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  1. GreekPIC

    3-Axis Stepper Controller

    Both leadnuts (X&Y) are bolted on the middle plate (you can see the X one and the bolts that hold the Y one. They are made from aluminum. -Lesson #1. Use Derlin for leadnuts. I thought the screw would wear the nut out to a point that binding will be minimized but its 7075T6 aluminum and...
  2. GreekPIC

    3-Axis Stepper Controller

    Here you go, I think this makes it clear:
  3. GreekPIC

    Model Elevator Control Circuit - PLEASE HELP!

    You can use microswitches with rollers like this: If you don't want to have to hold the bottons you can use a couple of relays in a latching configuration. Have you figured the mechanical part out yet? Nikolas
  4. GreekPIC

    3-Axis Stepper Controller

    Well what I'm building now is just a test bed. I want to work all the details out so when I make the "real deal" there'll be no surprises. It's made out of everything I could find for free or really cheap. The body is melamine particle board (gift), the ways are ball bearing drawer slides, the...
  5. GreekPIC

    3-Axis Stepper Controller

    I also wanted to report my experiences from using this board: -First of all the ver2.0 board will plug-in connectors makes it a lot easier to use. While seting the machine up you will need to rewire often. Having to unscrew ~20 terminals isn't fun. -It runs really cool. With printer steppers...
  6. GreekPIC

    3-Axis Stepper Controller

    Oh, now I see, not just a capacitor, thanks.
  7. GreekPIC

    3-Axis Stepper Controller

    Ok, thanks. So, if it's a cap, why doesn't my DVM agree with the nominal value?
  8. GreekPIC

    x,y,z programming

    It depends. What is your hardware? What will the robot do? Execute a sequence of motions or react to something? Or even be manualy controlled? I've made this board: http://www.electronics-lab.com/projects/pc/008/index.html for a CNC mill and use TurboCNC (http://www.dakeng.com). I guess you...
  9. GreekPIC

    3-Axis Stepper Controller

    Could someone help me with this? There's one in every hand drill. I thought it was a capacitor (it says 0.33uF on the case) but I measured it with my DVM and it was not.
  10. GreekPIC

    Salvaging Computer PSU

    You have to short pin 14 to pin 15 and it will turn on. (source:http://www.laserlab.com/atx_ps_connector.php) Nikolas
  11. GreekPIC

    An Ultrasonic Cleaner--Schematic

    Ha ha! That's a happy schematic!!! ;D ;D ;D
  12. GreekPIC

    please..........please..........please

    Why don't you start here? http://www.electronics-lab.com/articles/index.html
  13. GreekPIC

    Night Vision Camera

    The camera CAN see it. For example if you are interested in wildlife photography you can take pictures of animals without them seeing a flash and running away. Junaid, I hope you have something like this in mind and not something illegal, like taking nudie pics from someones bedroom window...
  14. GreekPIC

    Mulitple outputs from laptop

    http://www.anatekcorp.com/driving.htm T.V. out is more complicated and would require messing with the horizontal and vertical frequency
  15. GreekPIC

    electronic valve shower, do you have an idea???

    If you're still interested, a good place to find solenoid valves is a washing machine. I dismantled one that someone threw away (it was in perfect condition, just old). I took several usefull parts out of it.
  16. GreekPIC

    Construction design!

    OMG, it's fantastic! I want to make something like this. Maybe an FM receiver in a transparent cover.
  17. GreekPIC

    robotic arm

    You could use R/C servomotors. What are the arms specs? Range of motion, dimensions, what will it do, will it carry weight etc? If you come to a basic plan of what you want it will be easier to decide what kind of motor fits best.
  18. GreekPIC

    Electric Lock

  19. GreekPIC

    3-Axis Stepper Controller

    In most software packages you can change the pin assignment. I use TurboCNC and it does that, so does CNCPlayer which I've also tried. I haven't tried Mach2 but from what I've heard it does too. As a matter of fact it comes as a surprise to me that there are programs out there that don't give...
  20. GreekPIC

    Powering FM transmitter via USB?

    If it's just a matter of going off with the PC why don't you just drive a relay from the USB?
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