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badai

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Posts posted by badai

  1. I have serial cable consist of 4 ports(on pcb).........one of them cannot work(physical problem). My expectation is because of the IC on that port. So, how i can know this is because of IC problem? Is it enough to test it using multimeter and compare with other IC from different port??? Any idea

  2. actually i had finished my layout. i export the layout in bitmap file but the problem is the size become larger when i want to print it. how to make it actual size? i try print directly(without export) and i got the real size but it was positive layout. my lab can do only negative layout. how to setting this one...pls.... :-\

  3. as you ask MP, i move to this forum.

    It looks like the author missed R17 on his schematic, from pin 12 to ground like R23 on the other side.(AUDIOGURU said).....can you show me clearly, where it should be placed?

    ERROR: Sheet 1/1: no SUPPLY for implicit POWER Pin IC1P V+
    ERROR: Sheet 1/1: no SUPPLY for implicit POWER Pin IC1P V-
    how should i do with this connection? i know this connection for PIN 4 and PIN 11, so how to draw this part?

    Pad 1 for antenna is it right?

    so can you comment what is still not cover or something wrong in my circuit and hopefully no more problem after this.

    post-2302-14279142146791_thumb.gif

  4. hello guys.

    i am doing stepper motor control for position and velocity( ramp generator) .i am using 8051 as the microcontroller.

    anyone know how to construct ramp generator for stepper motor?

    how is the connection then? does it an external circuit to the motor or it has to be connected to my 8051?

    a simple current could be use the, how the circuit is and how to connect it?

  5. where is R17? i didn't find it in circuit diagram but this component had been placed in layout board , is it missing?

    this is my schematic circuit. can you check for me either right or not? i'm using pad 1(wirepad) to connect my antenna, is it right?

    why my +ve and -ve(supply symbol) point not occur in my layout?

    post-2302-14279142146314_thumb.gif

  6. thanks so much for helping me......... ;).......now i understand to use this software....and hopefully can improve better after this.....actually i can't get this component (BFR90A) in my local shop, i bought wrong component actually before this....another series (BFG90, BFQ28, BFR24, BFR49) also didn't find. what should i do now????

  7. after i finish design schematic using EAGLE, i click to BOARD button, then i follow the instruction but when i clcik AUTO button, EAGLE cannot perform this command but on my schematic no error and warning was found. What is the problem?

    i didn't found this diode symbol BA481(OR NTE112) in library, so how should i do?

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