Arduino Uno Reaction Speed Game Kit - LED Timer with 3-Player LCD Leaderboard
Arduino Uno Reaction Speed Game Kit: LED Timer & 3-Player LCD Leaderboard
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Turn a weekend afternoon into a thrilling arcade contest. This kit transforms an Arduino Uno into a reaction speed test station: a random LED lights up after a suspenseful countdown, your button press stops the timer instantly, and the LCD shows your score in milliseconds. Better yet, it keeps a leaderboard of the three fastest players, perfect for family game nights or classroom challenges.
What You'll Build
You'll wire a compact game board on a breadboard, where five colourful LEDs sit next to three tactile buttons. The Arduino code randomly selects one LED, waits a short, unpredictable countdown, and then starts a hidden timer the moment the LED glows. As soon as you press the matching button, the LCD displays your reaction time-and if it's one of the top three, your name (or player number) joins the leaderboard.
What You'll Learn
- Wiring an I2C LCD module to an Arduino for real-time data display
- Reading digital inputs from tactile buttons with debounce strategies
- Using Arduino's millis() function for precise reaction time measurement
- Implementing a leaderboard system that stores and updates top scores in memory
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| 5mm LED Assorted | 5 |
| Tactile Button | 3 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| 220? Resistors | 5 |
| 10k? Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 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
Tailor-made for CBSE Class 11-12 students exploring Arduino-based computer science practicals, first-semester B.Tech ECE/EEE learners who need a quick mini-project, and ATL Tinkering Labs running maker workshops. Parents looking for screen-free weekend tinkering will love it too-the AI companion guides both hardware and code, so no prior experience is required.
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 the box to instantly open the AI companion, which walks you through wiring and code. If you prefer a human, message us on WhatsApp and a Compoden engineer will reply within working hours.
Do I need any extra tools or batteries?
The kit includes a 9V battery snap, but you will need a standard 9V battery (not included) to power the Arduino. A USB A-to-B cable is required to upload the code; if you don't have one, you can buy a compatible cable separately.
Is the game code provided?
Yes, the AI companion supplies the complete, well-commented Arduino sketch. You can also download it directly from the Compoden resource page linked in the box.
Can young children build this independently?
With adult supervision, even 8-year-olds can follow the visual guide. The AI companion explains each step with pictures, so it's a fantastic parent-child activity for building confidence with electronics.
Random LED lights up after countdown. Button press records reaction time in ms on LCD. Leaderboard of 3 players.
What's in this kit
- Arduino Uno R3
- 5mm LED Assorted x5
- Tactile Button x3
- 16x2 LCD
- I2C Backpack
- 220? Resistors x5
- 10k? Resistors x5
- 400-pt Breadboard
- M-M Wires x20
- 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