Infrared electronic circuits, page 1 schematics to solve design problems

Infrared Circuits Page 1
IR Circuits: #-H I J-R S-Z
Last Updated on: Friday, February 05, 2010 10:05 AM

Circuits Designed by Dave Johnson, P.E. :

20MHz VCSEL 3mW LASER TEST CIRCUIT
This circuit takes advantage of some new vertical cavity surface emitting lasers (VCSEL) that don’t require light output control circuits. The circuit shows how to drive the device from a single high speed CMOS IC. The circuit can easily be modified to transmit signals from kilohertz to about 50MHz.

40KHZ LED TEST SIGNAL GENERATOR
This 40KHz crystal controlled oscillator circuit drives an infrared LED with powerful 40ma pulses. The circuit can be used to test optical communications circuits, designed to receive 40KHz modulated light signals.

40KHz TV-VCR LIGHT SOURCE REPEATER
This circuit is designed to be placed directly in front of a standard TV or VCR remote. The exiting light pulses produced by the circuit match the pulses from the remote but are about 10 times more powerful. Using the device, the remote can operate a TV or VCR over three times the normal distance.

COLOR FILM MAKES OPTICAL FILTER
This isn’t an electronic circuit but the file shows the curve for an optical filter made from exposed color film. The material blocks most visible light but is very transparent to 880nM infrared light. Kodak 100ASA is exposed to "cool white" fluorescent light for about 5 seconds. Then, the film is developed in the usual way. The color negatives form the filter material and does a fine job of blocking visible light wavelength and passing the longer near infrared wavelengths.

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

µC Provides Wireless Keypad Control - 10/08/98 EDN-Design Ideas: Scroll to finde specific article. Portable systems, such as telephone handsets, make extensive use of low-dropout (LDO)regulators. se components provide noise-sensitive parts with a stable power-supply line.....(design idea added 08/08/08)

2 Way IR Term - This unit provide 2 way IR communications using a numeric keypad and an LCD display. Data is sent and recieved in ASCII with no regard to what the data means to any particular device.
….(design added 08/08)

20MHz VCSEL 3mW Laser Test Circuit - This circuit takes advantage of some new vertical cavity surface emitting lasers (VCSEL) that don’t require light output control circuits. The circuit shows how to drive the device from a single high speed CMOS IC. The circuit can easily be modified to transmit signals from kilohertz to about 50MHz. ….(designed by David A. Johnson)

3 Channel IR Remote Control - This project is a 3-channel IR remote control with 3 output relay and easy to build. Features: CPU PIC12F629 at 4MHz crystal for Tx/Rx, 3 channel output relay, The Tx use sleep mode for saving battery power, Use Phillips RC5 protocol, distance more than 7 m, Easy circuit to build and assembly and small amount of components. Uses RC5 protocol which is probably the most used by hobbyists, probably because the wide availability of cheap remote controls and easy to understand. ….(electronic schematic added 11/08)

4 channel infrared remote relays - ….(circuit design added 08/08)

40kHz IR Tester - Use this circuit to test if the light coming from your 40khz IR emitter is really emitting the right frequency. The schematic says to use a GP1U5X ir module, but probably any 40khz detector module will work....(circuit / schematic design added 6/06)

40kHz LED Test Signal Generator - This 40KHz crystal controlled oscillator circuit drives an infrared LED with powerful 40ma pulses. The circuit can be used to test optical communications circuits, designed to receive 40KHz modulated light signals. ….(designed by David A. Johnson)

40kHz TV-VCR Light Source Repeater - This circuit is designed to be placed directly in front of a standard TV or VCR remote. The exiting light pulses produced by the circuit match the pulses from the remote but are about 10 times more powerful. Using the device, the remote can operate a TV or VCR over three times the normal distance. ….(designed by David A. Johnson)

555 Timer 40kHz Infrared Oscillator - (electronic circuit added 9/03)

8 channel IR remote control - This IR remote control that you can use to control other devices or circuits up to 8 devices. The control codes are sent in RC5 format modulated to about 38 kHz carrier frequency.The IR transmitter powered by the CR2016 which is a 3V button Cells Battery CR2016. To extend the life of the battery this is done by putting the CPU into SLEEP mode for most of the time and wake-up only when a key is pressed. ….(electronic schematic added 11/08)

A 70-W S-Band Amplifier For MMDS & Wireless Data/Internet Applications 12/11/00 - Application Note California Eastern Laboratories Doc #932 (app note added 6/06)

A Good IR Detector - Some of the companies put two transmitters, one on each side of the detector, to get a good field of coverage for the front of the 'bot and to detect left and right. 'Robots, Inspiration to Implementation has a great schematic that you can use to build one of these. I used all Radio Shack parts for the one I made and it cost about $10 to build. This detector will NOT detect black flower pots nor the bottom of boots (grin)....diagram added 2/07)

A Serial Infrared Remote Controller - (circuit / schematic design added 6/06)

A Very Stable 40kHz Clock (Rodney Radford) - ASCII format-A circuit that I have used before is based on the CD4060 (14stage binary counter) and a 640Khz ceramic resonator. The CD4060 is basically an oscillator and a ripple counter to divide the 640khz down to something more usable. (electronic circuit added 7/03)

An Infra-Red Remote Control Extender - This is a battery powered Infra-Red Link that will allow you to change channels on your Satellite Receiver and operate the controls on your VCR & DVD from anywhere in the house.

