Coin Flip Probability Tally Kit - Arduino Uno & OLED
See Probability Come Alive - Coin Flip Tally Kit with Arduino Uno & OLED
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This child-friendly kit transforms an abstract maths concept into a colourful, button-operated display. Press the tactile button to simulate a coin toss, watch the OLED instantly update the running tally of heads and tails, and observe how the law of large numbers pulls the probability closer to 50:50 with every new flip. It's a hands-on gateway to randomness, coding, and statistical thinking - all on a solderless breadboard.
What You'll Build
You'll wire up a coin-flip simulator using an Arduino Uno R3, a single tactile button, and a crisp 0.96-inch OLED. Each press triggers a pseudo-random outcome, which the Arduino logs and displays as a live count. A running percentage for heads and tails makes convergence visible, turning a few hundred flips into a dramatic illustration of how probability behaves in the real world.
What You'll Learn
- How to simulate randomness with Arduino's pseudo-random functions and a physical trigger
- Wiring and programming an I2C OLED display to show dynamic data
- Why the law of large numbers makes probability converge - and how to see it happen
- Core electronics skills: pull-up resistors, breadboard connections, and simple circuit design
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| Tactile Button | 1 |
| 0.96in OLED | 1 |
| 10k? Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 15 |
| 9V Battery Snap | 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
Perfect for CBSE Class 6-12 students who need to visualise probability for maths or computer science projects. ATL Tinkering Labs can use it as a ready-to-run STEM activity, and B.Tech first-year learners get a quick, confidence-building intro to embedded displays. Even parents looking for a weekend electronics gift will appreciate how quickly a child can go from unboxing to counting flips.
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 inside the box to start a chat with your AI companion, which knows every wire, line of code, and troubleshooting step for this kit. WhatsApp and email support are also available, and you can share photos of your setup for direct guidance.
Can I change the code to simulate a dice instead of a coin?
Absolutely. The AI companion includes modified sketches that change the random range and OLED layout for a six-sided die or other probabilities, perfect for extending the project once the basic build is working.
Does this kit require soldering?
No soldering at all - everything plugs into the breadboard using male-to-male jumper wires. Even the 9-volt battery connects with a snap-on clip, making the build safe for younger makers.
Is the OLED pre-soldered to the header pins?
Yes, the 0.96-inch OLED arrives with the I2C header already attached, so you can place it directly into the breadboard and connect four wires to start displaying text.
Button simulates coin flip. OLED shows running tally of heads vs tails and probability convergence.
What's in this kit
- Arduino Uno R3
- Tactile Button
- 0.96in OLED
- 10k? Resistors x5
- 400-pt Breadboard
- M-M Wires x15
- 9V Battery Snap
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