Nano Fishfinder Depth Sonar Kit with Arduino Nano + Ultrasonic
See the Unseen: Arduino Nano Fishfinder Depth Sonar Kit with Waterproof Ultrasonic
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Lower a waterproof sensor from the side of a boat—or even the edge of a bucket—and watch a bright OLED screen instantly show you the exact depth below. This kit turns a simple Arduino Nano into a precision sonar tool that mimics how real marine fishfinders work. You’ll assemble every piece yourself, from soldering components onto a prototype board to mounting everything inside a sealed enclosure that can handle splashes and immersion. It’s a hands-on way to explore sound reflection, microcontrollers, and display programming in a single afternoon.
What You'll Build
A battery-powered, portable depth ruler that shows ultrasonic readings in centimetres on a crisp 0.96-inch OLED. The HC-SR04’s waterproof transducer sends sound pulses through water and listens for the echo; the Nano converts that time delay into a precise distance. Once assembled, you can calibrate it against a tape measure, test it in a tub, or mount it on a model boat hull for science fair demonstrations. The enclosed electronics survive accidental splashes, so outdoor trials by a lake or pond become part of the experiment.
What You'll Learn
- Connecting and coding an HC-SR04 waterproof ultrasonic sensor with Arduino Nano
- Displaying live numeric data on a 0.96-inch OLED using I2C communication
- Protecting circuits from water damage using a pre-cut waterproof enclosure and cable glands
- Basic soldering and PCB assembly to create a rugged, permanent project
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| HC-SR04 Waterproof | 1 |
| 0.96in OLED | 1 |
| 10kΩ Resistors | 5 |
| 4.7kΩ Resistors | 5 |
| PCB Prototype Board | 2 |
| Waterproof Enclosure | 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
Perfect for ATL Tinkering Lab students, school STEM clubs, and young hobbyists preparing for science exhibitions. The beginner-friendly assembly suits CBSE Class 6–9 projects, while hobbyists as young as 10 can complete it with an adult supervising the soldering steps. Even undergraduates in B.Tech ECE searching for a quick instrumentation prototype will appreciate the ready-to-build sonar concept. If you’ve ever wondered how boats “see” the bottom, this kit makes that principle tangible and fun.
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?
Scan the QR code on the box to talk to an AI companion that knows this exact fishfinder circuit. If you still need help, we’re available on WhatsApp to troubleshoot live.
Do I need a real boat to try this kit?
Not at all. You can test the sensor in a bucket, a bathtub, or a shallow pool—the ultrasonic principle works the same way. Just make sure the waterproof transducer is submerged while the enclosure stays dry.
Is the soldering safe for a 10-year-old?
The soldering iron heats quickly; we recommend an adult handles the soldering or closely supervises. The included solder wire is lead-free and the iron has a stand for safety. It’s a controlled way to learn a lifelong skill.
Can I later add a buzzer or wireless output?
Definitely. The prototype board gives you extra space, and the Nano has free pins. You can expand with a piezo buzzer for audible depth alerts or a Bluetooth module to send readings to a phone. Many students customise it further for science fair projects.
HC-SR04 waterproof ultrasonic measures water depth from boat hull. Nano shows depth on OLED.
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.
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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