Etch-a-Sketch Digital Display Variant 22 Kit with Arduino Uno
Recreate the Classic Etch-a-Sketch on Arduino with TFT Display and Dual Encoders
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
With this advanced kit, you’ll construct a fully functional digital Etch-a-Sketch that draws smooth, real-time lines on a vivid 2.4-inch TFT screen using two precise rotary encoders. Press the button and watch the screen produce a simulated shake effect before clearing your sketch, just like the iconic mechanical toy but now in a compact, programmable form. Ideal for exhibitions, hackathons, and portfolio pieces, the finished unit becomes a conversation-starting piece of interactive art.
What You'll Build
A handheld drawing device that interprets encoder movements into cumulative X-Y paths, rendering them on an ILI9341 color display without lag. The clear button triggers a rapid screen shake animation, then erases the canvas—ready for your next doodle. You’ll walk away with a polished, original gadget that doubles as an embedded systems demo and a retro-inspired sketch tool.
What You'll Learn
- Polling dual rotary encoders with interrupt‑driven routines to guarantee no missed steps
- Drawing and selectively updating pixels on the ILI9341 TFT using the SPI interface and high‑performance libraries
- Implementing a non‑blocking shake algorithm that animates a screen clear without halting encoder input
- Stabilizing power with 100nF decoupling capacitors and pull‑up/down resistor networks for noise‑free operation
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| Rotary Encoder | 2 |
| 2.4in TFT ILI9341 | 1 |
| Tactile Button | 2 |
| 10kΩ Resistors | 10 |
| 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 maker designed for B.Tech ECE and EEE students tackling embedded systems assignments, Smart India Hackathon participants seeking an interactive display project, and college innovation club members who want a soldering‑heavy, code‑intensive build. If you’ve already worked with Arduino basics and crave a tangible, display‑driven challenge, this kit delivers exactly the right complexity.
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 box’s QR code to chat with the AI companion trained on this exact Etch-a-Sketch build. It will walk you through wiring, code, and troubleshooting. For human help, our WhatsApp line responds within a few hours.
Do I need prior experience with TFT displays and rotary encoders?
Some Arduino familiarity is assumed, but the companion provides detailed pinouts, library setup, and example sketches. You’ll learn the specifics hands‑on during the build.
Can I use this kit for college project submissions?
Absolutely. You’ll receive comprehensive documentation, circuit diagrams, and original code that meet university requirements. The shake effect adds a unique demonstration element.
How is the shake effect achieved without physical mechanics?
The clear button triggers a software animation that rapidly offsets and re‑draws the screen content several times, then blanks the display. It’s a purely visual simulation of the classic eraser motion.
Two rotary encoders move X and Y axes on TFT to draw. Button clears screen with shake shake effect.
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.
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