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  1. #13
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    Quote Originally Posted by tekno
    did you etch you boards or have them done?
    etched in the basement.. the copper appearance single PCB was done with Toner Transfer, but my toner on the old HP was getting poor, and the 'generic' toner I used to top up wasn't quite fully compatible..pretty messy..
    factory toner in that HP [300dpi] gives half decent transfers at 16mi, maybe 95% acceptable at 12mi, to get consistent 12mi I should actually have a 600 dpi laser.. For most of my hobby stuff I run 20mi signal and 24mi supply widths..no screwups, quick results..
    The bluish set of three PCB's was photo etched, a little faster, cleaner, better quality, but more expensive.. probably $4 CDn for actual photo sensitized board cost for that size..
    Silkscreen is better for [me anyways] for quantities of 5 plus.. a little slower because of drying time, and probably the cheapest of all for larger quantities.
    The top placement overlay on the bluish ones was Toner Transfer again, useable but not 'professional' quality..
    I did a quick silkscreen with 160 on these, but 12mi isn't very 'neat', useable, but not really nice looking, need 255 or better for 12mi, I use 160 for 20/24mi and the quality is reasonably good..
    After all, this is just a hobby??

    enjoy..
    Attached Thumbnails Attached Thumbnails IM000198.JPG  

  2. #14
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    hows this going?

  3. #15
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    Vladdy's board hasn't arrived yet. WIll update when it does.

    Phil

  4. #16
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    and you still have some work to do before that..
    code to check..
    board to populate...
    oh yeah, and you said you would drill the board ...

    that's the part I'm not too fond of..

    Just might have to make a drilling table.. just a hand one, probably faster than doing a cnc setup and registering, especially for small [read 4 or less] quantities..

    should still have some small linear slides around here someplace..probably drill from bottom up, need some kind of alignment pin..dremel mount, another dremel [again], maybe a small magnifying glass, just in case...
    maybe not, that way there will be a built in excuse if they are 'just a tad' off center..

    great, another project...

  5. #17
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    vladdy,
    Very true, I thought I was the only one out there that juggled a dozen projects. :-) Have to say a pcb router is dancing in my head...............

    Thanks for your help,
    Phil

  6. #18
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    Quote Originally Posted by pminmo
    vladdy,
    Very true, I thought I was the only one out there that juggled a dozen projects. :-) Have to say a pcb router is dancing in my head...............

    Thanks for your help,
    Phil

    Ya... I think my mill will be the second thing I finish.. pcb router has been moved to first.

    Tek

  7. #19
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    The coating on the set of three is the photo resist, I didn't bother removing it after etching, makes a good protective layer to help against corrosion, especially if it's going to sit for a while..It's not too bad to solder on top of, I use a Haako set around 550 degrees, gives a bit of a poor mans solder resist otherwise..can be scrubbed off with acetone, or polished off with a scotchbrite pad, tin if you want.. their your's now..

    The single one was Toner Transfer.. not very good..traces should be widened up a bit, and a little more isolation, especially on the one end with three small traces to make it a little more 'idiot proof'..
    I did a quick silk screen for these, but all I had was 160 line silk, results on a few trials came out 'fair'.. either a wider [024, 020 ??] trace would work better, or 255 line silk to get proper definition.

    You should have mentioned you needed some 2313's.. I've got a few dozen left over from a old satellite project...let me know if your's are going to take a while to come in..mail got there faster than I expected it would..

    how's the code coming??

    enjoy.

  8. #20
    Quote Originally Posted by vladdy
    You should have mentioned you needed some 2313's.. I've got a few dozen left over from a old satellite project...
    An old satellite project ehh? Sounds pretty cool. :cheers:

  9. #21
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    vladdy,
    Just sketching it out, listing attached, haven't checked it against pin numbers, and half stepping. Really forming ideas for a basic start.

    Phil

    Free smal Basic compilier for AVR's:
    http://www.mcselec.com/bascom-avr.htm
    Attached Files Attached Files
    Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
    Vist my websites - http://pminmo.com & http://millpcbs.com

  10. #22
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    AVR project status?

    Phil,

    Are you still working on this project?
    I'm interesting in learning microcontroller too.
    I had coded something similar to yours but on an AT90S8515 (coded in assembler). I was able to simulated it on the STK500.

    Please let me know how this project goes.

  11. #23
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    Kind of,
    I sent a blank board to Ito Brazil (cnc zone handle) a couple of weeks ago. I actually in the last couple of days have started looking at it. I had stolen the FET's for the L297uniboard prototype and ordered a different Mosfet for this avr board which I now have, I'm looking at the half step code also. Will keep you posted.
    Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
    Vist my websites - http://pminmo.com & http://millpcbs.com

  12. #24
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    hows this Going Phill? Im looking for some drivers that can run @ 55V dc. I like the DYI world.

    thanks

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