What if your wardrobe could find your shirt for you? 🧥
Meet the Smart Wardrobe Bot — scan a tag, and the right shelf glows and slides open all by itself, showing off exactly the shirt you're looking for!
🧠 What Are We Building?
The Smart Wardrobe Bot is a mini smart closet that knows exactly where your clothes are. Every shirt gets a tiny RFID tag sewn or clipped onto its collar. When you scan a tag near the wardrobe's reader, the robot checks which shirt it is, lights up an LED right where that shirt sits, shows its name on a tiny OLED screen, and — for the big reveal — a motorized shelf slides out automatically to present it to you!
This project introduces real robotics ideas like RFID identification, motor control with limit switches, addressable LEDs, and small displays — all wrapped inside the coolest closet on the block.
🧰 Components Required
Everything you need, with approximate India pricing
| Component | Quantity | Approx. Price (INR) |
|---|---|---|
| Arduino Uno R3 | 1 | ₹550 |
| MFRC522 RFID Reader Module + 3 RFID Tags | 1 set | ₹180 |
| L298N Motor Driver Module | 1 | ₹120 |
| 12V DC Geared Motor (with pulley/rack) | 1 | ₹250 |
| WS2812 Addressable Mini LED Strip (8 LEDs) | 1 | ₹150 |
| 0.96" OLED Display (I2C, SSD1306) | 1 | ₹220 |
| Micro Limit Switch | 2 | ₹30 |
| Push Button | 1 | ₹10 |
| Buzzer (5V) | 1 | ₹20 |
| Breadboard | 1 | ₹90 |
| Jumper Wires (M-M, M-F) | 1 set | ₹99 |
| 12V Power Adapter / Battery Pack (for motor) | 1 | ₹150 |
| Nylon String or Drawer Slide Rail | 1 | ₹150 |
| Cardboard / Thin Plywood (mini wardrobe model) | 1 set | ₹300 |
💡 Source electronics from Robocraze, Flyrobo, or Robu.in. Wood/cardboard and drawer rails are available at any hardware or craft store.
🔌 Circuit Diagram
How everything connects to the Arduino Uno
📌 Pin Connection Table
| Component | Pin on Component | Arduino Pin |
|---|---|---|
| MFRC522 RFID Reader | SDA (SS) | D10 |
| MFRC522 RFID Reader | SCK | D13 |
| MFRC522 RFID Reader | MOSI | D11 |
| MFRC522 RFID Reader | MISO | D12 |
| MFRC522 RFID Reader | RST | D9 |
| MFRC522 RFID Reader | VCC | 3.3V (NOT 5V) |
| L298N Motor Driver | IN1 | D5 |
| L298N Motor Driver | IN2 | D6 |
| L298N Motor Driver | ENA | D3 (PWM) |
| Limit Switch (Open) | Signal | D7 |
| Limit Switch (Close) | Signal | D8 |
| WS2812 LED Strip | Data In | D4 |
| Push Button | One leg | D2 (other leg to GND) |
| Buzzer | + | A0 |
| OLED SSD1306 | SDA / SCL | A4 / A5 |
🛠️ Step-by-Step Build Guide
Build the Mini Wardrobe Frame
Cut a small wardrobe body from cardboard or thin plywood, about the size of a shoebox stood upright. Install a simple drawer slide rail so one shelf can move smoothly in and out.
Tag the Shirts
Stick or sew one RFID tag onto the inside collar of each shirt. Note down which tag belongs to which shirt — you'll need this for the code.
Mount the Motor & Slide Mechanism
Attach the DC geared motor to the drawer rail using a pulley and nylon string (or a rack-and-pinion strip). Fix the two limit switches at the fully-open and fully-closed ends of the rail.
Add the LED Strip & OLED
Run the WS2812 LED strip along the top of the shelf, with one LED positioned above each shirt. Mount the OLED screen on the front panel where it's easy to read.
Wire the Circuit
Connect the RFID reader, motor driver, limit switches, LED strip, OLED, button, and buzzer to the Arduino exactly as shown in the circuit diagram and pin table above. Keep the RFID reader on 3.3V only!
Upload the Code
Install the MFRC522, Adafruit_NeoPixel, Adafruit_GFX, and Adafruit_SSD1306 libraries in the Arduino IDE. Update the code with your own tag UIDs, then upload the sketch below.
Scan & Reveal!
Hold a tagged shirt's collar near the RFID reader. Watch the OLED show its name, the matching LED glow, and the shelf slide open automatically to reveal it! Press the button anytime to close the shelf.
