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Infrared Circuits
IR Circuits:  #'s - A         B - H         I - K         L - Q         R - S         T - Z


Last Updated on:
Thursday, November 30, 2017 10:29 AM

 

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

Circuits Designed by Dave Johnson, P.E. :

Reflected Infrared Light SwitchInfrared light reflected off a finger is used to activate this switch circuit.  Drawing only 30uA from a 3v supply, this circuit will detect a human finger with a range of about 1 inch.  The sensor uses an inexpensive infrared LED and a matching photo diode . . . Hobby Circuit designed by David A. Johnson P.E.-July, 2006

Remote Extender CircuitThis 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. . . Circuit by David A. Johnson P.E.-June, 2000

Remote Range Extender TV/VCRI often get frustrated by how poor some infrared remotes in many new electronic devices operate.  I used to be able to turn on the TV from 30 feet away.  Now, it seems that I have to get within 15 feet.  To address this issue, I designed the circuit shown below.  The circuit taps into the TV remote’s existing infrared LED and drives 8 more efficient devices.  The result is a communications range some 4 to 5 times longer. . . . Hobby Circuit designed by Dave Johnson P.E.-December, 2000

Replace a Pushbutton Switch with this Infrared Safety SwitchUsing a slotted optical sensor, this circuit can be used as a replacement for a large mushroom pushbutton safety switch . . . Hobby Circuit designed by David Johnson P.E.-July, 2006

Scare Off PigeonsI have an area on my roof where a large flock of pigeons like to roost.  Their nesting materials and droppings really make a mess.  Often there is enough junk from them that it clogs my roof gutters.  Perhaps one way to scare them away . . . Hobby Circuit designed by David A. Johnson P.E.-April, 2005

Shadow Activated Motion DetectorThe hobby circuit below works quite well in typical indoor room lighting.  I would not recommend its use in direct sunlight.  Two small PIN photodiodes positioned about one inch apart form a shadow detector.  With no shadow cast on the devices, both device . . . Hobby Circuit designed by Dave Johnson P.E.-August, 2005

Short Range Reflective Object SensorDrawing only 30uA from a 3v supply, this circuit will detect a human finger with a range of about 1 inch.  The sensor uses an inexpensive infrared LED and a matching photo diode. . . Circuit by David A. Johnson P.E.-July, 2006

Solar Powered Infrared 1W Security Camera IlluminatorMany security cameras are equipped with an array of infrared LEDs to illuminate an area in front of the camera with invisible light for night time surveillance.    However, there are times when a remote area, well away from the camera, needs additional infrared light.    The circuit below uses a modified solar powered path light to bathe a fairly large area with 850nm infrared light. . . Circuit by David A. Johnson P.E.-June, 2014

RD68HC908IRC : MC68HC908QT2 Based Simple Circuit Infrared Remote Control Reference Design -  Motorola has developed a simple, single dedicated device, infrared remote control designed to control a DVD player.  This reference design demonstrates how to time and create modulated infrared signals used to control six basic functions of the DVD player.   __ Designed by Freescale

Reflected Infrared Light Switch -  Infrared light reflected off a finger is used to activate this switch circuit.  Drawing only 30uA from a 3v supply, this circuit will detect a human finger with a range of about 1 inch.  The sensor uses an inexpensive infrared LED and a matching photo diode . . . Hobby Circuit designed by David A. Johnson P.E.-July, 2006

Remote Control Extender Mk 4 -  An Infra Red wired Repeater circuit to control appliances from a remote location. __ Designed by Andy Collison

Remote Control for Raymarine ST4000 Autopilot -  Schematic Only  -uses raytheon's seatalk®communications protocol.  (16f628)  __ Designed by Jon Fick

Remote Control for Sony a/  Volt Equipment -  PIC based remote controller for Infrared and wired Control-S bus __ Designed by Eric Smith

