Circuit Documentation

Summary

This circuit involves an ESP8266 NodeMCU, an ESP32-CAM, three Two Channel Relay modules, several bulbs, an LM2596 voltage regulator, and a 12V battery. The ESP8266 NodeMCU controls the relays, which in turn control the bulbs. The ESP32-CAM is used for video streaming. The LM2596 voltage regulator steps down the voltage from the 12V battery to power the components.

Component List

ESP8266 NodeMCU

• Description: A low-cost Wi-Fi microcontroller with GPIO, PWM, ADC, I2C, and 1-Wire resources.
• 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

ESP32-CAM

• Description: A small-sized camera module with an ESP32-S chip, capable of video streaming.
• Pins: 5V, GND, IO12, IO13, IO15, IO14, IO2, IO4, VOT, VOR, VCC, IO0, IO16, 3V3

Two Channel Relay 5V (3 instances)

• Description: A relay module that allows control of high voltage devices like bulbs.
• Pins: VCC, IN2, IN1, GND, NC2, C2, NO2, NC1, C1, NO1

Bulb (6 instances)

• Description: Standard light bulbs controlled by the relay modules.
• Pins: GND, power

12V Battery

• Description: A power source for the circuit.
• Pins: -, +

LM2596

• Description: A voltage regulator module that steps down the voltage from the 12V battery.
• Pins: IN, OUT

Wiring Details

ESP8266 NodeMCU

• VIN: Connected to 5V pin of ESP32-CAM, VCC pins of all Three Two Channel Relay modules, and OUT pin of LM2596.
• GND: Connected to GND pin of ESP32-CAM, GND pins of all Three Two Channel Relay modules, and OUT pin of LM2596.
• D1: Connected to IN1 pin of the first Two Channel Relay module.
• D2: Connected to IN2 pin of the first Two Channel Relay module.
• D3: Connected to IN1 pin of the second Two Channel Relay module.
• D4: Connected to IN2 pin of the second Two Channel Relay module.
• D5: Connected to IN1 pin of the third Two Channel Relay module.
• D6: Connected to IN2 pin of the third Two Channel Relay module.
• RX: Connected to VOT pin of ESP32-CAM.
• TX: Connected to VOR pin of ESP32-CAM.

ESP32-CAM

• 5V: Connected to VIN pin of ESP8266 NodeMCU, VCC pins of all Three Two Channel Relay modules, and OUT pin of LM2596.
• GND: Connected to GND pin of ESP8266 NodeMCU, GND pins of all Three Two Channel Relay modules, and OUT pin of LM2596.
• VOT: Connected to RX pin of ESP8266 NodeMCU.
• VOR: Connected to TX pin of ESP8266 NodeMCU.

Two Channel Relay 5V (First Instance)

• VCC: Connected to 5V pin of ESP32-CAM, VIN pin of ESP8266 NodeMCU, and OUT pin of LM2596.
• GND: Connected to GND pin of ESP32-CAM, GND pin of ESP8266 NodeMCU, and OUT pin of LM2596.
• IN1: Connected to D1 pin of ESP8266 NodeMCU.
• IN2: Connected to D2 pin of ESP8266 NodeMCU.
• NO1: Connected to power pin of the second bulb.
• NO2: Connected to power pin of the first bulb.

Two Channel Relay 5V (Second Instance)

• VCC: Connected to 5V pin of ESP32-CAM, VIN pin of ESP8266 NodeMCU, and OUT pin of LM2596.
• GND: Connected to GND pin of ESP32-CAM, GND pin of ESP8266 NodeMCU, and OUT pin of LM2596.
• IN1: Connected to D3 pin of ESP8266 NodeMCU.
• IN2: Connected to D4 pin of ESP8266 NodeMCU.
• NO1: Connected to power pin of the fourth bulb.
• NO2: Connected to power pin of the third bulb.

Two Channel Relay 5V (Third Instance)

• VCC: Connected to 5V pin of ESP32-CAM, VIN pin of ESP8266 NodeMCU, and OUT pin of LM2596.
• GND: Connected to GND pin of ESP32-CAM, GND pin of ESP8266 NodeMCU, and OUT pin of LM2596.
• IN1: Connected to D5 pin of ESP8266 NodeMCU.
• IN2: Connected to D6 pin of ESP8266 NodeMCU.
• NO1: Connected to power pin of the sixth bulb.
• NO2: Connected to power pin of the fifth bulb.

Bulbs

• GND: All bulbs' GND pins are interconnected.
• Power:
  • First bulb: Connected to NO2 pin of the first Two Channel Relay module.
  • Second bulb: Connected to NO1 pin of the first Two Channel Relay module.
  • Third bulb: Connected to NO2 pin of the second Two Channel Relay module.
  • Fourth bulb: Connected to NO1 pin of the second Two Channel Relay module.
  • Fifth bulb: Connected to NO2 pin of the third Two Channel Relay module.
  • Sixth bulb: Connected to NO1 pin of the third Two Channel Relay module.

12V Battery

• -: Connected to IN pin of LM2596.
• +: Connected to IN pin of LM2596.

LM2596

• IN: Connected to + and - pins of the 12V battery.
• OUT: Connected to 5V pin of ESP32-CAM, VIN pin of ESP8266 NodeMCU, and VCC pins of all Three Two Channel Relay modules. Also connected to GND pin of ESP32-CAM, GND pin of ESP8266 NodeMCU, and GND pins of all Three Two Channel Relay modules.

Code

No code provided for this circuit.