💻 Arduino Code
Upload this sketch using the Arduino IDE (after installing the required libraries)
// Smart Wardrobe Bot - MakeMindz Robotics Project #include <SPI.h> #include <MFRC522.h> #include <Adafruit_NeoPixel.h> #include <Adafruit_GFX.h> #include <Adafruit_SSD1306.h> #define RST_PIN 9 #define SS_PIN 10 #define LED_PIN 4 #define NUM_LEDS 3 #define BUZZER A0 #define BUTTON 2 #define IN1 5 #define IN2 6 #define ENA 3 #define OPEN_SW 7 #define CLOSE_SW 8 MFRC522 rfid(SS_PIN, RST_PIN); Adafruit_NeoPixel strip(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800); Adafruit_SSD1306 display(128, 64, &Wire, -1); // Replace these with YOUR tag UIDs (check Serial Monitor to find them) byte shirtTags[3][4] = { {0x12, 0x34, 0x56, 0x78}, // Blue Shirt {0x9A, 0xBC, 0xDE, 0xF0}, // Red Shirt {0x11, 0x22, 0x33, 0x44} // Green Shirt }; String shirtNames[3] = {"Blue Shirt", "Red Shirt", "Green Shirt"}; void setup() { Serial.begin(9600); SPI.begin(); rfid.PCD_Init(); strip.begin(); strip.show(); display.begin(SSD1306_SWITCHCAPVCC, 0x3C); display.clearDisplay(); showMessage("Scan a Shirt!"); pinMode(IN1, OUTPUT); pinMode(IN2, OUTPUT); pinMode(ENA, OUTPUT); pinMode(OPEN_SW, INPUT_PULLUP); pinMode(CLOSE_SW, INPUT_PULLUP); pinMode(BUTTON, INPUT_PULLUP); pinMode(BUZZER, OUTPUT); } void loop() { if (digitalRead(BUTTON) == LOW) { closeShelf(); } if (!rfid.PICC_IsNewCardPresent() || !rfid.PICC_ReadCardSerial()) return; int match = -1; for (int i = 0; i < 3; i++) { if (compareUID(rfid.uid.uidByte, shirtTags[i])) { match = i; break; } } if (match >= 0) { showMessage("Found: " + shirtNames[match]); highlightLED(match); tone(BUZZER, 1200, 300); openShelf(); } else { showMessage("Unknown Item"); } rfid.PICC_HaltA(); } bool compareUID(byte* uid, byte* known) { for (int i = 0; i < 4; i++) { if (uid[i] != known[i]) return false; } return true; } void highlightLED(int index) { strip.clear(); strip.setPixelColor(index, strip.Color(0, 255, 200)); strip.show(); } void showMessage(String msg) { display.clearDisplay(); display.setTextSize(1); display.setTextColor(SSD1306_WHITE); display.setCursor(0, 25); display.println(msg); display.display(); } void openShelf() { digitalWrite(IN1, HIGH); digitalWrite(IN2, LOW); analogWrite(ENA, 180); while (digitalRead(OPEN_SW) == HIGH) { // keep moving until switch triggers delay(10); } stopMotor(); } void closeShelf() { digitalWrite(IN1, LOW); digitalWrite(IN2, HIGH); analogWrite(ENA, 180); while (digitalRead(CLOSE_SW) == HIGH) { delay(10); } stopMotor(); strip.clear(); strip.show(); showMessage("Scan a Shirt!"); } void stopMotor() { digitalWrite(IN1, LOW); digitalWrite(IN2, LOW); analogWrite(ENA, 0); }
⚙️ How It Works
When you hold a tagged shirt near the RFID reader, the Arduino reads its unique ID and compares it against the list of known shirts. If it finds a match, it shows the shirt's name on the OLED screen, lights up the matching LED, plays a happy beep, and drives the DC motor forward until the open limit switch is triggered — sliding the shelf out automatically. Press the button whenever you're done, and the motor reverses until the close limit switch stops it, tucking the shelf neatly back in.
❓ Frequently Asked Questions
Upload the standard MFRC522 "DumpInfo" example sketch, open the Serial Monitor, and scan each tag. It will print the UID bytes you need to enter into the code.
Yes! Swap the push button for a small voice recognition module (like an Elechouse VR3) connected over serial. Train it to recognize a word like "close", and call the closeShelf() function when that command is detected.
The MFRC522 module's chip is only rated for 3.3V logic. Connecting it to 5V can permanently damage the reader, so always use the Arduino's 3.3V pin for power.
Double-check that your limit switches are positioned exactly at the fully-open and fully-closed points, and that they're wired with INPUT_PULLUP so they read LOW when pressed.
Absolutely! Just add more UID entries to the shirtTags array, more names to shirtNames, and more LEDs to your strip — updating NUM_LEDS to match.
🚀 Upgrade Ideas
🗣️ Full Voice Assistant
Add a voice module so you can simply say a shirt's name — "Find my blue shirt!" — and skip the RFID scan entirely.
📱 Mobile App Control
Add an HC-05 Bluetooth module so you can open your wardrobe and see which shirt is where, right from your phone.
🧺 Laundry Reminder
Track how many times a shirt is scanned, and show a friendly OLED reminder like "Time for a wash!" after several wears.
🪞 Multi-Shelf Version
Add a second motor and limit switch pair to control multiple shelves — one for shirts, one for pants!
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