The on board LED which is connected to the 13 th pin of Arduino is used in the project although an external LED can always be used. The data pin is connected to Pin 12 of the Arduino.Īn antenna similar to the transmitter module is connected to the antenna pin of the 434 MHz Receiver module. VCC and GND pins are connected to 3.3V pin of the Arduino and ground respectively. The RF Receiver Module consists of 4 – pins: VCC, GND, Data and Antenna. The design of the Receiver part is as follows. An external LED can be used along with a current limiting resistor but on board LED would be sufficient. The receiver part consists of Arduino UNO and the 434 MHz Receiver module. We are using the on board LED for demonstration but an external LED along with current limiting resistor can be used. The antenna pin must be connected to an antenna which is nothing but a wire wound in the form of a coil. The data pin is connected to any of the digital input / output pin of Arduino. VCC and GND pins are connected to 5V and ground respectively. The RF Transmitter Module consists of 4 – pins: VCC, GND, Data and Antenna. The design of the Transmitter part is as follows. An external LED can be used but on board LED would be sufficient. The transmitter part consists of Arduino UNO and the 434 MHz Transmitter module. This module can be used for communication for distances up to 40 meters. In this project, we are using a 434 MHz RF Transmitter – Receiver pair. Usually, the frequency at which these modules communicate will be 315 MHz or 434 MHz. RF Module comprises of a transmitter and a receiver that operate at a radio frequency range.
RF Module is a cheap wireless communication module for low cost application. In this project, two Arduino boards will communicate using wireless communication. 434 MHz Receiver Module (or 315 MHz Module)Īrduino UNO is the low cost, open source, microcontroller board for electronics prototyping.434 MHz Transmitter Module (or 315 MHz Module).Arduino UNO (or any other Arduino board).The circuit for the Transmitter part of the project is shown below.Īnd the circuit for the Receiver part of the project is shown below. As it is a wireless communication project, the circuit consists of a Transmitter part and a Receiver part.
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