Project Hub /Audio Displays & Interactive Media/LED Matrix & Cube Displays/SyncroPulse: LED Therapy Game

Intermediate

ARDUINO

₹1,500 – ₹5,000

6 – 12 Hours

Partial Kit

SyncroPulse: LED Therapy Game

An interactive reaction-time training and LED therapy game built using microcontroller hardware, designed to improve cognitive and motor skills.

Originally published on CircuitDigest

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

Reed Switch 2×14mm Normally Open Magnetic Sensor Out of stock
2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
10pcs 5mm RED Diffused Light Emitting Diodes - LEDs Set Rs. 39.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
10pcs - 220 ohm 1/4 W Resistor Set Rs. 39.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

This list includes a generic resistor set as a placeholder — it is not matched to the exact value or part number this circuit needs. The correct one is specified on the original source page linked above; check it before buying.

We don't carry yet: LCD (generic / unspecified)
Other Dev Board (Indusboard / Maixduino / misc)
Arduino Mega
Magnets / Electrodes / Probes
Logic ICs (74xx / 40xx)
Microcontroller IC (DIP) / Chip
5V DC

Browse all components

How It Works

The SyncroPulse: LED Therapy Game coordinates visual cues and physical inputs using a dual-microcontroller setup featuring the Arduino Mega and the Seeed Sipeed Maixduino. At the core of the display and input system are 100 LEDs paired with 64 push buttons and 30 reed switches, which together track user interactions and provide dynamic visual feedback. Because microcontrollers have a limited number of input and output pins, the circuit expands its capacity using 74HC595 shift registers for controlling the LED outputs and CD4021 input shift registers for reading the large array of buttons and switches. A 16x2 I2C interface LCD display communicates with the main board over a two-wire serial interface to show scores, game modes, or prompts to the user. Two 10mm magnets interact with the reed switches to trigger magnetic-sensing events, while 1k resistors ensure proper pull-up or current-limiting behaviors across the digital lines. The entire system is powered by a stable 5V DC, 2A power module distributing current through 28AWG wires, with all shift register integrated circuits housed safely in 8-pin IC bases.

Why Build This

Design and assemble a physical reaction-time and cognitive training device tailored for real-world rehabilitation and hand-eye coordination exercises.

Master advanced hardware scaling techniques by expanding microcontroller I/O pins using shift registers to manage dozens of buttons and LEDs simultaneously.

Integrate dual-board processing architectures by combining standard microcontroller logic with advanced AI vision capabilities for interactive media applications.

Real-World Application

Reaction training, cognitive therapy, hand-eye coordination improvement, and stress relief for users of all ages and rehabilitation settings.

Skills You'll Learn

Shift register cascading

digital input scanning

I2C serial communication

power distribution management

button matrix polling

hardware-software integration

Safety Precautions

No specific precautions noted for this build — always follow general electronics safety practices.

Technology Tags

ARDUINO

SIPEED MAIXDUINO

LED MATRIX

SHIFT REGISTER

I2C LCD

REACTION TIMER

C++

EMBEDDED SYSTEMS

Frequently Asked Questions

Why do I need shift registers like the 74HC595 and CD4021?

Microcontrollers like the Arduino Mega have many pins, but connecting 100 LEDs and nearly 100 input buttons separately would quickly exhaust available connections. Shift registers allow you to control many inputs and outputs using only a few pins via serial data transmission.

Can I power this project directly through a computer USB port?

With 100 LEDs and multiple microcontrollers operating simultaneously, the current draw can exceed standard USB port limits. The project uses a dedicated 5V DC, 2A power module to ensure stable and safe operation.

What is the purpose of the 16x2 I2C LCD Display?

The LCD uses the I2C protocol (requiring only SDA and SCL lines plus power) to display text-based information such as scores, game timers, or system prompts without cluttering the main digital I/O pins.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

PRJ-01074