MIXER GRINDER SPEED CONTROL BY USING A TV REMOTE

     

The main scope of project is to control the mixer grinder speed by using IR remote. A standard TV remote is used with IR sensors connected to a microcontroller which reads the coded data from the remote for each button pressed to activate the corresponding output pin. This changes the time delay for the thyristor firing angle in 8 steps that drives the mixer grinder. Also the firing angle is displayed on a 7-segment LED display. The microcontroller does the above job as it receives the signals from the sensors, and these signals operate under the control of software, which is stored in ROM. All the above systems are controlled by the microcontroller. In this project we are using 8-bit, 40 pin microcontroller. A lamp load shall be provided in case motor is not taken. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components.



For more details about this project, please visit       http://www.efxkits.com/project-kit/microcontroller/1003.html

HARDWARE REQUIREMENTS:

OP-Amp, TRIAC or 2 SCRs in anti parallel, Opto-isolator (MOC3021), Resistors, Capacitors, Diodes, LED, Transformer, Voltage Regulator, Microcontroller unit, TSOP (IR sensor), Seven segment display.

SOFTWARE REQUIREMENTS:

Keil compiler, Languages: Embedded C or Assembly

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