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  1. M

    Help, schematic!!!

        Hi! I'm am Protel 2004 newbies. May I know how do I find 1N5822 and EE-Sx1070 (Omron slotted opto sensor) footprint and schematic diagram? Thanks for your kind help. :)
  2. M

    Help, EE-SX1070 schematic sysmbol and footprint

          I am a Protel newbies and plan to draw a PCB with Protel but could not find EE-SX1070 schematic symbol and footprint from the Protel library. Can anyone tell me how do do I get this schematic symbol and footprint? Thanks. :)
  3. M

    L298n IC socket, urgent!!!

        Hi, I just bought a L298n a bipolar stepper motor I which is 15 pins IC. May I know how do I find its IC socket because I can't find this IC socket and just modify a 18 pin IC socket. It is not so good because it is easy short circuit if modify with this way. May I know has anyone has an...
  4. M

    Help, data sheet!!!

          I just get a stepper motor from my old printer and plan to use it but I do not know its connection. Does anyone has its data sheet? I guess it is a bipolar stepper motor because it has only 4 wires. My stepper motor information is as below:- QH4-4387 SMJ40-4878-A 24.12V 7.5ohm FDK
  5. M

    Help, IC!!!

        Can please help me to check whether I can use MC3479-P H bridge IC to drive my bipolar stepper motor which is M42SP-7? Because I really do not have an idea. Thanks you first for your kind help. :)
  6. M

    Stepper motor H bridge

        I just brought a stepper motor H bridge IC and plan to use use it for my 12V bipolar stepper motor. May I know is this IC can use for my 12V bipolar stepper motor? How to check from the data sheet? If it is not. What kind of H bridge IC is suitable for me because I need and IC to control the...
  7. M

    Pulse Width Modulation

      Thanks, I have read the article called Pulse Width Modulation written by By Michael Adler and Tim Surtell at http://www.eleinmec.com/article.asp?28. May I know the mean of "The motor will work perfectly well, provided that the frequency of the pulsed signal is set correctly, a suitable...
  8. M

    Simple DC motor PWN speed control

          Recently I have read a Simple DC motor PWN speed control circuit from http://www.electronics-lab.com/projects/motor_light/038/index.html. Inside the article and below the word of important, there have mention that "the drain (or collector) current must be equal to maximum motor current...
  9. M

    Help!!! Conveyor belt.

                I'm a conveyor belt newbies. I plan to construct a 60cm conveyor belt which would use to transfer a a glass of water. May I know what material do I need to use and how do I construct this conveyor belt? Can I construct this with my recycle printer? Because I really interested to...
  10. M

    Vibration!!!

        I need a vibration motor but I cannot find it. May I know can I modify a DC motor or stepper motor to be a vibration motor? If it is possible, how do I modify it? Thanks.  :D
  11. M

    Conveyor Belt

            Actually I need to create a conveyor belt to transfer a glass with water from one place to another place, distance is around 60cm. Is anyone has an idea to create a conveyor belt? Do you have the construction diagram? Thank you first for your kind help.  :)
  12. M

    Help!!!

    Hi! I need to use an infrared diode to calculate the number of coins drop, may I know what type of infrared diode is suitable? I also need to do use a motor to vibrate the coins to make it fall down the slope, may I know what kind of motor can I use?
  13. M

    Infrared diode and motor

    Hi! I need to use an infrared diode to calculate the number of coins drop, may I know what type of infrared diode is suitable? I also need to do use a motor to vibrate the coins to make it fall down the slope, may I know what kind of motor can I use?
  14. M

    Thanks

        Thanks.  :)
  15. M

    Hitachi hd44780 16x2 LCD data sheet

    Hi! I'm a electronic newbies. Do you know where can I download the Hitachi hd44780 16x2 LCD data sheet? Thank you first for your kind help.  :)
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