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Recent content by Takeshi-san

  1. T

    pic+classification+and+oscillator

    1) Same as other CPUs - how "wide"(in bits) is command. well, it's a bit rough, but basic. 2) for example datasheet for PIC16F54 page 23
  2. T

    Need help! for microprocessor project.. 7x30 or 8x24 led dot matrix

    2 jumper2high, man, you made my day *LOL*
  3. T

    Protocols for RF communication between PIC

    actually usefull post has been deleted. well, let's try again. you have 3 options 1)use ECC 2)use check sum 3)use syncro pulse
  4. T

    question regarding RAM access

    well, then it will depends on moon phases and solar storm :) In general there is also some other control signals for example MEMIO, RD, WR, etc so the answer is READ DATASHEET
  5. T

    question regarding RAM access

    What is your CPU?
  6. T

    Amplifer for expriment

    is not really good idea for 100-900kHz range plus you have to match output and load. Also you don't need electrolitic capacitor in emitter circuit. Ceramic or maylar one will do the job. You should keep in mind gain or your amplifier and amplitude of input signal. At moment your description...
  7. T

    RF communication using PIC 18F4520

    Could you please be more specific 1)distance -? 2)speed -? 3)reliability -?
  8. T

    CPU+GPU - how to share RAM?

    DMA or shift clock. by the way, what is your CPU?
  9. T

    Design a 100MHz LC oscillator with varicap tuning

    Ummm... are you going to find tuning range or design? Google Image Result for http://www.softwareforeducation.com/electronics/notes/A2/Radio/carrier-generator.GIF ---------- Post added at 22:55 ---------- Previous post was at 22:54 ---------- Google Image Result for...
  10. T

    problem with input capture with PIC18F4550

    How about "pulling resistor" on input?
  11. T

    how to produce milli seconds delay in pic timer0?

    Hi, and first question - what is the frequency of XTAL?
  12. T

    Need help! for microprocessor project.. 7x30 or 8x24 led dot matrix

    IMO, if you are new to MPU, asm is much much better, because it will help to understand, how MPU working. PIC16F84 is classic one for ASM 2jabern 31 characters, if you will use 5*7 bitmap font, you will need to scroll 31*5 bytes of data(and don't forget spacing between symbols). just make a...
  13. T

    3-5v to 12v 1A boost converter

    how about just use bigger solar panel?

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