The address byte of the transmitter is set to be 0x00 by grounding all the address pins, and pin 14 is also hard-wired to ground to enable an uninterrupted transmission. The transmitter section is the basic setup of the RF transmitter by connecting the RF transmitter to an antenna and HT12E encoder IC. The circuit has two sections – transmitter and receiver.
2: Block Diagram of RF DC Motor Controller Circuit Connections The L293D IC (which can control a maximum of two DC motors) is used in the circuit.įig. The project shows controlling two 12V 3000RPM DC motors at the receiver section using the 4-bit control signal. A set of 2 bits is required as a control signal for remote operating a single DC Motor. The RF module can transmit 4-bit data at once. Learn more about increasing the operational range of the RF module. The operational range can be extended by using an antenna of standard size and increasing the transmission power of the antenna. Learn about the basic setup of RF transmitter and receiver. It transmits data at a baud rate of 1Kbps to 10 Kbps and can have an operational range of up to 300 metre. The RF module used in the project is the 434 MHz module. Any other complex project using a microcontroller can utilize this concept by altering the receiver section of this project where the DC motor circuit interfaced directly to the RF receiver here can be interfaced through a microcontroller too.įig. The concept illustrated in the project can be used in several applications where microcontroller may or may not be in use. This project is a simple demonstration of remote controlling a DC motor by switching it on or off and changing the direction of its rotation. For example, a remote-controlled car may require starting moving or halt, increase or decrease acceleration or move forward or backward by controlling the factors as mentioned above of the DC motors attached to its wheels. Here, controlling the motor refers to switching the motor on or off, changing its speed, and altering the direction of its rotation. A lot of these applications require remote controlling the operations of the DC motor. It may be a line-following robot, a remote-controlled car, electronic shutters and doors, digital locks, drones, and choppers, etc the DC motors are used in a variety of applications. DC Motors are commonly used in electronics and electrical projects.
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