Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP32 microcontroller, an MPU-6050 accelerometer and gyroscope, a DFPlayer MINI MP3 player, a loudspeaker, and a 3.7V LiPo battery. The circuit is designed to interface these components to achieve a specific functionality, which is not detailed in the provided information.

Component List

1. 3.7V LiPo Battery

   • Pins: +Ve, GND
   • Description: A rechargeable lithium polymer battery providing power to the circuit.
   • Purpose in Circuit: Power supply.

2. ESP32

   • 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
   • Description: A powerful microcontroller with Wi-Fi and Bluetooth capabilities.
   • Purpose in Circuit: Main controller.

3. MPU-6050

   • Pins: VCC, GND, SCL, SDA, XDA, XCL, AD0, INT
   • Description: A 6-axis motion tracking device combining a 3-axis gyroscope and a 3-axis accelerometer.
   • Purpose in Circuit: Motion sensing.

4. DFPlayer MINI

   • Pins: VCC, BUSY, RX, USB -, TX, USB +, DAC_R, K2/ADC_KEY, DAC_L, K1/ADC_KEY, SPK1, IO 2, GND, SPK2, IO 1
   • Description: A small MP3 player module that can be controlled via serial communication.
   • Purpose in Circuit: Audio playback.

5. Loudspeaker

   • Pins: pin1, pin2
   • Description: A speaker for audio output.
   • Purpose in Circuit: Sound output.

Wiring Details

3.7V LiPo Battery

• +Ve is connected to:

  • VIN of ESP32
  • VCC of DFPlayer MINI

• GND is connected to:

  • GND of ESP32
  • GND of DFPlayer MINI

ESP32

• 3V3 is connected to:

  • VCC of MPU-6050

• GND is connected to:

  • GND of MPU-6050
  • GND of 3.7V LiPo Battery
  • GND of DFPlayer MINI

• D22 is connected to:

  • SCL of MPU-6050

• D21 is connected to:

  • SDA of MPU-6050

• VIN is connected to:

  • +Ve of 3.7V LiPo Battery
  • VCC of DFPlayer MINI

• RX2 is connected to:

  • TX of DFPlayer MINI

• TX2 is connected to:

  • RX of DFPlayer MINI

MPU-6050

• VCC is connected to:

  • 3V3 of ESP32

• GND is connected to:

  • GND of ESP32

• SCL is connected to:

  • D22 of ESP32

• SDA is connected to:

  • D21 of ESP32

DFPlayer MINI

• VCC is connected to:

  • VIN of ESP32
  • +Ve of 3.7V LiPo Battery

• GND is connected to:

  • GND of ESP32
  • GND of 3.7V LiPo Battery

• TX is connected to:

  • RX2 of ESP32

• RX is connected to:

  • TX2 of ESP32

• SPK1 is connected to:

  • pin2 of Loudspeaker

• SPK2 is connected to:

  • pin1 of Loudspeaker

Loudspeaker

• pin1 is connected to:

  • SPK2 of DFPlayer MINI

• pin2 is connected to:

  • SPK1 of DFPlayer MINI

Code

No code was provided for the microcontrollers in this circuit.