Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP32 microcontroller, a 16x2 I2C LCD, an encoder, a push button, and a USB power source. The circuit is designed to interface these components for various functionalities, including display, input, and power management.

Component List

1. ESP32

   • 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, 3V3, D15, D2, D4, RX2, TX2, D5, D18, D19, D21, RX0, TX0, D22, D23, BOOT

2. 16x2 I2C LCD

   • Description: A 16x2 character LCD display with I2C interface.
   • Pins: GND, VCC, SDA, SCL

3. Encoder

   • Description: A rotary encoder for input.
   • Pins: Phase A, VCC, Phase B, GND

4. Push Button Round

   • Description: A simple push button for user input.
   • Pins: leg0, leg1

5. USB Power

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

Wiring Details

ESP32

• GND is connected to:

  • GND of 16x2 I2C LCD
  • leg1 of Push Button Round
  • • of USB Power
  • GND of Encoder

• VIN is connected to:

  • VCC of 16x2 I2C LCD
  • • of USB Power

• 3V3 is connected to:

  • VCC of Encoder

• RX2 is connected to:

  • Phase B of Encoder

• TX2 is connected to:

  • Phase A of Encoder

• D21 is connected to:

  • SCL of 16x2 I2C LCD

• RX0 is connected to:

  • leg0 of Push Button Round

• D22 is connected to:

  • SDA of 16x2 I2C LCD

16x2 I2C LCD

• GND is connected to:

  • GND of ESP32

• VCC is connected to:

  • VIN of ESP32
  • • of USB Power

• SDA is connected to:

  • D22 of ESP32

• SCL is connected to:

  • D21 of ESP32

Encoder

• Phase A is connected to:

  • TX2 of ESP32

• VCC is connected to:

  • 3V3 of ESP32

• Phase B is connected to:

  • RX2 of ESP32

• GND is connected to:

  • GND of ESP32
  • • of USB Power
  • leg1 of Push Button Round

Push Button Round

• leg0 is connected to:

  • RX0 of ESP32

• leg1 is connected to:

  • GND of ESP32
  • • of USB Power
  • GND of Encoder

USB Power

• + is connected to:

  • VIN of ESP32
  • VCC of 16x2 I2C LCD

• - is connected to:

  • GND of ESP32
  • leg1 of Push Button Round
  • GND of Encoder

Code

There is no code provided for the microcontrollers in this circuit.

This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and code documentation. The wiring details ensure that each component is correctly connected to the ESP32 microcontroller and other components in the circuit.