DIY Smart Laundry Bot | Arduino Rain Sensor Project to Protect Clothes

Have you ever rushed outside because of sudden rain? 🌧️👕 It’s a common problem that many households face, especially in unpredictable weather. Instead of panicking, try the Smart Laundry Bot. This Arduino rain sensor project automatically pulls the clothesline back when it starts to drizzle. As a result, your clothes stay dry with almost no effort.

Moreover, it’s a beginner-friendly build. First, you read a simple rain sensor. Next, you control a servo with clean, readable code. Finally, you combine them into a small automation that feels like a real smart-home feature.

When moisture appears on the probe, the sensor trips. Then the Arduino sends the servo to the retract position. Once the sensor dries, it returns the line for sun drying. Therefore, the system protects your laundry even in unpredictable weather.

What You Need:

• Servo MG90D 360 – moves the clothesline back and forth
• Rain Sensor – detects rain or water droplets
• Arduino Uno R3 – the brain of the system
• Jumper Wires – for connections
• Type B Cable
• Alkaline Battery AA
• Battery Holder 8 x AA

How It Works

The Smart Laundry Bot uses a simple sense → process → react cycle:

1. Rain Detection: The rain sensor monitors for water droplets.
2. Signal Processing: Once rain is detected, the Arduino processes the signal.
3. Automatic Action: The servo motor immediately pulls back the clothesline to safety.
4. Clear Weather: When the rain stops, the servo extends the clothesline back to let clothes dry in the sun.

This smart yet straightforward setup mimics the logic behind automated windows, greenhouse covers, and other smart weather systems.

📹 Watch the Full Demo Video

Here’s the Smart Laundry Bot in action.