Remote control transmitter-control Devices from the PC -  Control all your devices from the PC.  This infrared remote control transmitter can be controlled from a computer.  It speaks many different remote control formats, like the Philips RC-5 standard and can be tailored to other specific types.   __ Designed by Peter Jakab

Remote control uses an IR Receiver chip to receive the IR signal from the remote -  The circuit uses an IR receiver chip to receive the IR signal from the remote. The chip includes a bandpass filter and a demodulator, so the output is a logic signal.   The signal is then processed by an Atmel 89C2051 chip that decodes the remote signal and controls the volume pot and relays. __ Contact: mcs @ post5 . Tele . dk

Remote Extender Circuit -  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. . . Circuit by David A. Johnson P.E.-June, 2000

Remote Infrared Terminal -  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 __ Designed by Luhan MonatMesa Arizona

Remote Range Extender TV/VCR -  I often get frustrated by how poor some infrared remotes in many new electronic devices operate.  I used to be able to turn on the TV from 30 feet away.  Now, it seems that I have to get within 15 feet.  To address this issue, I designed the circuit shown below.  The circuit taps into the TV remote’s existing infrared LED and drives 8 more efficient devices.  The result is a communications range some 4 to 5 times longer. . . . Hobby Circuit designed by Dave Johnson P.E.-December, 2000

Replace a Pushbutton Switch with this Infrared Safety Switch -  Using a slotted optical sensor, this circuit can be used as a replacement for a large mushroom pushbutton safety switch . . . Hobby Circuit designed by David Johnson P.E.-July, 2006

RF Wireless PWM DC Motor Speed control -  The wireless PWM DC motor transmitter circuit consists of WZ-X01 RF module, Holtek HT-640 encoder and 8-bit A/D converter.  U1 ADC0804 converts the analog voltage to digital data; U2 encodes that data  (D0~D6) along with D6, D7 and transmitting through the RF transmitter module.  The potentiometer VR1 varies the voltage to the A/D U1 pin6,  __ Contact: info @ wzmicro.com

Rj45 Network Card To IR Communication -  This system, composed of two opto-insulated circuits, allows the data transmission per infra-red network device between two computers.  For example, someone can transfer his files starting from his desktop computer to his laptop computer without using any cable.  How? By using infra-red diodes.  We have to connect a circuit to the 10/100 Mbps network card

RS 232 to TTL converter tests UARTs with a PC -  05/29/08  EDN-Design Ideas A simple RS-232-to-TTL converter tests UARTs using a PC's serial port for power __ Circuit Design by Matthieu Bienvenüe, Malissard, France

Rx I.F. and Product Detector -  SSB Transceiver-Receiver Section:  Two silicon switching diodes are used for receive/transmit switching of the input side of the SSB filter.  The IF amp is an MC1350P.  This device can give more than 60dB of gain at 7.8Mhz.  I decided to use a single IF amplifier stage, followed by a relatively high gain AF amp  (60dB +) .  The output transformer is a KANK3334R, with a 100pf capacitor and 5K6 resistor across the primary. __ Designed by EI9GQ homebrew radio

Scare Off Pigeons -  I have an area on my roof where a large flock of pigeons like to roost.  Their nesting materials and droppings really make a mess.  Often there is enough junk from them that it clogs my roof gutters.  Perhaps one way to scare them away . . . Hobby Circuit designed by David A. Johnson P.E.-April, 2005

Serial Infrared Remote Controller -  This is a simple, cheap device that can be connected to any serial port to control most components that have infrared remote controls.  I designed and built it    (on a solderless breadboard) in 1991.  In 1992 I wrote a lengthy description of it for an electronics class.  In 1994 I finally designed a PC board for it, using a free, X-based PC board design program called pcb, and in 1995 I etched several of the boards and made the final product __ Designed by John DuBois

Serial port controller infrared transmitter (PIC16F628) -  Control all your devices from the PC.  This infrared remote control transmitter can be controlled from a computer.  It speaks many different remote control formats, like the Philips RC-5 standard and can be tailored to other specific types.   __ Designed by Peter Jakab

