The RF transmitter acts as an RF remote control which has the advantage of an adequate range (up to 200 meters) with adequate antenna, while the receiver decodes the commands before feeding it to another microcontroller to drive the AC motor through A triac through an optical isolator. The trigger pulse is generated at the output by the microcontroller according to the program and the received command.
The program can be written in assembly language or Embedded C. The average voltage given or the average current flowing through the motor will change depending on the trip angle of the triac. Thus, the engine speed will change.
In addition, the project can be improved by the use of electronic power devices such as SCRs / IGBTs to achieve the highest industrial capacity control speed and the operation can be switched to Bluetooth for flexible operation with any Android smartphone.