Circuit Documentation

Summary

This document provides a detailed overview of a circuit that integrates an Arduino Nano, a Raspberry Pi 4B, an Adafruit DRV2605L, a DFPlayer MINI, loudspeakers, servos, a PAM8403 amplifier, a vibration motor, and a toggle switch. The circuit is designed to leverage the capabilities of these components to achieve a specific functionality, which is controlled by the Arduino Nano and Raspberry Pi 4B.

Component List

1. Arduino Nano

   • Description: A small, complete, and breadboard-friendly board based on the ATmega328P.
   • Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK

2. Raspberry Pi 4B

   • Description: A powerful single-board computer with a 64-bit quad-core processor.
   • Pins: 3V3, 5V, GPIO2, GPIO3, GND, GPIO4, GPIO14, GPIO15, GPIO17, GPIO18, GPIO27, GPIO22, GPIO23, GPIO24, GPIO10, GPIO9, GPIO25, GPIO11, GPIO8, GPIO7, ID_SD, GPIO5, GPIO6, GPIO12, GPIO13, GPIO19, GPIO16, GPIO26, GPIO20, GPIO21, ID_SC, TR01_TAP, TR00_TAP, TR03_TAP, TR02_TAP, RUN, GLOBAL_EN

3. Adafruit DRV2605L

   • Description: A haptic driver for controlling vibration motors.
   • Pins: VIN, GND, SCL, SDA, IN/TRIG, OUT+, OUT-

4. DFPlayer MINI

   • Description: A small MP3 player module with a simplified output directly to the speaker.
   • Pins: VCC, BUSY, RX, USB -, TX, USB +, DAC_R, K2/ADC_KEY, DAC_L, K1/ADC_KEY, SPK1, IO 2, GND, SPK2, IO 1

5. Loudspeaker

   • Description: A device that converts electrical signals into sound.
   • Pins: pin1, pin2

6. Servo

   • Description: A motor with a feedback mechanism for precise control of angular position.
   • Pins: gnd, vcc, pulse

7. PAM8403

   • Description: A small digital amplifier board capable of driving 3W per channel.
   • Pins: 5vIN+, GND/IN-, R-INPUT, GND, L-INPUT, L-, L+, R+, R-

8. Vibration Motor

   • Description: A small motor that provides vibration feedback.
   • Pins: POS, NEG

9. Toggle Switch

   • Description: A switch that can be toggled between two states.
   • Pins: L1, COM, L2

Wiring Details

Arduino Nano

• D0/RX connected to Raspberry Pi 4B GPIO17
• GND connected to Raspberry Pi 4B GND
• 5V connected to Raspberry Pi 4B 5V

Raspberry Pi 4B

• GPIO17 connected to Arduino Nano D0/RX
• GND connected to Arduino Nano GND
• 5V connected to Arduino Nano 5V

Adafruit DRV2605L

• VIN: Not connected
• GND: Not connected
• SCL: Not connected
• SDA: Not connected
• IN/TRIG: Not connected
• OUT+: Not connected
• OUT-: Not connected

DFPlayer MINI

• VCC: Not connected
• BUSY: Not connected
• RX: Not connected
• USB -: Not connected
• TX: Not connected
• USB +: Not connected
• DAC_R: Not connected
• K2/ADC_KEY: Not connected
• DAC_L: Not connected
• K1/ADC_KEY: Not connected
• SPK1: Not connected
• IO 2: Not connected
• GND: Not connected
• SPK2: Not connected
• IO 1: Not connected

Loudspeaker

• pin1: Not connected
• pin2: Not connected

Servo

• gnd: Not connected
• vcc: Not connected
• pulse: Not connected

PAM8403

• 5vIN+: Not connected
• GND/IN-: Not connected
• R-INPUT: Not connected
• GND: Not connected
• L-INPUT: Not connected
• L-: Not connected
• L+: Not connected
• R+: Not connected
• R-: Not connected

Vibration Motor

• POS: Not connected
• NEG: Not connected

Toggle Switch

• L1: Not connected
• COM: Not connected
• L2: Not connected

Documented Code

Arduino Nano Code

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Additional Documentation

This document provides a comprehensive overview of the circuit, including the components used, their connections, and the code running on the microcontroller.