Android Controlled Induction Motor with 7 segment display

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The project controls the speed of an induction motor by an android device remotely. The project requires a Bluetooth connection or transmitter. The commands are sent through the transmitter which is received by the Bluetooth receiver interfaced to the microcontroller that is connected to the motor. Each time the command sent is executed by the micro controller that initiates delayed firing pulses to the thyristors by optical isolation. The loads are connected in series with the thyristor to control the power based on the command. A lamp is used instead of motor for demonstration purpose whose varying intensity tells the varying speed of the motor. The firing angle is displayed on a seven segment display.