Electromagnetic Force vs Distance Kit with Arduino Uno + Relay
Electromagnetic Force vs Distance Kit with Arduino Uno – Prove the Inverse Square Law with Real Data
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Ever wondered how electromagnetic force weakens as distance increases? This kit lets you build a precision force measurement rig using a load cell and electromagnet, controlled by an Arduino Uno. You'll collect data at precise distances, then plot the curve to see the inverse square law in action—just like a real physics lab, but on your desk.
What You'll Build
A calibrated load cell system that measures the pull force between a 12V electromagnet and an iron object. With the 16x2 LCD, you'll read force in real time, adjust the distance with spacers, and log measurements to verify the inverse square relationship. Perfect for CBSE Class 12 physics practicals or engineering lab demonstrations.
What You'll Learn
- Calibrating a load cell with HX711 and Arduino for precision measurements
- Using a relay module to safely control a high‑current electromagnet
- Interfacing an I2C LCD to display real‑time force readings
- Applying the inverse square law through experimental data collection and graphing
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| HX711 + 1kg Load Cell | 1 |
| Electromagnet 12V | 1 |
| 5V Relay Module | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| 10kΩ Resistors | 5 |
| 100nF Caps | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 12V Adapter | 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
If you're a CBSE Class 11-12 student struggling to demonstrate the inverse square law with a spring balance, or a B.Tech ECE/EEE student needing a quick sensors project, this kit gives you a professional-grade setup without hunting for rare parts. It's also ideal for ATL Tinkering Lab facilitators and Smart India Hackathon participants who need a ready-made experiment on electromagnetism.
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 to access the AI companion for instant debugging, or reach out via WhatsApp for guided help from a project engineer.
Do I need to write code from scratch?
No—the kit includes pre-written Arduino sketches and wiring diagrams; the AI companion can also modify or debug any code errors on the spot.
Can I power the electromagnet directly from the Arduino?
Absolutely not. The 12V electromagnet draws high current. The included relay module and adapter isolate it safely, with the Arduino only handling low-power control signals.
How do I measure distance accurately for the inverse square plot?
Use a ruler or spacers (easily available in school labs) to set consistent gaps. The AI companion guides calibration and suggests multiple data points for a smooth curve.
Load cell measures force between electromagnet and iron at distances. Plots inverse square law.
What's in this kit
- Arduino Uno R3
- HX711 + 1kg Load Cell
- Electromagnet 12V
- 5V Relay Module
- 16x2 LCD
- I2C Backpack
- 10kΩ Resistors x5
- 100nF Caps x5
- 400-pt Breadboard
- M-M Wires x20
- 12V Adapter
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