Connect with us

Need some help to make the (Lirc serial IR receiver)

Discussion in 'General Electronics Discussion' started by manolete, Apr 9, 2019.

Scroll to continue with content
  1. manolete


    Apr 22, 2014

    I'm trying to make this circuit :

    I bough all required component an I maked the circuit as specified in the diagram but It doesn't work :( My electronics skills are limited and I dont know if I did mistakes or not.

    I have a doubt about the 78L05 regulator. In my case I used the 78S05 regulator. Can it be the problem ?

    here is my ugly ciruit I really sorry :/

  2. davenn

    davenn Moderator

    Sep 5, 2009
    Hi there
    Welcome :)

    looking at the circuit from your link,


    yeah you have a few problems

    Apart from the shocking soldering

    the 4.7uF cap isn't wired correctly

    You haven't used a 78L05 ... I would have to do a search to see if you have wired the 7805 correctly

    There should be a wire directly from pin 5 of the connector to the IR sensor haven't got that ( this also involves the earlier comment about the 4.7uF)

    The soldering on the back of the connector is so bad, I wouldn't be surprised if there were solder bridges between multiple pins

    unsolder it all and start again
    When soldering joints, take the solder and the iron tip to the wired and just use a small bit of solder
    DONT put solder onto the tip of the iron and then carry it to the wires, that's how you get the bad joints as shown

    Have another go and post photos of the results :)

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