Recent content by alberto2

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  1. alberto2

    Electronics & Robotics

    good web site in the USA is: http://www.pololu.com/
  2. alberto2

    Electronics & Robotics

    Nice to meet you Fatal_Byte, i think that you can find a lot of ideas for your projects at this web site: http://www.lynxmotion.com Alberto
  3. alberto2

    3-Axis Stepper Controller

    GreekPic, something wrong with your board or with the Schematic? See the diodes directions.
  4. alberto2

    3-Axis Stepper Controller

    GreekPic, how do you connect the motors to the pcb? I use Turbocnc too but nothing moves!... witch settage have you used? Yours 4.7K resistor networks are 7+1 pin or 4x2? i never understand the true!
  5. alberto2

    3-Axis Stepper Controller

    how can i calculate them? wich is the general formula?
  6. alberto2

    3-Axis Stepper Controller

    In the schematic i have seen two resistors RM1 and RM2. Where can i find values?
  7. alberto2

    3-Axis Stepper Controller

    MP i have tested my parallel port without ucn 5804B. first with leds an after with a digital volmeter and when pin 2-3-4 are hight (stepper pulse) and pins 5-6-7 (stepper dir) there are only 2.6volt!!! How can i do? Is a problem of turbocnc? (there are a lots of parameters to specific! as...
  8. alberto2

    3-Axis Stepper Controller

    MP i have a question for you: If you measure with a digital volmeter pin 11 and 14 of ucn5804B which value do you have (before and after a motor startup)? I think that my ttl computer parallel port voltage il too low! Before the motor startup pin 11 is 0.23V and after 0.53 V but anything moves...
  9. alberto2

    3-Axis Stepper Controller

    Mp i think that it's the best choice, because with less dimensions it offers greater power as regards a traditional one. I found that toroidal in a old power supply bought in a surplus shop. it has a diameter of 100 mm and develops about 22Amp without any buzzing or overheating. The best thing...
  10. alberto2

    3-Axis Stepper Controller

    Here you are some pictures of my electronics box with 3-Axis Stepper Controller and relay board! ;D
  11. alberto2

    3-Axis Stepper Controller

    Dear Mp i like turboCNC but also i like delcam PowerMill
  12. alberto2

    3-Axis Stepper Controller

    This is a siple way to obtain a very inexpensive CNCmill! It can engrave metal very well! What do you think about? i think that it's a good idea!
  13. alberto2

    3-Axis Stepper Controller

    Dear MP i have built the relay board and it work well, but i have a problem: mine 3-Axis stepper controller board work at 26.2Volt (20-1.4*1.41) and my electric trasformer(20V 3A) have just one secondary.How can i take 12V to power the relay board and a little cooler fan (12V 2.3W)? I must buy...
  14. alberto2

    3-Axis Stepper Controller

    MP i copy the schematic of status LED in this site (SUB RELAY BOARD) if you think that there are problems the article must be correct. But probably is my not good electronics.
  15. alberto2

    3-Axis Stepper Controller

    Thank you MP this is the ultimate version. you think that the relay status LED schematic and resistor value are correct?
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