D3 connected to DC of CD4051
• D4 connected to In of 5V Relay
• A0 connected to COM of CD4051
• 3V3 connected to VCC of ZMPT101B and VCC of ACS712 Current Sensor
• GND connected to GND of ZMPT101B and GND of ACS712 Current Sensor

ACS712 Current Sensor 5A 20A 30A

• VCC connected to 3V3 of ESP8266 NodeMCU
• GND connected to GND of ESP8266 NodeMCU
• OUT connected to CH1 of CD4051

ZMPT101B

• VCC connected to 3V3 of ESP8266 NodeMCU
• GND connected to GND of ESP8266 NodeMCU
• OUT connected to CH0 of CD4051

5V Relay

• In connected to D4 of ESP8266 NodeMCU

CD4051

• DA connected to D1 of ESP8266 NodeMCU
• DB connected to D2 of ESP8266 NodeMCU
• DC connected to D3 of ESP8266 NodeMCU
• COM connected to A0 of ESP8266 NodeMCU
• CH0 connected to OUT of ZMPT101B
• CH1 connected to OUT of ACS712 Current Sensor

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 section is designed to offer clear and concise information to facilitate understanding and replication of the circuit.