Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP32 microcontroller, a PM2.5 Air Quality Sensor, a DHT11 temperature and humidity sensor, and a 7.4V power supply. The circuit is designed to monitor air quality and environmental conditions, with data processed and transmitted by the ESP32.

Component List

1. ESP32 (30 pin)

   • Description: A powerful microcontroller with built-in 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

2. PM2.5 Air Quality Sensor and Breadboard Adapter Kit - PMS5003

   • Description: A sensor module for measuring particulate matter (PM2.5) in the air.
   • Pins: VCC, GND, SET, RX, TX, RST

3. DHT11

   • Description: A basic, low-cost digital temperature and humidity sensor.
   • Pins: VCC, GND, DATA

4. 7.4V Power Supply

   • Description: A power source providing 7.4V.
   • Pins: +, -

Wiring Details

ESP32 (30 pin)

• GND: Connected to the negative terminal of the 7.4V power supply and the ground pins of the PM2.5 Air Quality Sensor and DHT11.
• Vin: Connected to the positive terminal of the 7.4V power supply.
• D5: Connected to the DATA pin of the DHT11.
• TX2: Connected to the RX pin of the PM2.5 Air Quality Sensor.
• RX2: Connected to the TX pin of the PM2.5 Air Quality Sensor.
• 3V3: Connected to the VCC pins of the PM2.5 Air Quality Sensor and DHT11.

PM2.5 Air Quality Sensor and Breadboard Adapter Kit - PMS5003

• VCC: Connected to the 3V3 pin of the ESP32.
• GND: Connected to the GND pin of the ESP32 and the ground pin of the DHT11.
• RX: Connected to the TX2 pin of the ESP32.
• TX: Connected to the RX2 pin of the ESP32.

DHT11

• VCC: Connected to the 3V3 pin of the ESP32.
• GND: Connected to the GND pin of the ESP32 and the ground pin of the PM2.5 Air Quality Sensor.
• DATA: Connected to the D5 pin of the ESP32.

7.4V Power Supply

• +: Connected to the Vin pin of the ESP32.
• -: Connected to the GND pin of the ESP32.

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. The wiring details section ensures that each component's connections are clearly outlined, facilitating easy assembly and troubleshooting.