Search results

  1. GreekPIC

    3-Axis Stepper Controller

    RobiD: more voltage -> more torque, just don't exceed the motors specifications. You might also try different pulsewidth settings, the motor might be stalling. kanzor: In TurboCNC when you home the axis moves untill it trips the home switch, then resets to 0 or any other preset value (e.g...
  2. GreekPIC

    3-Axis Stepper Controller

    Yes, you got it.
  3. GreekPIC

    LEDs

    I thought it was here but maybe I was wrong. I saw a post about LEDs where someone linked a PDF with voltages for every color etc. What I wanted to know is: are there differences from these tables for super bright LEDs of the same color? Nikolas
  4. GreekPIC

    3-Axis Stepper Controller

    I'm not sure what you mean exactly. Both in the board and the schematic there are four diodes per axis facing from pins 1,3,6,8 towards the motors which are connected to the green terminals, to answer your previous question. Pins 2 and 5 on the connectors are common, so if you have a 5 wire...
  5. GreekPIC

    3-Axis Stepper Controller

    The cycling might be too fast to measure with a multimeter. I use TurboCNC, it has a port monitor with which you can set and check pin states. Sending one step at a time would make it easier for you to check. Also make sure the voltage levels of your parallel port are high enough.
  6. GreekPIC

    3-Axis Stepper Controller

    ...
  7. GreekPIC

    3-Axis Stepper Controller

    Here you go, Nilo. Sorry about the quality, it's not my camera but I think you can tell where everything goes... Nikolas
  8. GreekPIC

    PCB software

    To answer my own (#2) question: Target 3001 exports to IDF. I received an e-mail from them (I had tried a demo once, I didn't even remember that) about the new version: News within the current Version V11: - Library Updater - Realtime Design Rule Check - IDF-Export (allows e.g. 3D view of...
  9. GreekPIC

    3-Axis Stepper Controller

    You can use pull up resistors. MP can help with the values, but tying a resistor between each pin and +5V will make shure it's +5V when high. When its low it's grounded so it's 0V regardless of the resistor. Hope that helps. Nikolas
  10. GreekPIC

    Force sensors

    Thanks MP, I got some reading to do now... As for the circuit what I meant was this: as it is I can adjust the gain so that the voltage will go from 0V to 5V at full pressure. I could use one sensor per axis set up mechanically in a way that in the rest position the stick applies enough...
  11. GreekPIC

    Force sensors

    I thought so, it is quad so 2 axes x 2 sensors is what I need. But could you give me a schematic? I have never used an opamp before. How can I make the voltage go from 2.5 to 0V when one sensor is pressed and from 2.5 to 5V when the second is pressed?
  12. GreekPIC

    Force sensors

    Me and my crazy ideas again! I want to make a realistic replica of the F-16 SSC (actually a joystick which doesn't move). I found these sensors:http://www.tekscan.com/flexiforce/specs_flexiforce.html I want to make some changes: I want 2 sensors per axis. When the stick is centered both...
  13. GreekPIC

    3-Axis Stepper Controller

    I'll post one as soon as I fix my camera
  14. GreekPIC

    need help with idea!!!

    Well I'm new to this too so... Even though I'm a beginner I find it easy to make a circuit given the schematic. Just don't ask me to troubleshoot or modify...
  15. GreekPIC

    need help with idea!!!

    Just a quick search: http://www.electronickits.com/kit/complete/elec/ck1614.pdf Mode 5 is your thing I think
  16. GreekPIC

    3-Axis Stepper Controller

    I think the quill is not rigid enough. When it is all the way down it has a play of 2-3mm!! (at least the small ones like this). Where I work we have bigger (and more expensive) drills which I guess could manage the side forces). You could replace the bearings (and add some more) to make the...
  17. GreekPIC

    Stepper Motor Circuit

    http://www.electronics-lab.com/projects/pc/008/index.html Actually the discussion about this project was just 4 threads below yours!
  18. GreekPIC

    Layout problems!!! HELP!!!

    Yes you can, you have to create a new library. It's not very hard, I've only used Eagle 10-15 times and I managed to add an IC (UCN5804B). Easier yet if you don't care for the schematic to lool good and you just want to make the pcb is to place separate pads for the switch pins and place them...
  19. GreekPIC

    EAGLE USERS...i nid some assistance....

    I'm no expert in Eagle but I think: con-subd -> F09 -> F09H is what you need. HTH, Nikolas
  20. GreekPIC

    3-Axis Stepper Controller

    I use roller bearings in DIY housings (see pic). The problem is that the distance between the motor gear and the lead screw gear has to be set precisely. I decided to ditch this setup, however, for the following reasons: 1. The binding problem 2. I don't need reduction, the motors seem to have...
Top