Recent content by waferstar

  1. waferstar

    Extract the Code from the Programed and encrypted MCU

    www.mcuservice.com We provide the best service in the MCU.
  2. waferstar

    MCU Code extract engineering

    We are the best research center in China for the MCU service. especially ,we are specialized in the Microchip , Atmel ,AVR , Atmega and so on. Please visit our service at : www.mcuservice.com
  3. waferstar

    Adjustable Voltage Reg LM317, Should it be getting this hot ?

    That should be very hot, the efficient is about 66% .... so that is overload of LM317 I think you can change to use : LM2576,that would be very good.because that is switching power chips. www.mcuservice.com
  4. waferstar

    motion sensor power supply problem

    I think that is easy to Change,and the left PCB is supply the power and for relay output. and if you remove the compacitor and supply the AC current directly to the bridge circuit. www.mcuservice.com
  5. waferstar

    ISA Interfacing

    Please download the hardware book from this site: http://www.mcuservice.com/download/HWBOOK.zip That is a good book,and have almost all the interface of the PC hardware, for example ,PCI,ISA,RS232,PS2 and so on. Hope this would be useful for you.
  6. waferstar

    MCU Code extract engineering

    Whether it's rebuilding a car engine or diagramming a sentence, people can learn about many things simply by taking them apart and putting them back together again. That, in a nutshell, is the concept behind reverse-engineering breaking something down,then  in order to understand it, build a...
  7. waferstar

    Extract the Code from the Programed and encrypted MCU

    Welcome to cooperate with companies or persons from all the world. Hope we can become good friens. Shanghai/China
  8. waferstar

    Current monitor/sensor

    I think if need a simple ,you can use the Variable-Resistance(VR),and set the current to your need and then use a Comparator . Or use a small value Resistance to sample the current ,and then get the volatage to analysis. that is the similar in the battery charger...
  9. waferstar

    Remote Data Logger (GPRS Perhaps?)

    I think you can use a GSM or GRPS module to design this system. When the sensors in different places get the data,and then can send the data through the GSM or GPRS module to your center. If the data information is just a little,you can try to use the SMS to send .and also can use this channel...
  10. waferstar

    I would like to sell the following project souce code

    1.PS2/MOUSE DRIVE 2.Coin operated machine project 3.Coin selector project 4.PS/2 Mouse project 5.Remote control receiver code And so on..................... All the project is developed by myself ,and I would like to sell all the souce code of them to who want to have it and study together. And...
  11. waferstar

    Sell PS/2 Keyboard driver

    I would like to sell my Drive for ps2 mouse. That drive is a big package for WINDOWS98/2000/NT/XP..... that is programmed by C Language.
  12. waferstar

    making a speed control for a 38 volt dc motor

    Dear, There is so many choice for you to use. 1.If you are design a good products,you can choose the MCU to control the PWM CHIP to control the Motor 2.you can use a Mcu with a PWM output to control the MOS transistor to control the motor 3.If you just to design a easy tool for yourself ,you can...
  13. waferstar

    interface relay to 8051 uc

    We don't know what is exactly you want to know . If your 8051 system want to connect with the 12V system,you should use the 12V power supply and the low down the Voltage to 5V for 8051 system. and you the relay is used in the 8051 system,you can select the 5V relay or 12V relay ,that is depended...
  14. waferstar

    IR receiver

    Dear, I think that is because that you may miss a  bypass capacitor 10uF between the output and the GND. And if you have any other problems,you can paste your circuit here,and that is easy for us to solve this problems for you. ======================================= Extract the Code from the...
  15. waferstar

    help digital weight scale circuit

    I think you can use a Microcontroller with A/D and also use a LCD to display. This system is not difficult,but the most important is the cost of the system. And I used to use a chip : FS9912,that maybe suitable for you to use...
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