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  1. M

    common cathode or anode

    Hello, please help me to distinguish is this common cathode or common anode connection 4 digits, 7 segment display? Schematics in attachment.. Thanks  ;)
  2. M

    PIC16F877A learning board

    I am soldering parts on my PIC16F877A learning board. But I have insufficient info about R1 component on upper left corner.. Can you help me figure out what kind of resistor is that? Schematic and PCB on photos: http://imageshack.us/photo/my-images/823/45106697.jpg/...
  3. M

    LCD 16x2 + PIC 16f628a (4bit mode)

    Hello, I connected everything like on shematics. I made hex file after succesfull build in mikroC and burned it on pic16f628a... but all I get is black boxes in first row of my lcd. Can you tell me where am i going wrong. I have LCD with side connections like one in attachment.. */ // LCD...
  4. M

    Power supply

    Hello, I would like to build laboratory power supply, but I am not having much sucess in finding suitable transformer for one that is described in Electronics Lab projects. Is this transformer suitable for such a use (lab power supply)? 60VA European type (input: 230V AC 50Hz): Standard...
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