Circuit Documentation

Summary

The circuit is designed to simulate a ghost trapped in a Ghostbuster trap trying to escape, with a sequence of events triggered by an RF remote. The sequence includes audio playback, vibration effects, LED flickering and stabilization, bargraph display animations, servo movements, and a relay-controlled pump motor. The circuit is powered by a 7V battery and uses an Arduino Mega 2560 as the main controller, interfacing with various components to create the desired effects.

Component List

Arduino Mega 2560

• Microcontroller board based on the ATmega2560
• Provides a large number of I/O pins, including PWM, digital, and analog inputs
• Features I2C communication pins and serial communication capabilities

Adafruit Bi-Color 24-Bar Bargraph w/ I2C Backpack

• A 24-segment LED bargraph display that can show red or green or a mix of both colors
• Controlled via I2C interface

LED: Two Pin (red)

• A simple red LED with an anode and cathode for basic light-emitting functionality

MKE-M11 UART Control MP3 Player Module

• An MP3 player module that can be controlled via UART to play audio tracks

Set battery (7v)

• A battery set providing a 7V power source for the circuit

LilyPad RGB LED

• An RGB LED module that can display a variety of colors by mixing red, green, and blue

Servo

• A motor capable of precise position control, typically used for steering mechanisms in RC vehicles or for controlling movement in robotics

Vibration Motor

• A small motor that provides haptic feedback or vibration effects

SparkFun Haptic Motor Driver - DRV2605L

• A driver for controlling haptic motors, providing a variety of vibration effects

DC Motor

• A simple motor that converts electrical energy into mechanical rotation

Relay module 5v-30v

• An electrically operated switch that allows controlling high power devices with low power signals

Mini bomba de Agua (Mini Water Pump)

• A small pump used for moving water, typically used in small fountains or aquariums

Resistor (200 Ohms)

• A passive two-terminal electrical component that implements electrical resistance as a circuit element

IR Receiver

• A component that receives IR signals from a remote control

Step down Buck converter

• A DC-DC converter that steps down voltage from a higher level to a lower level

Bluetooth Module

• A wireless communication module that allows for Bluetooth connectivity

Wiring Details

Arduino Mega 2560

• VIN connected to the positive terminal of the 7V battery
• GND connected to the negative terminal of the 7V battery and common ground
• 5V powers the Bluetooth module and the Adafruit Bi-Color 24-Bar Bargraph
• D21/SCL and D20/SDA for I2C communication with the Adafruit Bi-Color 24-Bar Bargraph
• D19/RX1 and D18/TX1 for UART communication with the MKE-M11 UART Control MP3 Player Module
• D0 RX0 and D1 TX0 for serial communication with the Bluetooth module
• D2 PWM connected to the IR Receiver's data pin
• D3 PWM connected to the LilyPad RGB LED's red, blue, and green pins
• D5 PWM connected to the SparkFun Haptic Motor Driver's pin 2
• D6 PWM and D7 PWM connected to the Servo's PWM pins
• D10 PWM connected to the Relay module's trigger pin
• D11 PWM and D12 PWM connected to the anodes of the red LEDs
• D13 PWM connected to the Relay module's trigger pin
• SDA and SCL connected to the SparkFun Haptic Motor Driver's pins 4 and 3, respectively

Adafruit Bi-Color 24-Bar Bargraph w/ I2C Backpack

• VDD connected to the Arduino's 5V
• GND connected to common ground
• SDA and SCL connected to the Arduino's I2C pins

LED: Two Pin (red)

• Anode connected to the Arduino's PWM pins (D11 and D12)
• Cathode connected to the 200 Ohm resistors

MKE-M11 UART Control MP3 Player Module

• 5V and GND connected to the power rail and common ground, respectively
• TX and RX connected to the Arduino's RX1 and TX1 pins

Set battery (7v)

• + connected to the Arduino's VIN and the Step down Buck converter's IN +
• - connected to common ground

LilyPad RGB LED

• R, B, G connected to the Arduino's D3 PWM pin
• + connected to the Arduino's 5V

Servo

• VCC connected to the power rail
• GND connected to common ground
• PWM connected to the Arduino's PWM pins (D6 and D7)

Vibration Motor

• POS and NEG connected to the SparkFun Haptic Motor Driver's pins 2 and 1, respectively

SparkFun Haptic Motor Driver - DRV2605L

• VCC and GND connected to the power rail and common ground, respectively
• 1 and 2 connected to the Vibration Motor's NEG and POS pins
• 3 and 4 connected to the Arduino's SCL and SDA pins

DC Motor

• Pin 1 connected to the normally closed pin of the Relay module
• Pin 2 connected to the power rail

Relay module 5v-30v

• V+ and V- connected to the power rail and common ground, respectively
• Trigger connected to the Arduino's PWM pins (D10 and D13)
• Common contact connected to the power rail
• Normally closed connected to the DC Motor's pin 1 and the Mini Water Pump's GND

Mini bomba de Agua (Mini Water Pump)

• 5V connected to the power rail
• GND connected to the normally closed pin of the Relay module

Resistor (200 Ohms)

• Pin1 connected to common ground
• Pin2 connected to the cathodes of the red LEDs

IR Receiver

• DATA connected to the Arduino's D2 PWM pin
• VCC connected to the power rail
• GND connected to common ground

Step down Buck converter

• IN + and IN - GND connected to the positive and negative terminals of the 7V battery, respectively
• OUT + and OUT - GND connected to the power rail and common ground, respectively

Bluetooth Module

• EN and VCC connected to the Arduino's 5V
• GND connected to common ground
• TXD and RXD connected to the Arduino's RX0 and TX0 pins

Documented Code

/*
 * Ghostbuster Trap Prop Simulation
 * This code simulates a ghost trapped in a Ghostbuster trap trying to escape
 * and power failure and then stabilization at the end.
 * The sequence is triggered by an RF remote and includes the following:
 * - MP3 player tracks
 * - Vibration with haptic driver and DC motors
 * - Flickering LEDs, that then one turns solid and the other blinks at 1 per second
 * - Bargraph display
 * - Servo movements
 * - Relay-controlled pump motor
 */

#include <SoftWire.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_LEDBackpack.h>
#include <Servo.h>
#include <DFPlayer_Mini_Mp3.h>

// Pin definitions
SoftWire I2cbus1(44,45);
SoftWire I2cbus2(46,47);
#define VIBRATION_MOTOR_PIN 5
#define DC_MOTOR_PIN 10
#define LED1_PIN 11
#define LED2_PIN 12
#define RELAY_PIN 13
#define SERVO1_PIN 6
#define SERVO2_PIN 7
#define RF_REMOTE_PIN 2

// Components
Adafruit_24bargraph bargraph = Adafruit_24bargraph();
Servo servo1;
Servo servo2;

void setup() {
  // Initialize components
  I2cbus1.begin();
  I2cbus2.begin();
  pinMode(VIBRATION_MOTOR_PIN, OUTPUT);
  pinMode(DC_MOTOR_PIN, OUTPUT);
  pinMode(LED1_PIN, OUTPUT);
  pinMode(LED2_PIN, OUTPUT);
  pinMode(RELAY_PIN, OUTPUT);
  pinMode(RF_REMOTE_PIN, INPUT);
  servo1.attach(SERVO1_PIN);
  servo2.attach(SERVO2_PIN);
  bargraph.begin(0x70);
  mp3_set_serial(Serial1);
  mp3_set_volume(20);
}

void loop() {
  if (digitalRead(RF_REMOTE_PIN) == HIGH)