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  1. M

    Faulty AC-DC Adapter?

    I bought a Trisonic TS-506B AC-DC adapter that allows you to choose the ouput voltage: 1.5-3-4.5-6-7.5-9-12. The purpose of this was to power my breadboard and to also be used for an arduino board every now and then. I cut off the tip to expose the wires, and after pulling out my multimeter have...
  2. M

    How to power max7219 with 8 * 40 LED matrix

    I would like to be able to use an Arduino Nano to control a matrix of 320 LEDs (8 * 40). I understand that both the arduino and the max7219 need 5v of power, but I'm not sure how to supply it. I was thinking I'd power the arduino separately from the max7219 and use 4 AA rechargable batteries to...
  3. M

    Good Cheap Multimeter

    Hi I'm getting into electronics (I bought the book Make: Electronics) and am in need of a multimeter. I was looking at the Mastech MS8268 $30 because it seems to have great reviews. I'm wondering if this is overkill or perfect for what I need. If you have any suggestions please leave a link...
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