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The ROBODIUM Motor Master Kit is a complete hands-on project designed to teach DC motor speed control using PWM (Pulse Width Modulation).
Using the TIP31C power transistor, Arduino UNO, and a 100K potentiometer, this kit allows users to precisely vary motor speed while monitoring values on a 16×2 LCD Display.
It is perfect for students, DIY makers, robotics learners, and engineering beginners who want to understand:
PWM motor control
Transistor-based motor driving
LCD interfacing
Safe power management
Practical electronics wiring
Ideal for robotics projects, mini engineering models, science exhibitions, and motor control demonstrations.
Arduino UNO R3
ATmega328P microcontroller
14 digital I/O pins (6 PWM)
USB programmable
Suitable for analog input from potentiometer
Supports external 5V / 9V power
Operating Voltage: 3V–12V
RPM depends on model (High torque/standard)
Suitable for load and speed experiments
Max Collector Current: 3A
Max Voltage: 40V
Drives motor using PWM signals
High efficiency for speed control applications
Provides smooth variable input to Arduino
Used for speed adjustment
Perfect for analog analog reading experiments
I2C or parallel interface
Displays motor speed, PWM values, and status
Operating Voltage: 5V
5V Regulator / DC-DC Buck Converter
Ensures stable power for Arduino
Flyback Diode (1N4007 / 1N4148)
Protects transistor from motor back-EMF
Separate power lines for motor & Arduino
Prevents voltage fluctuations
Easy prototyping
No soldering required
Protects components
Offers clean, professional project finish
• Arduino UNO Board × 1
• TIP31C NPN Transistor × 1
• 130 Micro DC Toy Motor × 1
• Johnson 12V DC Geared Motor (60 RPM) × 1
• 100K Potentiometer + Knob × 1
• 5V Adapter / External Power Supply × 1
• 16×2 LCD Display × 1
• Breadboard (Solderless) × 1
• Jumper Wire Set × 1
• 1N4007 Diode (Flyback Diode) × 1
• 10K ohm Variable Resistor (Trimpot/Preset) × 1
At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.
Most items sold on ROBODIUM™ can be returned within the return window, including:
To be eligible for a return, items must be:
Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.
We arrange the return pickup for you — hassle-free returns similar to major e-commerce platforms.
All products include a minimum 15-day warranty against manufacturing defects, unless otherwise specified on the product page.
Warranty does not cover misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.
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Take 20% off your first order
Enter the code below at checkout to get 20% off your first order