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    • #2332
      LectronFan
      Participant

      Hi all,

      These are my first experiences with the Lectron System.

      At first glance, the modules are very sturdy and well assembled. I was surprised that the magnetic cubes always attract each other, no matter how they are positioned. Do the magnets have a north and South Pole ?

      Anyway, I start with the Basic set “Start und Ausbau “.  The big change is the use of silicon NPN transistors. Therefore the ground is negative, which resembles the technology of today.

      The first circuits are quickly build and tested. I like the meter a lot, it can deflect to the left and to the right, so you can measure negative and positive voltages. Now when it comes to circuit 07 (Blinklicht-Schaltung mit veränderter Blinkzeit), the resistor of 5,6k is too low in value. When used by pushing the switch, it prevents the circuit from working. Changing this value to 10k makes it work as expected. Also for the next experiments, putting a resistor of about 3,9k up to 4,7k in series with the LDR or NTC  makes the circuit work better.

      Can anyone confirm this ?

      What I also did, was using a tiny amount of Vaseline on the black plastic knobs of the switches. I removed the remaining with some tissue. Now the knobs slide in and out smoothly and the switches operate perfectly.

      To be continued …

      Greetings

       

      • This topic was modified 3 months, 4 weeks ago by mwpeters75.
      • This topic was modified 3 months, 4 weeks ago by mwpeters75.
      • This topic was modified 3 months, 4 weeks ago by mwpeters75. Reason: Changed font and size styling for easier reading
    • #2417
      mwpeters75
      Keymaster

      Hi Frank,

      Thanks so much for the very interesting topic regarding your first hand experiences with the new 1205 model!

      Your comments on improving how circuits can work better is especially helpful and interesting.  You are demonstrating the value of real ‘plug and play’ that the Lectron System is so adept at.

      Thanks also for your tip on improving the operation of the switch buttons.  I will make sure to collate these tips and recommendations in a separate page.

      Thanks so much!

      Best,
      Michael

      • This reply was modified 3 months, 4 weeks ago by mwpeters75. Reason: Changed font and size styling for easier reading
    • #6879
      Guenni75
      Participant

      Hi,

      the magnets have a north and a south pole, so it is important to assemble these in the right way. May be in old blocks (wrong marking / assembly or by user manipulation?) a few of them may fail. Old magnets had a square embossed marking (= inner side), newer ones a vertical black line (=outer side). While assembling it is a good practice to test the right condition with a second (good) block.

      Best,
      G

    • #7038
      LectronFan
      Participant

      Hi,

      Thank you for the hints about the magnets. These tips came in very handy when working at the amplifier block when adding contact plates.

      I also noticed that the magnets have a tab which should be oriented upwards.

      Greetings

    • #7227
      Guenni75
      Participant

      … approximately 99 percent are marked in the correct way (black or red line) but over the years I have found a couple of wrong marked magnets – so always make a test as described…

      Best,

      Guenther

      • This reply was modified 2 weeks, 3 days ago by mwpeters75.
      • This reply was modified 2 weeks, 3 days ago by mwpeters75.
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