Serial-driven IR remote Controller -  This paper describes a serial infrared transmitter  (SIT)   capable of  generating  the infrared codes used by most current equipment that incorporates an infrared remote control.    It is operated by a computer    through  an  asynchronous  communications port.    Driver software __ Designed by John H. DuBois III

Shadow Activated Motion Detector -  The hobby circuit below works quite well in typical indoor room lighting.  I would not recommend its use in direct sunlight.  Two small PIN photodiodes positioned about one inch apart form a shadow detector.  With no shadow cast on the devices, both device . . . Hobby Circuit designed by Dave Johnson P.E.-August, 2005

Short Range Reflective Object Sensor -  Drawing only 30uA from a 3v supply, this circuit will detect a human finger with a range of about 1 inch.  The sensor uses an inexpensive infrared LED and a matching photo diode. . . Circuit by David A. Johnson P.E.-July, 2006

Simple Circuit 4-CH Remote Control -  You can construct your own long range infrared  (IR) wireless remote using Motorola's MC145026 emitter and MC145027 detector chips.  With your remote you can control devices up to 20 feet  (7 meters) away.  It operates similiarly to a TV remote.  You just point the emitter at the detector, push a transmit button.  The detector then interprets your data signal.  You can use this circuit to remotely turn on/off devices  (like a motors, relays, home appliances) .   __ Designed by Boondog web site

Simple Circuit infra-red Detector -  Infrared based electronic circuit diagrams / circuit schematics __ Designed by Tomi Engdahl

Simple Circuit Infrared Remote Control -  This article will show you how to use the components in our infrared data communications parts KIT.   __ Designed by Reynold's Elec

Simple Circuit IR transmitter -  This is an IR transmitting circuit which can be used in many projects  (I designed this to try to make my 3D glasses wireless) .  This IR transmitter sends 40 kHz  (frequency can be adjusted using R2) carrier under computer control  (computer can turn the IR transmission on and off) .  IR carriers at around 40 kHz carrier frequency are widely used in TV remote controlling and ICs for receiving these signals are quite easily available. __ Designed by Tomi Engdahl

Simple Circuit Wireless Radio Data Link -  This is a description of a very simple unit designed and constructed for use as a wireless data connection between two nearby computers.  The error rate is excellent over short runs, and the transmission speed means that a useful PPP link can be established between the machines.  Which are, of course, running Linux

Simple IF Amplifier -  I wanted to replace the 150-kHz ceramic IF filter a Kenwood KT-880D used in narrow-IF mode with two Murata 110-kHz filters. I needed an amplifier to compensate for the additional loss and to isolate and properly terminate the filters. __ Designed by Brian Beezley K6STI

Simple Infrared (IR) Remote Control Circuit -  Infrared based electronic circuit diagrams / circuit schematics

Six channel IR remote system with  micro PIC 16F84 -  This project is a remote control system based on a pic and an universal remote controller  for TV, named SIMPLEX.   __ Designed by Alfred73

Solar Powered Infrared 1W Security Camera Illuminator -  Many security cameras are equipped with an array of infrared LEDs to illuminate an area in front of the camera with invisible light for night time surveillance.    However, there are times when a remote area, well away from the camera, needs additional infrared light.    The circuit below uses a modified solar powered path light to bathe a fairly large area with 850nm infrared light. . . Circuit by David A. Johnson P.E.-June, 2014

Supply Voltage Indicator -  This simple and slightly odd circuit can clearly show the level of the supply voltage  (in a larger device) : as long as the indicator has good 12 volts at its input, LED1 gives steady, uninterrupted  (for the naked eye) yellow light.  If the input voltage falls below 11 V, LED1 will start to blink and the blinking will just get slower and slower if the voltage __ Designed by Miroslav Adzic-Serbia & Montenegro


Infrared Circuits
IR Circuits:  #'s - A         B - H         I - K         L - Q         R - S         T - Z


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