Real-Time Oscilloscope on 2.4in TFT Kit with Arduino Mega
Build a Portable Real-Time Oscilloscope with Arduino Mega and 2.4in TFT Display
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 an Arduino Mega and a sharp TFT display into a fully functional oscilloscope that captures and plots live audio or analog waveforms. Adjust trigger level and sweep timebase in real time to analyze signals like a professional instrument, all from a compact self-contained unit. This kit turns a microcontroller into a test tool you can use for audio debugging, sensor characterization, or classroom signal-analysis labs.
What You'll Build
A portable, battery-powered oscilloscope with a 2.4-inch color TFT screen that renders waveforms from a microphone or any 0-5V analog source. Two knobs let you tweak trigger threshold and time/div for stable traces, while tactile buttons offer snapshot and mode switching. By the end, you'll hold a custom instrument that can be packed into a 3D-printed case and carried anywhere.
What You'll Learn
- High-speed ADC sampling and circular buffering on Arduino Mega
- Interfacing ILI9341 TFT with optimized graphics libraries for real-time plotting
- Implementing signal triggering and timebase control using interrupts and timers
- Building analog front-end circuits with the MAX9814 microphone amplifier
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | 1 |
| MAX9814 Mic Amp | 1 |
| 2.4in TFT ILI9341 | 1 |
| 10kΩ Potentiometer | 2 |
| Tactile Button | 2 |
| 10kΩ Resistors | 5 |
| 100nF Caps | 5 |
| PCB Prototype Board | 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
Advanced undergraduate engineering students prototyping for Smart India Hackathon hardware tracks or final-year B.Tech ECE/EEE projects. Ideal for IIT, NIT, VIT, BITS Pilani candidates building embedded test gear. Also suits experienced hobbyists wanting a custom portable oscilloscope for their workbench.
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?
The AI companion, trained on this exact project, guides you through every step. If you need human help, drop a message on WhatsApp and we'll respond within hours.
Can I use this kit to display signals from a function generator?
Yes. The analog input channel accepts any 0-5V signal. Simply connect your generator's output to the input pin, and you'll see the waveform with the trigger and timebase you set.
Does the soldering iron come with a stand and tip?
The included soldering iron is a basic 25W pencil type; we recommend using a holder (not included) for safety. If you're new to soldering, the AI companion has a quick practice guide.
What is the maximum update rate of the display?
With optimized code, you can achieve up to 10 frames per second for a 320-pixel-wide trace, limited by the ILI9341 SPI speed and ADC sampling rate. The kit's software demonstrates how to balance performance.
MAX9814 mic or analog input displayed as live waveform on 2.4in ILI9341 TFT with trigger and timebase controls.
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