ESP32 Hall Effect Magnet Detector Kit with ESP32 + LED
ESP32 Hall Effect Magnet Detector Kit: Build a Magnet Field Visualizer with OLED and LEDs
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Discover invisible magnetic fields and see their strength and direction on a crisp OLED screen. This kit uses the ESP32’s built-in Hall sensor to detect magnets, lighting up LEDs as the field intensifies and showing exact readings on the display. A perfect introduction to sensors, microcontrollers, and physical computing.
What You'll Build
You’ll assemble a handheld magnet detector that instantly shows field strength in millitesla and direction (north/south) on the OLED. Two red LEDs brighten or dim in real time as you move a magnet closer or farther, giving you a visual feedback loop. Complete with a breadboard base, you’ll have a working electronic sniffer that reveals magnetic secrets in everyday objects.
What You'll Learn
- How the Hall effect works and how the ESP32’s internal Hall sensor measures magnetic flux.
- Wiring and programming an I2C OLED display to show real-time sensor data.
- Using PWM to control LED brightness based on sensor values.
- Reading analog and digital sensor inputs and mapping them to visual outputs on breadboard hardware.
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| 0.96in OLED | 1 |
| 5mm Red LED | 2 |
| 220Ω Resistor | 5 |
| 4.7kΩ Resistor | 5 |
| 400-pt Breadboard | 1 |
| M-M Wire | 15 |
| Micro USB Cable | 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 ideal for school students under ATL Tinkering Labs, CBSE Class 10-12 physics enthusiasts exploring magnetism, and first-year B.Tech ECE/EEE students wanting hands-on sensor integration. It also fits hobbyists and parents looking for a weekend project that teaches real-world electronics and microcontroller programming in a visual, engaging way.
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 your kit box to access your AI build companion trained specifically for this magnet detector project. If you prefer, you can also reach us on WhatsApp for human guidance.
Will the sensor detect all types of magnets?
The ESP32’s Hall sensor detects both north and south poles of permanent magnets and indicates field strength; it won’t detect non-magnetic metals or very weak fields beyond its range, but the OLED shows clear direction icons.
Can I see the sensor data on a computer?
Yes, the ESP32 serial monitor outputs raw Hall voltage values, and the companion code includes options to log data to your PC. The OLED remains the primary visual readout.
Is this kit suitable as a science exhibition project?
Absolutely — many students use this exact setup for CBSE/ICSE science exhibitions and Smart India Hackathon prototypes. The visual display and LED indicators make it engaging for judges.
ESP32 built-in Hall sensor detects nearby magnets. OLED shows field strength and direction.
What's in this kit
- ESP32 Dev Board
- 0.96in OLED
- 5mm Red LED x2
- 220Ω Resistors x5
- 4.7kΩ Resistors x5
- 400-pt Breadboard
- M-M Wires x15
- Micro USB Cable
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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