How To Make RF Remote Controls?

Upasana Dewan

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Radio-frequency remote controls are inevitable. They are now appearing in great numbers owing to better user experience and by overcoming various drawbacks of infrared (IR) remotes including – line-of-sight pointing, short transmission range, reflection problems and high power consumption of IR LEDs leading to low battery life. Typical applications of RF remotes include controlling equipment ranging from video games, stereo systems, lights, air conditioning units, fans and garage door openers to automotive remote keyless entry (RKE) key fobs, etc. For a detailed insight on the design of RF remotes, let’s walk through these reference designs available with complete documentation:-

Low-cost 2-Way RF Remote: 

rf remote 1

This reference design targets a low-cost, low-BOM-count 2-way Remote Control (RC) design for the industrial/scientific/medical  (ISM) band. The 2-way RC boards provide a switch input and three LEDs for human interaction. The compact board of 3cm x 3cm form factor contains a transceiver with the radio, microcontroller, a small antenna mounting connector, and multiple ports to connect various inputs to the system. This board can be operated from any 3V power source. The board is built around a MAX7032 radio transceiver IC and the MAXQ610 microcontroller from Maxim Integrated. The microcontroller comes preprogrammed to operate as the 2-way remote control. It can also be programmed by the user with JTAG interface. This document includes the complete documentation such as Gerber files, schematic and layout files. More on this Reference Design

RF Remote for Consumer Electronics & Electronic Shelf-labeling: 

rf remote ti

This reference design can be used for the development of robust remote-control systems with low bill-of-material cost for use in consumer electronics and electronic shelf labeling. The design utilizes a CC2533 from Texas Instruments, an optimized system-on-chip (SoC) solution for low-cost implementation and also provides an SPI/UART/I2C interface for implementing the remote-control system. The CC2533 combines an excellent RF transceiver with a 8051 compliant CPU with many powerful features like ultra-low-power consumption. The chip also includes example software to implement a remote control system. More on this Reference Design

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