Magnetic Field Visualiser Kit with Arduino Mega + Sensor Maker 2
Magnetic Field Visualiser Kit with Arduino Mega – Map Magnetic Fields from Motors & Magnets on a TFT Heatmap
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Make the invisible visible. This kit lets you construct a portable magnetic field scanner that converts Hall effect sensor readings into a real‑time colour heatmap on a 1.8‑inch TFT screen. Pass a DC motor, a solenoid coil or a stack of permanent magnets over the sensor grid, and instantly see flux density patterns — an invaluable tool for understanding electromagnetism, debugging motor assemblies, or impressing judges at a science fair.
What You'll Build
You’ll solder eight A3144 Hall sensors onto three prototyping boards, wire four 74HC4051 multiplexers to read them sequentially, and upload an Arduino sketch that drives the ST7735 TFT display. The final device fits in your palm, runs on a 9V battery, and renders a vivid 8‑point heatmap that updates as you move magnetic objects over the sensing area.
What You'll Learn
- Through‑hole soldering and board‑level wiring with real components
- Reading analog signals from multiple sensors using multiplexer ICs
- Coding an Arduino Mega to interface a TFT colour display
- Mapping sensor data to a visual heatmap and interpreting magnetic field distribution
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | ×1 |
| A3144 Hall Sensor | ×8 |
| 74HC4051 Multiplexer IC | ×4 |
| 1.8in TFT ST7735 Display | ×1 |
| 10kΩ Resistors | ×15 |
| 100nF Ceramic Capacitors | ×10 |
| PCB Prototype Board | ×3 |
| 9V Battery Snap with DC Jack | ×1 |
| Soldering Iron (25W) | ×1 |
| Solder Wire (lead‑free) | ×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
Designed for intermediate makers aged 15–18 with soldering experience and basic Arduino know‑how. Ideal for CBSE Class 12 Physics practicals, B.Tech ECE/EEE mini‑projects, Smart India Hackathon teams, and ATL Tinkering Lab activities. IIT, NIT, VIT and BITS freshers will appreciate the hands‑on multiplexing and data visualisation challenge that bridges hardware and software.
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 talk to the AI companion, trained on this kit’s exact wiring and code. You can also send a photo via WhatsApp for direct human help from our Bengaluru team.
Can I expand the sensor grid?
Yes, the guide explains how to add more Hall sensors and multiplexers to create a larger array; the included sketch is modular.
Does the kit include everything for soldering?
Absolutely — a 25W soldering iron and lead‑free solder wire are inside, so you can start building immediately.
Is the TFT display pre‑programmed?
No, you’ll upload the Arduino code yourself, which teaches you display programming. Full, commented code and wiring diagrams are included.
8x8 array of Hall sensors maps magnetic field of motors, solenoids and magnets on TFT heatmap.
What's in this kit
- Arduino Mega 2560
- A3144 Hall Sensor x8
- 74HC4051 Mux x4
- 1.8in TFT ST7735
- 10kΩ Resistors x15
- 100nF Caps x10
- PCB Prototype Board x3
- 9V Battery Snap
- Soldering Iron
- Solder Wire
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.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
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