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Type: Posts; User: cbcnc

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  1. Thread: Dust Collection

    by cbcnc
    Replies
    8
    Views
    1,223

    BK, I was researching the same thing also and...

    BK,

    I was researching the same thing also and came across this site:
    Home built Cyclone Separator Lid.

    Chris
  2. Thread: Square

    by cbcnc
    Replies
    8
    Views
    1,076

    Latex paints will work fine. That includes water...

    Latex paints will work fine. That includes water based primers too. What really needs to happen to the MDF is it needs to be sealed first. You can use Kilz as suggested above. Latex primers, oil...
  3. Replies
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    2,363

    You can probably get the components you have...

    You can probably get the components you have working with some tweaking.

    I don't understand, either the switches are on (continuity) or they are off (no continuity). Or they are broken or have...
  4. Replies
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    2,363

    Is it possible that you have some funky switches?...

    Is it possible that you have some funky switches?
    The way to check would be a continuity tester or ohm meter that will read a partial connection. They should be either fully on or fully off. No...
  5. Replies
    17
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    2,363

    I'm so confused. :) Not really, it just takes a...

    I'm so confused. :)
    Not really, it just takes a lot of mental sorting out of the different parts of the problem. Since I'm not a electronics engineer I haven't been through it a bunch of times and...
  6. Replies
    17
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    2,363

    Alright, after thinking about this a little more...

    Alright, after thinking about this a little more and looking at the pictures of your BOB, here's my guess.
    The end of your limit switches should be connected to the signal ground since that...
  7. Replies
    17
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    2,363

    The parallel port coming from your computer has...

    The parallel port coming from your computer has several lines that are grounded. This is assuming you are using the proper power cables to your computer. And also that your power system that you are...
  8. Replies
    17
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    2,363

    Which Break Out Board are you using? This is...

    Which Break Out Board are you using?
    This is just a stab at the problem but it sounds like you have a floating ground. Where it's not 0 volts and is floating too close to the trip point.
    Here is a...
  9. Replies
    17
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    2,363

    Ground loops? Your shielding should be connected...

    Ground loops?
    Your shielding should be connected to ground in only one place. If your grounded shielding touches ground again you have just created a ground loop.

    Chris
  10. Replies
    6
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    1,804

    How about CamBam? Not a drawing program but will...

    How about CamBam? Not a drawing program but will edit .dxf files and process them to gcode.
    It's still in beta but getting better all the time. Free for the basic version. Or you can buy a full...
  11. Replies
    41
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    5,888

    Let's not forget about the fact that you don't...

    Let's not forget about the fact that you don't need a super computer to run EMC2. I'm using it on a 650 mhz PIII. Well maybe a little faster would be better for the GUI. But Ubuntu Linux and EMC get...
  12. Replies
    10
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    1,551

    How about a different regulator? Here's one...

    How about a different regulator?
    Here's one that fairly common and available:
    The LM317T is an adjustable regulator. It has a 40v voltage differential. That would just squeak in for 12 v. Or...
  13. Thanks for the circuit Mariss. It caused me to...

    Thanks for the circuit Mariss.
    It caused me to scratch my head for a second until I realized that you also have to have a switch or button to your direction pin for forward or reverse.

    :idea:...
  14. A higher voltage supply will get the motors to...

    A higher voltage supply will get the motors to spin faster.
    Changing the resistors won't work. Sorry I had misread what size resistors you had so all I did was to verify that they were right for the...
  15. Hi Dan, The resistors are going to control the...

    Hi Dan,

    The resistors are going to control the amperage going to your motors and not the voltage.
    By my figuring 2 - 5Ω, 15 watt resistors, one for each phase of your motor, would deliver 1.44...
  16. Replies
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    4,233

    Thanks to all for the help. I think that I have...

    Thanks to all for the help.
    I think that I have solved my problem!
    I have done some rerouting and reorganizing of my 120v wiring.
    It turns out that I had a couple of ground loops.
    I have two...
  17. Thread: Tool Marking

    by cbcnc
    Replies
    2
    Views
    1,101

    I use an engraver. It's quick and dirty. But,...

    I use an engraver. It's quick and dirty.

    But, here's a link just for fun:
    Electric Stencil
    It's a cool site with lots of old projects: (check the Vintage Farm Plans Link)...
  18. Replies
    5
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    1,045

    Al, It an analog signal of ch 1 but it's...

    Al,

    It an analog signal of ch 1 but it's inverted. My IPod looks cool on the scope. :)
    I found another section in the manual where it say a bit more:
    "CH 1 Out Jack. - Output terminal where...
  19. Replies
    34
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    4,233

    Thanks for the compliment. Check this out though....

    Thanks for the compliment. Check this out though.
    I just uploaded a picture of my new antenna. Just increased the area by about 120 sq in. :) Maybe that's why I'm having problems. :eek:

    My new Y...
  20. Replies
    5
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    1,045

    I am assuming that it is just an analog signal of...

    I am assuming that it is just an analog signal of what channel 1 is seeing. The quote above is just what the manual says. It doesn't give any other explanation.
    I have seen these sound card O-scopes...
  21. Replies
    5
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    1,045

    Oscilloscope Question

    I have a BK Precision 2120 scope. It's a good scope but it's basic. No storage, 20 mhz, dual trace.
    It has a Channel 1 output - "A 50Ω output is available for driving a frequency counter or other...
  22. Replies
    34
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    4,233

    I'm using a "Todd" 600 watt, 24v switching supply...

    I'm using a "Todd" 600 watt, 24v switching supply that I picked up as surplus. Also I have a little power block that I am using as a 5v supply.
    I know I checked it on my scope when I first bought...
  23. Replies
    34
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    4,233

    Thank you, Master. Chris

    Thank you, Master.

    Chris
  24. Replies
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    4,233

    There already is a 470pf cap on the step line to...

    There already is a 470pf cap on the step line to the 7486. Is it possible that it isn't the right value?

    Chris
  25. Replies
    34
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    4,233

    Would the HC series chips still use 5v, and be...

    Would the HC series chips still use 5v, and be pin for pin compatible with the TTL chips that are there?
    Unfortunately, the chips aren't socketed so it would mean unsoldering the existing chips. :( ...
  26. Replies
    34
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    4,233

    Phil, The chips are plain 7400 series TTL. The...

    Phil,
    The chips are plain 7400 series TTL. The logic is 7474 and 7486 to TIP 120 output transistors. There is also a diode on each output, I assume to limit the back EMF. Current limiting is thru...
  27. Replies
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    4,233

    Thanks everyone for your input I may not have...

    Thanks everyone for your input I may not have licked the problem yet but your thoughts have led me closer to figuring it out.
    electomek - Your explaination of my router putting out surges seems...
  28. Replies
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    1,151

    fritzgutten, Hardware requirements:...

    fritzgutten,

    Hardware requirements:
    http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Hardware_Requirements

    EmcKnowledgeBase
    http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl

    It's not really obvious...
  29. Replies
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    2,080

    Dan- I will look into some other code as I would...

    Dan- I will look into some other code as I would like to learn. Yes, string formatting, manipulation and file IO are things that would be important with the Hershey fonts. They are written in a...
  30. Replies
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    4,233

    Tom, Thank you, that's a really good thought....

    Tom,

    Thank you, that's a really good thought. My controller is very basic. It's a Kleinbauer "Piker". I think that it was designed to be very inexpensive. It works and does what it is supposed...
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