Wireless Interface RF Modules

Current Part:

PIC 18F4520 Microcontroller
PIC 18F452 Microcontroller
2x LM7805
RF 434MHz Transmitter Module
RF 434MHz Receiver Module
16 MHz Crystal
2x 10kΩ Resistor
2x Push Button
2x 5mm LEDs
2x 47uF Capacitors
2x Breadboard
Jumper Wire
9v Connector
Pickit 2

Parts List Details
           The list of parts used for this project is relatively short, but there are a few core parts that I'll describe in more detail below. These are the parts that really make this tutorial work.

PIC 18F452 - PIC 18F4520
           These two microcontrollers will be doing the processing of the data being transmitted and received. One sends information to the RF Module transmitter and the other PIC understands and executes the information sent to it by the RF Module receiver.

RF 434MHz Transmitter Module
           This is a small 4 pin module that requires only power, ground and data. It is small enough to fit into any project and add wireless communication. It can be powered with +2v to +12v, high voltages means higher transmission power.

RF 434MHz Receiver Module
           The rf interface receiver module is larger for demodulation and amplification circuitry. It also has a simple array of power, ground and data pins to connect up with the PIC's USART.

LM7805 +5v Regulator
           Two of these +5v regulators are used to control the battery input down to +5 volts. This is the power needed to run the PIC microcontrollers and can also be used for the rf interface transmitter and receiver modules.

Jumper Wire & Breadboard
           There is a lot of jumper wire used on the two breadboards for this project to connect everything up. Two different sized breadboards are needed because the rf receiver module is pretty long. The transmitter is much shorter, so a smaller breadboard can be used there.