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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by holobean

  1. H

    Modifying a water sensor

    Thanks for your websites.. but i don have time to reconstuct a new circuit, im having a presentation this week. At first the original ckt was to sound a speaker and im not using this speaker output instead im using it to supply to the parallel port to give me a on state thats all. I know its...
  2. H

    Modifying a water sensor

    Well im actually going to connect the output to the a parallel port.. enough to drive the the port to on state.
  3. H

    Modifying a water sensor

    okey i took this ckt from a hobby kit book. i know the 555 timer is working in astable mode and give an output of square wave at pin3 everytime the water sensor is activated and 0V when the water sensor is off. Now my problem is i don't want a square wave but a constant 5V output once the sensor...
  4. H

    How to use Java to control Parallel port

    Thanks Yes i did use googles.. but wasnt sure... anyway ive decided to use VB.. its definetly easier... i guess i need to suffer to refresh my memory on VB.. the last time i touch VB was like 4 years ago.. anyway thanksss
  5. H

    How to use Java to control Parallel port

    Does anyone knows how i can use java to control parallel port? Or can anyone point me to some useful information? I know like in VB u can MSCom.. but in java how?? plz help... im running out of time to studying VB to program parallel port.. im more familiar with java.. thankss:(
  6. H

    Converting A DC motor to ServoMotor

    Oh.. sorry about the little info i gave still new at this forum thing.. erm.. i would love to use the shortest and easiest way.. but i have a mechanical guy in my group and its a interdisplinary project... and he needs to do some part in the project.. okey.. the project prototype as in the pool...
  7. H

    Converting A DC motor to ServoMotor

    **broken link removed** anyway this is what im planing to do, the gear part is up to my mechanical groupmate to decide.... but if u have ideas on how i can make my life easier and the mechanical job easier.. plz do suggest.. bare with me the picture.. im not so artistic.. thanks for taking ur...
  8. H

    Can VB control serial port??

    Thanks guys... your the greatest and i really appreciate the help.. Now i see a bright light at the end of the tunnel.. i might not die after all.. i might just succeed in my project... thanks again.. but if u have more website about this topic.. POST them up... i will keep this sites till i...
  9. H

    Can VB control serial port??

    I heard that VB can control serial ports? how is it done? Can someone point me to the right direction maybe some useful websites? And lets say i want to connect the serial port to the PIC where the PIC has other circuit connected to it making it a small system. So how do u connect the serial...
  10. H

    USB -> Serial port

    :confused: Lets say during interfacing, im controlling my whole hardware side including a PIC by means of serial port, but my laptop has only USB, if i use the USB-serial converter cable, would it affect anything when im getting the results from the hardware? What about when im writing the...
  11. H

    Inexperience, Blur and Not so Sure

    thanks for the reply.. now i know how to start atleast.. well my project is a whole system... its not to indicate if the circuit is on actually.. im suppose to like control everything thru a system.. so lets say since my circuit consist of controlling the motor to vary the water pool wave...
  12. H

    Converting A DC motor to ServoMotor

    Is it possible to make a DC motor work like a servomotor? Coz im desperate to keep my project under budget. In my place, its hard to find servomotor and the only one i manage to find cost $RM 150.00. But its easier to find a stepper motor tho. Can u control a stepper motor like a servomotor? i...
  13. H

    Inexperience, Blur and Not so Sure

    Erm, okey im doing my year 2 project, and i was never taught PIC and programming it. its a 3.5 months project, and Im only left with less then 3 months to go. Ive finish my most of my circuit part. Well there is something im still not sure tho maybe its because i have no experince in programming...
  14. H

    need note about ultrasonic sensor

    oh come on.. u maybe more experience then others doesn't mean u can call them retard.. maybe he is jus learning? But i must agree tho.. that he is lazy, i mean those kinda info u can jus find it on the web..
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