AN243: Fundamentals of the Infrared Physical Layer - Microchip Application Note Published 19-Jan-04 (app note added 2/06)

AN657: Decoding an Infrared Remote using a PIC16C5X MicroController - Microchip Application Note Published 26-Aug-97 (app note added 2/06)

AN714: Wireless Home Security Implementing KEELOQ® & the PICmicro® MicroController - Microchip Application Note Published 12-Oct-99 (app note added 2/06)

AN756: Using the MCP2120 for Infrared Communications - Microchip Application Note Published 4-Jun-01 (app note added 2/06)

AN-759 Companion Code - AN-759 Analog Devices Application Notes (app note added 2/06)

AN888: Programming the Palm OS™ for Embedded IR Applications - Microchip Application Note Published 8-Jan-04 (app note added 6/06)

AN941: Programming Windows XP® for Embedded IR Applications - Microchip Application Note Published 27-Jul-04 (app note added 6/06)

AN959: Using the PIC16F639 MCU for Smart Wireless Applications - Microchip Application Note Published 10-Nov-04 (app note added 2/06)

AV Audio/Video Wireless Transmitter - (electronic circuit added 4/05)

AVR Based Serial Port IR Receiver - (circuit / schematic design added 6/06)

Basic Infrared Light Train Detection - (circuit / schematic design added 6/06)

Basic infrared 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. With other receivers it may reach a range of 15m, without any lens but with a perfect alignment between tx and rx. The receiving section uses an infrared phototransistor and an additional infrared emitter is ...(added 9/07)

Build an Infrared Night Scope - Building a night scope is easy if you have the heart of it which is the image intensifier part. I would recommend using the PVS-5 module which uses 'MCP' or Micro Channel Plate technology. This is a U.S. 2nd generation device and is rated at 15,000 times light gain. The resolution is one of the best on the market. It was used in Desert Storm....ASCII format. (circuit / schematic design added 6/06)

Car Anti-Theft Wireless Alarm - This FM radio-controlled antift alarm can be used with any vehicle having 6to 12-volt DC supply system. The mini VHF, FM transmitter is fitted in vehicle at night when it is parked in car porch or car park. The receiver unit with CXA1019, a single IC-based FM radio module, which is freely available in market at reasonable rate, is kept inside. Receiver is .... (added 10/05)

Cheap 40kHz Clock - ASCII format. This circuit has worked for me in many applications. (it might be an idea to buffer the signal befor using it. (There are still 5 unused gates in the 'C14) (electronic circuit added 4/02)

Color Film Makes Optical Filter - This isn’t an electronic circuit but the file shows the curve for an optical filter made from exposed color film. The material blocks most visible light but is very transparent to 880nM infrared light. Kodak 100ASA is exposed to "cool white" fluorescent light for about 5 seconds. Then, the film is developed in the usual way. The color negatives form the filter material and does a fine job of blocking visible light wavelength and passing the longer near infrared wavelengths. Published in Electronic Design, Dec 2, 1996. ….(designed by David A. Johnson)

Computerized Infrared Remote - control your stereo, TV and VCR from Windows, includes schematic and software (added 4/02)

Day & Night Infrared Detection - (electronic circuit added 7/03)

Decoding an Infrared Remote using a PIC16C5X MicroController - Microchip Application Note Published 26-Aug-97 (app note added 2/06)

Decoding Infrared Remote Controls - ASCII format (circuit diagram added 1/07)

Design Case Study: Designing a Power Supply for a Portable Wireless Contact Manager - Maxim Application Note #1014 (app note added 5/08)

Designing an AM Receiver For Low Power Wireless Systems Using the NEC UPC2768GR IC 7/22/96 - Application Note California Eastern Laboratories Doc #921 (app note added 6/06)

Digibox Interface - (electronic circuit added 7/03)

Fire Stick Infrared Remote Control - (electronic circuit added 7/03)

Fundamentals of the Infrared Physical Layer - Microchip Application Note Published 19-Jan-04 (app note added 2/06)

Glitch Detector - In the circuit, two op amps (half of an LM324 quad op amp) and an SCR are direct coupled in a de-voltage monitoring circuit. Op-amp U1-a is configured as a voltage follower, which feeds the bridged inputs of the second op amp, Ul-b. A resistor/capacitor combination (R2/C1) connected to the negative input of U1-b forms ....(schematic / circuit added 6/07)

HP48SX IR DECODER - (electronic design added 6/07)

IR Circuits: #-H I J-R S-Z