Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP32 Wroom microcontroller, ENS220 evaluation kits, and several resistors. The circuit is designed to interface the ESP32 with the ENS220 sensors and includes necessary pull-up resistors for I2C communication.

Component List

ESP32 Wroom

• Description: A powerful microcontroller with Wi-Fi and Bluetooth capabilities.
• Pins:
  • 2 (3V3)
  • 3 (Reset)
  • 4 (GPIO36)
  • 5 (GPIO39)
  • 6 (GPIO34)
  • 7 (GPIO35)
  • 8 (GPIO32)
  • 9 (GPIO33)
  • 10 (GPIO25)
  • 11 (GPIO26)
  • 12 (GPIO27)
  • 13 (GPIO14)
  • 14 (GPIO12)
  • GND
  • 16 (GPIO13)
  • 17 (GPIO9)
  • 18 (GPIO10)
  • 19 (GPIO11)
  • 5V
  • 37 (GPIO23)
  • 36 (GPIO22/SCL)
  • 35 (GPIO1/TXD0)
  • 34 (GPIO3/RXD0)
  • 33 (GPIO21/SDA)
  • 31 (GPIO19)
  • 30 (GPIO18)
  • 29 (GPIO5)
  • 28 (GPIO17)
  • 27 (GPIO16)
  • 26 (GPIO4)
  • 25 (GPIO0)
  • 24 (GPIO2)
  • 23 (GPIO15)
  • 22 (GPIO8)
  • 21 (GPIO7)
  • 20 (GPIO6)

ENS220 Evaluation Kit

• Description: A sensor module for environmental sensing.
• Pins:
  • GND
  • 3V3
  • SDA
  • SCL
  • INT
  • CS
  • 1V8out

Resistor (1k Ohms)

• Description: A resistor with a resistance of 1000 Ohms.
• Pins:
  • pin1
  • pin2

Resistor (180 Ohms)

• Description: A resistor with a resistance of 180 Ohms.
• Pins:
  • pin1
  • pin2

Wiring Details

ESP32 Wroom

• 2 (3V3): Connected to 3V3 of ENS220 evaluation kit.
• GND: Connected to GND of ENS220 evaluation kit and pin2 of 1k Ohm resistor.
• 37 (GPIO23): Connected to pin2 of 180 Ohm resistor.
• 31 (GPIO19): Connected to SDA of ENS220 evaluation kit and pin1 of 180 Ohm resistor.
• 30 (GPIO18): Connected to SCL of ENS220 evaluation kit.
• 29 (GPIO5): Connected to pin1 of 1k Ohm resistor.

ENS220 Evaluation Kit

• 3V3: Connected to 3V3 of ESP32 Wroom.
• GND: Connected to GND of ESP32 Wroom and pin2 of 1k Ohm resistor.
• SDA: Connected to GPIO19 of ESP32 Wroom and pin1 of 180 Ohm resistor.
• SCL: Connected to GPIO18 of ESP32 Wroom.
• CS: Connected to pin1 of 1k Ohm resistor and pin2 of another 1k Ohm resistor.

Resistor (1k Ohms)

• pin1: Connected to GPIO5 of ESP32 Wroom.
• pin2: Connected to GND of ESP32 Wroom and ENS220 evaluation kit.

Resistor (1k Ohms)

• pin1: Connected to CS of ENS220 evaluation kit.
• pin2: Connected to pin1 of another 1k Ohm resistor.

Resistor (180 Ohms)

• pin1: Connected to SDA of ENS220 evaluation kit and GPIO19 of ESP32 Wroom.
• pin2: Connected to GPIO23 of ESP32 Wroom.

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 components are described in detail, and the wiring connections are clearly outlined to ensure proper assembly and functionality of the circuit.