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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

    Or should I ask what is R1 on my schematic? Resettable fuse? schematic in attachment.. Thanks
  3. M

    PIC16F877A learning board

    I see power supply connector & USB are in that circuit..
  4. 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/...
  5. M

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

    ooops my mistake.. my LCD is 2x20 characters.. maybe code needs to be modified? maybe this LCD has different initialization routine than 2x16 LCD code is written for? Thanks
  6. 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...
  7. M

    Power supply

    Let's say I would like to make PSU like this one: http://www.electronics-lab.com/projects/power/001/index.html but with lower voltage considering my transformer. Thanks!
  8. 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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