Automatic Soap Dispenser Kit with Arduino Uno + Sensor
Build a Touchless Soap Dispenser with Arduino Uno & IR Sensor
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform your hygiene routine with a contactless soap dispenser you build and program yourself. Using an IR proximity sensor, this kit triggers a precise peristaltic pump dose every time your hand is detected beneath the nozzle. The dosage volume is fully adjustable from a gentle trickle to a generous squirt via the onboard potentiometer, making it ideal for dorm rooms, shared labs, or any high-traffic wash area.
What You'll Build
A fully automatic soap dispenser that senses your hand from up to 10 cm away and dispenses a measured amount of liquid soap, sanitizer, or lotion. The device works from a 9V battery, mounts to any wall or stand, and uses a refillable reservoir — all controlled by an Arduino Uno running code you write and understand.
What You'll Learn
- How to interface an IR proximity sensor and calibrate detection range
- Controlling a peristaltic pump via relay for precise fluid delivery
- Using a potentiometer as an analog input to adjust pump on-time dynamically
- Writing Arduino code that integrates sensor triggers, timed outputs, and user-adjustable settings
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| IR Proximity Sensor | 1 |
| 5V Relay Module | 1 |
| Mini Peristaltic Pump | 1 |
| 10kΩ Potentiometer | 1 |
| 1N4007 Diode | 5 |
| 10kΩ Resistors | 5 |
| 100nF Caps | 5 |
| PCB Prototype Board | 1 |
| Silicone Tube | 1 |
| 9V Battery Snap | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is designed for B.Tech ECE and EEE students prototyping home automation projects for Smart India Hackathon or their major semester project. It’s also a perfect challenge for tinkerers at campus innovation labs, ATL mentors guiding advanced students, and anyone preparing for recruitment technical rounds that demand sensor-actuator integration.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Our AI companion, accessed via the kit’s QR code, provides instant debugging specific to this project. You can also reach us on WhatsApp for human support within hours.
Can I use this dispenser for hand sanitizer instead of soap?
Yes, the peristaltic pump handles low-viscosity liquids well. Use the potentiometer to reduce dosage for thinner sanitizer.
Does the kit include a container for the soap?
The kit supplies a silicone tube you attach to your own refillable bottle; we recommend a 500ml bottle for days of hands-free use.
Will this project help me in placement interviews?
Absolutely. Demonstrating an end-to-end embedded system with sensor, actuator, and user adjustment shows hands-on Arduino programming and relay control — concepts commonly tested in IoT and embedded roles.
IR sensor detects hand. Mini peristaltic pump dispenses measured dose. Dosage adjustable via potentiometer.
What's in this kit
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Other projects you can build
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