Circuit Documentation

Summary

The circuit in question appears to be a control and monitoring system that utilizes an ESP32 microcontroller to interface with various components including a relay module, a DC-DC step-down converter, a power monitoring module (PZEM004t), a NeoPixel LED ring, a TFT display, and a circuit breaker. The ESP32 controls the relay, communicates with the PZEM004t for power monitoring, drives the TFT display, and controls the NeoPixel ring. The circuit is powered by a DC power source and also includes an AC supply connected through a circuit breaker.

Component List

5v 2-Relay JD-VCC

• Description: A relay module with two relays that can be controlled independently.
• Pins: JD-VCC, VCC, GND, IN1, IN2, NO, COM, NC

XL4015 5A DC Buck Step-down

• Description: A DC-DC step-down (buck) converter capable of handling up to 5A of current.
• Pins: Output +, Output -, Input +, Input -

DC Power Source

• Description: A source of DC power for the circuit.
• Pins: Ground, Positive

Ac Supply

• Description: An AC power supply.
• Pins: +ve, -ve

Adafruit 12 NeoPixel Ring

• Description: A ring of 12 individually addressable RGB LEDs.
• Pins: OUT, VDD, IN, GND

PZEM004t

• Description: A power monitoring module capable of measuring voltage, current, power, and energy.
• Pins: VCC, RX, TX, GND, IN, OUT

Socket

• Description: An electrical socket for connecting devices to AC power.
• Pins: Earth, Life, Neutral

ST7735 128x128 1.44 TFT I2C Color

• Description: A small TFT display with a resolution of 128x128 pixels.
• Pins: BL, C5, DC, RES, SDA, SCL, GND, VCC

ESP32 (30 pin)

• Description: A microcontroller with 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

Circuit Breaker

• Description: A safety device designed to protect an electrical circuit from damage caused by excess current.
• Pins: -, +

Wiring Details

5v 2-Relay JD-VCC

• VCC: Connected to ESP32 Vin
• GND: Connected to ESP32 GND
• IN1: Connected to ESP32 D14
• IN2: Connected to ESP32 D27
• COM: Connected to PZEM004t IN
• NO: Connected to socket life

XL4015 5A DC Buck Step-down

• Output +: Connected to ESP32 Vin
• Output -: Connected to ESP32 GND
• Input +: Connected to DC Power Source Positive
• Input -: Connected to DC Power Source Ground

DC Power Source

• Positive: Connected to XL4015 Input +
• Ground: Connected to XL4015 Input -

Ac Supply

• +ve: Connected to Circuit Breaker +
• -ve: Connected to Circuit Breaker -

Adafruit 12 NeoPixel Ring

• IN: Connected to PZEM004t IN
• OUT: Connected to PZEM004t OUT
• VDD: Not connected in the provided net list
• GND: Not connected in the provided net list

PZEM004t

• VCC: Connected to ESP32 Vin
• GND: Connected to ESP32 GND
• RX: Connected to ESP32 TX2
• TX: Connected to ESP32 RX2
• IN: Connected to Circuit Breaker + and Adafruit 12 NeoPixel Ring IN
• OUT: Connected to socket neutral and Adafruit 12 NeoPixel Ring OUT

Socket

• Neutral: Connected to PZEM004t OUT
• Life: Connected to 5v 2-Relay JD-VCC NO
• Earth: Not connected in the provided net list

ST7735 128x128 1.44 TFT I2C Color

• BL: Connected to ESP32 3V3
• C5: Connected to ESP32 D5
• DC: Connected to ESP32 D2
• RES: Connected to ESP32 D4
• SDA: Connected to ESP32 D23
• SCL: Connected to ESP32 D18
• GND: Connected to ESP32 GND
• VCC: Connected to ESP32 3V3

ESP32 (30 pin)

• Vin: Connected to XL4015 Output + and 5v 2-Relay JD-VCC VCC
• GND: Connected to XL4015 Output -, 5v 2-Relay JD-VCC GND, PZEM004t GND, and ST7735 GND
• D27: Connected to 5v 2-Relay JD-VCC IN2
• D14: Connected to 5v 2-Relay JD-VCC IN1
• D23: Connected to ST7735 SDA
• D18: Connected to ST7735 SCL
• D5: Connected to ST7735 C5
• TX2: Connected to PZEM004t RX
• RX2: Connected to PZEM004t TX
• D4: Connected to ST7735 RES
• D2: Connected to ST7735 DC
• 3V3: Connected to ST7735 BL and VCC

Circuit Breaker

• +: Connected to Ac Supply +ve and PZEM004t IN
• -: Connected to Ac Supply -ve and PZEM004t OUT

Documented Code

No code was provided for the microcontroller(s) in the circuit. Therefore, this section is not applicable.