Smart Energy Monitoring and Control System with Wi-Fi Connectivity and Visual Feedback
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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.