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Laundry Detergent Level Monitor Kit with Arduino Uno + Ultrasonic
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Laundry Detergent Level Monitor Kit with Arduino Uno + Ultrasonic

SKU: CDN-KIT-0283-CL Brand: Compoden Category: Electronics > Home Automation > Project Kits
Rs. 1,360.00
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Laundry Detergent Level Monitor Kit with Arduino Uno & Ultrasonic Sensor — Get Alerts Before Detergent Runs Out

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Difficulty: Intermediate Build Time: 3-4 Hours Age: 15-18 Skill: Non-contact ultrasonic liquid level sensing

Running out of detergent mid-laundry is a common frustration in busy Indian households and hostels. This kit transforms a standard detergent drum into a smart container that shows the remaining level as a percentage on an OLED display and sounds an alert when the detergent drops below 20%. You’ll build a reliable, battery-powered monitor using an Arduino Uno and an HC-SR04 ultrasonic sensor — no plumbing or modifications to the drum required.

What You'll Build

You’ll create a compact sensor unit that mounts under the detergent drum’s lid. The HC-SR04 fires ultrasonic pulses down toward the liquid surface and measures the echo time to calculate the remaining detergent volume. The OLED displays a clear percentage, and when the level falls below 20%, a loud active buzzer alerts anyone in the room. The whole system runs on a single 9V battery for quick deployment.

What You'll Learn

  • Calibrating an HC-SR04 ultrasonic sensor to convert distance into liquid percentage
  • Programming Arduino Uno to drive a 0.96-inch OLED display via I2C
  • Implementing threshold-based alerts with an active buzzer
  • Building and testing a breadboard prototype with 10kΩ pull-up resistors and filtering capacitors

Kit Contents

HC-SR04 in detergent drum measures remaining level. OLED shows percentage and alerts when below 20%.

What's in this kit

Component Quantity
Arduino Uno R3 1
HC-SR04 1

Shipping Information

  • Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
  • COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
  • Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location

Returns & Warranty

  • 7-Day Return: Manufacturing defects only (approval required)
  • Warranty: 7 days from delivery
  • Non-Returnable: Batteries, consumables, cut wires, clearance items

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