Electronic Link

IR remote control

General info

• A Remote Control Study
• Inside TV Remote Control - The remote control's job is to wait for you to press a key, and then to translate that key-press into infrared (pronounced "infra-red") light signals that are received by the TV. When you take off the back cover of the control you can see what is inside it.
• IR and RF Signals - Today both IR (Infrared) and RF (Radio Frequency) signals are used throughout the A/V industry for communications, control, audio broadcasting
• Low cost IR filter - A low cost IR filter can be made from an exposed piece of color negative film.
• Programming your Universal Remote Control - Can't figure out how to change the settings on your universal remote control? This webpage is a list of IR remote controller programming resources plus other online locations that offer help on programming various remote controls.
• Remote Control Repair
• Repair Your Remote Control Keys
• U-OFA-URC: The Unofficial One-For-All Universal Remote Control Pages
• Wireless vs. Wired: Modulated and Unmodulated IR

Circuits

Repeaters

IR repeater circuits are remote control signal extenders. They can be used for example to pick up remotecontrol's signals and send them trough a long cable to a IR-transmitter in the other end of the cable, that would send the remotecontrol's signals to the IR signal recieving equipment that is placed in another room.

 

• 40 kHz TV-VCR light source repeater - designed to be placed directly in front of a standard TV or VCR remote to amplify the IR pulses to 10 timers stronger to operate a TV or VCR over three times the normal distance, pdf file
• Infra Red Remote Control Extender
• IR Remote control repeater circuit - also information about computer interfacing
• Long Range Infrared Remote by Boondog Automation, gives 8-20 ft of wireless control
• Remote Control Extender Mk1 - Originally published in Electronics in Action, January 1994
• Remote Control Extender Mk2 - Originally published in Electronics and Beyond (The Maplin Magazine), February 1997

Build a remote controller

• A Universal Infrared Remote Control - build your own IR remote based on Atmel 89C2051
• Micro based PIR to IR remote converter - an automatic system which starts the VCR recording and stops four minutes after the last PIR event
• Remote control for Sony A/V equipment - PIC based remote controller for IR and wired Control-S bus

Transmitter and receiver combinations

• Infa-Red Remote Control - simple circuit which controls one relay output
• Infrared Remote Control - allow you to turn on any piece of equipment that operates on 115 volts ac
• Infrared Remote Control - will allow you to turn on any piece of equipment that operates on 115 volts AC
• Infrared remote control shutter release system
• Remote Control Lighting - IR transmitter, receiver, switch and light dimmer

Receiver circuits

• 40 kHz light receiver is immune to ambient light - you can achieve a range of several hundred feet with a standard TV or VCR remote control module, pdf file
• IR Remote Control Tester - measures the relative intensities of different Infra red light sources
• IR Receiver for Sony Remotes - receive signals from a standard Sony remote control and send the code bytes(2) received to an RS-232 port, based on PIC 16C84
• Single IC forms sensitive modulated light receiver - a very inexpensive C-MOS IC that is connected to a small photodiode provides high sensitivity under high ambient light conditions, pdf file

Misc circuits

• Basic Infrated TX-RX - The transmitting section of this infrared tx-rx is unusually simple but it works rather well: the infrared LED pulses at a frequency of 160Hz and its range, with its receiver, is between 2 and 4m depending on the transformer used and the setting of the 100k pot.
• Collection of IR circuits - IR remote transponder, 40 kHz clock, night scope, IR remote decoding
• Infrared circuits for remote control - Infrared remote controls are using a 32-40 kHz modulated square wave for communication. These circuits are used to transmit a 1-3 kHz digital signal through infra light. The transmitter oscillator which is driving the infrared transmitter LED can be turned on/off by applying a TTL voltage on the MOD input. On the receiver side a photodiode takes up the signal.
• IR Remote Control Tester - measures the relative intensities of different Infra red light sources
• IR Remote Toggle Switch - Use ANY infra red remote to toggle this switch on or off. Relay output.
• Micro power 40 KHz burst laser diode driver - laser tag or simulated combat games can use this circuit to send short bursts of modulated laser light at the opponent's vest, equipped with a matching light receiver, operates from three 1.5v cells (4.5v) that should provide enough energy for about 200,000 shots, pdf file
• Modificiation for Sony STR-G3 receiver to add IR remote capability
• TV remote control blocker - this pdf file includes also some other funny circuits
• Use A PIC12C508 To Emulate An MM53200 Coder/Decoder

Computer interfaces

Combined receiver and transmitter circuits

• A Serial Infrared Remote Controller - a simple, cheap device that can be connected to any serial port to control most components that have infrared remote controls, includes schematics for receiver and transmitter
• IR Toggle Switch - a simple circuit which can switch a relay off/on by pressing any key on any IR remote controller
• Linux Infra-red Remote Control (LIRC)
• PC IR Remote Control
• Serial Infrared Controller - zipper demo file from Dunfield Devellopment System
• Universal IR Controller for a PC - This simple circuit allows you to record any IR remote control signal on your PC, and then play it back. This is particularly useful if you want to control appliances such as TVs, VCRs, CDs etc. from your computer. The device simply connects to the parallel port of your PC. You can also use this circuit to analyze the waveform from any IR remote control. This circuit was originally published in Electronics Australia, September 1998.

Transmitters

• Computerized Infrared Remote - control your stereo, TV and VCR from Windows, includes schematic and software
• Infrapuna lไhetin osa - This circuit connects to suitable TTL output and generates IR signal suitable for IR remote receiving modules. The text in this document is in Finnish.
• Infrared Remote Home Control software Remocon-Con for Windows98 - able to fire remote control signal through built in infrared port (IrDA) that is of notebook personal computer standard equipment
• TechnoMote - IR controlling software for Windows 95, 98 and NT 4, works with Earle F. Philhower's parallel port computer infrared interface
• The Next to Minimal InfraRed Transmitter for PC - very simple circuit and program, designed for Sony equipments but the source code can be modified for other systems

Receivers

• Convert Hauppauge IR remote control to IRMAN - How to modify Hauppauge IR remote control receiver to work as IRMAN compatible remote control receiver. The text is in Finnish.
• Infra Red (IR) Interface with Windows CD Software - use infrared technology to remotely control a CD-ROM drive with an audio CD
• Infrared Remote Control Of Your PC Is Easy! - simple device that connected to the computer serial-port enables the reception of infrared codes emitted from any commercial remote control unit and with a little Windows program the computer learns to recognize sequences and simulates key pressing or executes a program
• LIRC interface circuit - receiver for Linux IR remote controlling
• Receiver Circuits - wiring IR modules to PC serial port
• RMT32 Remote Control Add-On
• Universal Infrared Receiver - a small (1x2x1 inch) device that allows you to control your PC with the remote from your TV, VCR, CD or Stereo, based on PIC 12C509, connects to RS-232 port, also version for PIC 16C84