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Induction Motor Control & Protection.
Project idea
Build a microcontroller-based AC motor controller that allows wireless start/stop, speed modulation via phase control, and safe direction reversal, while monitoring temperature and vibration to auto-shutdown on faults.​
An RPM encoder and wheel-size input compute real-time speed and distance, with status on a 16x2 LCD for operator feedback in lab and light industrial demos.​
 
Project description
An ATmega328P manages zero-cross synchronized TRIAC phase control for speed, opto-isolated via MOC3021 and sensed by H11AA1, while DPDT relays reverse single-phase winding connections for direction under safe interlocks.​
Bluetooth commands from an Android app adjust speed and direction; DS18B20 and SW-420 modules trigger cut-off on over-temperature or excessive vibration, with live RPM/distance and alarms on a 16x2 LCD.​
 
Components
  • ATmega328P Microcontroller​
  • HC-05 Bluetooth Module​
  • Encoder Sensor (IR speed sensor module)​
  • Temperature Sensor (DS18B20, waterproof)​
  • Vibration Sensor (SW-420 module)​
  • Induction Motor (0.25 HP single-phase)​
  • TRIAC (BT136)​
  • Optotriac Driver (MOC3021)​
  • Zero-cross Optocoupler (H11AA1)​
  • 16x2 LCD Display​
  • 12V 1A Step‑down Transformer​
  • DPDT 12V Relays (for reversing)​
  • SPDT 12V 10A Relay (main switching)​
  • Switch Buttons​
  • Status LEDs​
  • Bridge Rectifier​
  • Voltage Regulator Stage (5V rail)​
  • PCB Board​
  • Resistors​
  • Capacitors​
  • Cables and Connectors​
  • Terminal Blocks (Grid Poles)​
  • Screws and Bolts​
 
Features
  • App-based on/off, speed set, and direction control over Bluetooth (HC‑05)​
  • Speed control via phase-angle TRIAC drive with opto-isolated MOC3021 interface​
  • Direction control using relay-based winding reversal for single‑phase motors​
  • Fire/overheat protection by DS18B20 with auto cut‑off thresholding​
  • Vibration monitoring (SW‑420) with fault latch and safe shutdown​
  • Live RPM and distance on 16x2 character LCD​
 
Applications
  • Industrial motor labs and automation training rigs for AC motor control​
  • Conveyor and test benches needing adjustable speed and safety interlocks​
  • IoT/remote human–machine operation demos via Bluetooth serial control​
 
Project Includes:
  • Fully assembled and tested circuit
  • Circuit diagram
  • Source code 
(For DIY KITs - only the components will be provided)
 
Project Types:
  • DIY KIT(Do IT YourSelf KIT) - We are providing only components in this kit for this project
  • DIY KIT with Code & Circuit Connections - Along with the components, you will get the Code and the Circuit Connections file to help you build the project easily.
  • Readymade Breadboard - We are providing fully assembled, tested and ready-made project using plug-n-play jumper wires and breadboard with all the other components, code & circuit diagram.
  • Readymade Soldered - We are providing fully assembled, tested and ready-made project soldered on a PCB with all the other components, code & circuit diagram.
 
Dimensions (cm)
  • Controller enclosure: approximately 28 x 20 x 10 cm to accommodate LCD, transformer, relays, and TRIAC heat isolation zones​
  • Motor unit: typical 0.25 HP motor envelope near 33 x 20 x 23 cm (per 13x8x9 inch listing)​
 
Shipping dimensions (cm)
  • Packed kit (controller + motor with cushioning): approximately 36 x 26 x 26 cm​
 
Weight
  • Estimated kit weight: approximately 5.5–6.0 kg including a 0.25 HP motor and controller enclosure​
 
Estimate project weight: 6kg
 
Notes: All the products are made by LearnElectronics India and not for re-sale.

Induction Motor Control & Protection.

PriceFrom ₹9,938.00
Quantity
    • Order Processing Time:
      • After processing, the development of your project will begin. We require a minimum of 10-15 days to complete and prepare your project for shipment. However, please note that the delivery time is an estimate and may vary depending on project complexity and component availability.
      • All project orders are processed within 2-3 business days after payment confirmation.

      • Delivery Timeframe:

        • While we strive to deliver your project within the specified timeframe, there is no guaranteed delivery date. The actual delivery time may be shorter or longer depending on various factors, including shipping delays, customs clearance, and unforeseen technical challenges.
        • We will keep you informed of your project's progress and provide updates on the estimated delivery time as needed.

      • Shipping and Delivery Charges:

        • Delivery charges are additional and are not included in the project price. The shipping cost will be calculated at checkout based on your location and the chosen shipping method.
        • Customers are responsible for any customs duties, taxes, or fees that may be applicable in their country.

      • Order Cancellations:

        • Due to the customized nature of our projects, orders can only be canceled within 24 hours of placement. After this period, the order is non-cancellable as work will have already begun.

      • Returns and Refunds:

        • As these are custom-built projects, we do not accept returns or offer refunds unless the project is defective or significantly not as described.
        • If there are any issues with your project upon delivery, please contact us within 7 days to resolve the matter.

      • Technical Support:

        • We provide basic technical support for the first 30 days after delivery to help you set up and operate your project.
        • Extended support and customization services are available at an additional cost.

      • Disclaimer:

        • We are not responsible for delays caused by external factors beyond our control, including but not limited to shipping carrier delays, natural disasters, or government restrictions.
        • By placing an order, you agree to the terms and conditions outlined in this policy.
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