Circuit Documentation

Summary

The circuit in question appears to be a monitoring and control system for single-phase AC power supply lines, utilizing energy meters, RS485 communication modules, and ESP32 microcontrollers. The energy meters are likely used to measure electrical parameters such as voltage, current, and power consumption. The RS485 modules facilitate communication, possibly for remote data acquisition or control. The ESP32 microcontrollers are likely used for processing the data from the energy meters and handling the communication protocol over RS485.

Component List

Single Phase Energy Meter

• Description: Measures electrical parameters of a single-phase AC supply.
• Pins: L-In, Phase, L-out, Neutral, B, A

ESP 32 Wroom Dev Kit

• Description: A microcontroller development board with Wi-Fi and Bluetooth capabilities.
• Pins: 3V3, EN, VP, VN, GPIOs, GND, SDx, CMD, V5, TXD, RXD, CLK

RS485 Module

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

AC Supply

• Description: Provides the AC power for the circuit.
• Pins: +ve, -ve

AC Bulb

• Description: An AC-powered light bulb.
• Pins: P, N

Wiring Details

Single Phase Energy Meter

• L-In: Connected to the +ve pin of an AC Supply.
• Phase: Connected to the P pin of an AC Bulb.
• L-out: Connected to the -ve pin of an AC Supply.
• Neutral: Connected to the N pin of an AC Bulb.
• B: Connected to the B pin of an RS485 Module.
• A: Connected to the A pin of an RS485 Module.

ESP 32 Wroom Dev Kit

• 3V3: Connected to the VCC pin of an RS485 Module.
• GND: Connected to the GND pin of an RS485 Module.
• GPIO 17: Connected to the DI pin of an RS485 Module.
• GPIO 16: Connected to the RO pin of an RS485 Module.
• GPIO 4: Connected to the DE pin of an RS485 Module.

RS485 Module

• VCC: Connected to the 3V3 pin of an ESP 32 Wroom Dev Kit.
• RO: Connected to the GPIO 16 pin of an ESP 32 Wroom Dev Kit.
• RE: Not connected in the provided net list.
• GND: Connected to the GND pin of an ESP 32 Wroom Dev Kit.
• B: Connected to the B pin of a Single Phase Energy Meter.
• A: Connected to the A pin of a Single Phase Energy Meter.
• DE: Connected to the GPIO 4 pin of an ESP 32 Wroom Dev Kit.
• DI: Connected to the GPIO 17 pin of an ESP 32 Wroom Dev Kit.

AC Supply

• +ve: Connected to the L-In pin of a Single Phase Energy Meter.
• -ve: Connected to the L-out pin of a Single Phase Energy Meter.

AC Bulb

• P: Connected to the Phase pin of a Single Phase Energy Meter.
• N: Connected to the Neutral pin of a Single Phase Energy Meter.

Documented Code

No code was provided for the microcontrollers in the circuit. Therefore, this section is not applicable for the current documentation. If code becomes available, it should be documented here with explanations for each function and routine, including setup and loop structures, interrupt service routines, and any communication protocol implementations.