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Member #28595

Member Since: December 6, 2007

Country: United States

  • I used the ASCII font given in the example code in one of my projects and ran across a mystifying bug. I was developing code on a PIC12F675 to drive an OLED through its SPI interface. (Yes there are enough pins and memory to do this!) I was using the HI_TECH C compiler and tried several different approaches and never could get the "]" character to display. After pulling what is left of my hair out for 2 days, I realized there was a "\" in the comment for the previous line of the ASCII font definition which caused the compiler to treat the array entry for ] as a comment! Just replace the "// 5c \" comment with "//5c backslash" and everything works! I don't know if this effect is peculiar to the HI-TECH compiler only.

  • I started investigating version 2 of DesignSpark-with a view to eventually switching over. I found a few bugs, but I plan to play with it some more as it matures. As a one-man shop, money is tight and my boards are starting to get just a little too big for the cheap $49 version of Eagle(and more than 2 layers). The next step up of Eagle is just a little too expensive for me at this stage.

  • Because you have to order your boards from freePCB, which may be ok for onesies twosies, but not cost effective for a small business.

    To be honest, i put off learning Eagle for over a year because the learning curve looked steep. But once I determined I needed it after having to redesign my boards everytime I changed manufacturer, I found it was not as hard as it looks. just follow one of the tutorials.

  • Are you selling the ARM-USB-OCD version or the ARM-USB-OCD-H version? I have been unable to get the latter to work under Vista or Windows 7. I would appreciate hearing from anyone who has succeeded in using the -H version.

  • Well, that was interesting. Took me two hours to answer two questions.

  • For a 10-bit ADC with a referernce voltage of 5 volts, you cannot convert 5 volts. The maximum voltage you can represent is 1023/1024*5 or 4.995 (and change) volts.

  • hork?
    If I'm using socketed IC's, I always like to check power supply voltages at the socket before inserting the chip. You can also use an ohmeter to check between adjacent pins on the socket to be sure you did not get overzealous with the solder.

No public wish lists :(