Connect with us

LED Proximity to MIDI Interfacing modulated ir to a control voltage (0 to +5)

Discussion in 'LEDs and Optoelectronics' started by fogg4444, Jun 21, 2011.

Scroll to continue with content
  1. fogg4444


    Jun 21, 2011
    Hello everyone! First post here for me.

    I have a unique project in mind. I have some electronics knowledge but not nearly enough to build exactly what I want. This is the project:

    MIDI Infrared Proximity Detector

    I have done some research on the topic. I plan to use the Pocket Electronic system by Doepfer as my interface.

    The Doepfer works with potentiometers of all kinds. It also works with control voltages from 0 to +5 volts. These voltages correspond to MIDI values form 0 to 127.

    I need to build an infrared transmitter / reciever unit that can have it's output modified into a stable 0 to +5v output.

    The next problem is that most IR detections systems apparently need a modulated/ pulsed output to keep out any unwanted interference.

    FInal question: Does anyone have any advice on how to build an oscillating IR transmitter and filtered receiver and then amplify it to a 0 to +5v output? Can I use an op-amp as some kind of potentiometer? How do I build the filter to pickup only a certain frequency?Am I on the right track with any of my research?

    Is there a pre-assemble product that I can buy instead of building the circuit from scratch?

    Thanks in advance for the help guys!
  2. BobK


    Jan 5, 2010
    Google "IR remote control module". You can get receiver modules that are 3 pins and include all the filtering needed. You supply power and ground and the other pin is an ouput that is high when it is receiving a signal. The transmitter is just an IR LED fed by a square wave. The typical operating frequency is 38KHz.

Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day