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Infrared Circuits
IR Circuits:  #'s         A - B         C - H         I         J - M         N - R         S - U         V-Z

Last Updated on:
Saturday, August 01, 2015 06:21 AM


Circuits Designed by Dave Johnson, P.E. :
  • 125khz Wireless Smart Key Detector -  This circuit will turn on an indicator light whenever it detects a smart car key containing an RFID chip . . . [Circuit by David Johnson P.E.,  07/11/06]

  • 1us LED Pulse Driver + Voltage to Frequency Converter -  This circuit receives the signal from the above amplifier and launches powerful 1uS infrared light pulses from a low cost LED that are frequency modulated by the audio information. The 10KHz center frequency of the pulse stream is low enough so a standard . . . [Hobby Circuit designed by David Johnson P.E.,  03/22/99]

  • 20Mhz VCSEL 3mw Laser Test Circuit -  This circuit takes advantage of some new vertical cavity surface emitting lasers (VCSEL) that donít require light output control circuits. The circuit shows how to drive the device from a single high speed CMOS IC . . . [Circuit by David Johnson P.E.,  06/17/00]

  • 3mw Laser Test-20Mhz VCSEL -  This circuit takes advantage of some new vertical cavity surface emitting lasers (VCSEL) that donít require light output control circuits. The circuit shows how to drive the device from a single high speed CMOS IC . . . [Hobby Circuit designed by David A. Johnson P.E.,  06/17/00]

  • 40Khz Burst Laser Diode Driver -  Some 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. The circuit operates from three 1. 5v cells (4. 5v) that should provide enough energy . . . [Hobby Circuit designed by Dave Johnson P.E.,  06/04/00]

  • 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 . . . [Circuit by David Johnson P.E.,  06/04/00]

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

ĶC Provides Wireless Keypad Control -  10/08/98 EDN Design Idea   (Several Design Ideas, scroll to find this one. )  The circuit in Figure 1 is a simple, 4X4 keypad remote-control system. A 68HC705J1A ĶC, IC1 (Figure 1a), costs less than $1 and controls the keypad functions. When you depress any key, the ĶC provides a 4-bit hex-data output and then enables a latch signal to latch the data into IC2. Next, the ĶC enables IC2 to transmit the signal to the IC3 encoder to convert the 4-bit hex data to serial data to send to IC4. IC4, the RF data-transmitter module, mixes the serial data with the 315-MHz carrier frequency to transmit. . .  [by Lloyd Khuc, Motorola Inc, Austin, TX]

 

125khz Wireless Smart Key Detector -  This circuit will turn on an indicator light whenever it detects a smart car key containing an RFID chip . . . [Circuit by David Johnson P.E.,  07/11/06]

 

1us LED Pulse Driver + Voltage to Frequency Converter -  This circuit receives the signal from the above amplifier and launches powerful 1uS infrared light pulses from a low cost LED that are frequency modulated by the audio information. The 10KHz center frequency of the pulse stream is low enough so a standard . . . [Hobby Circuit designed by David Johnson P.E.,  03/22/99]

2 Way IR 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. . .  [Luhan Monat - Mesa Arizona ]

 

20Mhz VCSEL 3mw Laser Test Circuit -  This circuit takes advantage of some new vertical cavity surface emitting lasers (VCSEL) that donít require light output control circuits. The circuit shows how to drive the device from a single high speed CMOS IC . . . [Circuit by David Johnson P.E.,  06/17/00]

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. . . .  [Unfortunately designer's name is not given]

 

3mw Laser Test-20Mhz VCSEL -  This circuit takes advantage of some new vertical cavity surface emitting lasers (VCSEL) that donít require light output control circuits. The circuit shows how to drive the device from a single high speed CMOS IC . . . [Hobby Circuit designed by David A. Johnson P.E.,  06/17/00]

 

4 & 8 Infrared-Proximity Detectors (TSOP4830) -  In this circuit the TSOP4830 is used as a sensitive infrared detector that does not require shielding from room lighting. The detector will work under almost any lighting condition from complete darkness to full sunlight. scroll down for this one. . . .  [from Rob Paisley's Model Train web site]

 

4 channel infrared remote relays -  4 Channel Infrared (IR) Remote is a simple kit using the famous HT12A and HT12D encoder / decoder chips from Holtek. . .  [designed by Rajkumar Sharma]

 

40Khz Burst Laser Diode Driver -  Some 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. The circuit operates from three 1. 5v cells (4. 5v) that should provide enough energy . . . [Hobby Circuit designed by Dave Johnson P.E.,  06/04/00]

 

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. . . .  [Andy Wilson's site]

 

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 . . . [Circuit by David Johnson P.E.,  06/04/00]

 

5 channel infrared remote relays -  5 Channel Infrared (IR) Remote is a simple kit using the famous HT12A and HT12D encoder / decoder chips from Holtek. . .  [designed by Rajkumar Sharma]

 

555 Based IR Proximity Detector -  Sometimes you want a simple solution to a problem and you don't mind if your main controller has to do the work. This IRPD requires the main robot processor to choose which side to look at, and. . . 

 

555 Based IR Proximity Detector -  Several robotic projects on the page, please scroll to find this one. . . .  [Dennis Clark's website]

 

555 Timer 40kHz Infrared Oscillator -  This circuit oscillates two infrared LEDs at 40 khz. To make sure it is transmitting IR light, you can get a little tool from radio shack for about $5. It is a small sheet of plastic about 1" by 3" with a special strip of material, that when exposed to IR light glows (it's actually kinda cool) A way to check for 40khz IR. . .  [Andy Wilson's site]

 

6-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. . . .  [designer identified as Alfred73]

 

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. . . .  [Designer's name not included]

 

9 Volt 2 Amp PSU -  A simple 9 Volt 2 amp supply using a single IC regulator. . . .  [Andy Collison's website]

 

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Infrared Circuits
IR Circuits:  #'s         A - B         C - H         I         J - M         N - R         S - U         V-Z


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