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  1. This is regarding your product "USB Adapter board for kiosk computer" and the software that comes along with it, "Panel" I bought 30 of them and I needed more, however there was a problem with the software that came along with it, the email feature and from time to time it doesn't give credit to the time after inserting coin. The email feature doesn't send an email and actually it gives error if I will do a manual test to send an email to the email address that was assigned to received the email report. I spoke with your supposedly technical support over skype, skype id Frank, and promised me to get back at me to look into the problem, that was last August/September but until now I never get an answer from your company. Maybe through here, electronics-lab community someone from your company would provide me an answer.

  2. 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. 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. 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. 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. 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 copy or improve it. A process that was originally applied only to hardware, reverse-engineering is now applied to software, databases and even human DNA. Reverse-engineering is especially important with computer hardware and software. Programs are written in a language, say C++ or Java, that's understand
  7. Welcome to cooperate with companies or persons from all the world. Hope we can become good friens. Shanghai/China
  8. 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. ============================================================ Extract the code for you from the protected MCU for legal use! Overseas Market Department: Tel:+86-21-68458945 Fax:+86-21-50454820 wafer@waferstar.com MSN:frank_ic2001@hotmail.com www.wafersensor.com http://listing.hk.business.yahoo.com/en/13945/index.html
  9. 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 to control the sensors to start or stop to get the data. ============================================== Extract the code from the Protected MCU. We provide the best MCU service. www.wafersensor.com wafer@waferstar.com
  10. 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 if you need any other project ,we can develop them for you. If you want to get more detail ,please send me mail about these project. wafer@waferstar.com www.wafersensor.com Spring
  11. 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. 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 use the adjustable resistance ,and the NE555,to output the different pulse width to control the MOS and then can adjust the DC motor. ================================ 1.Extract the code for you from programed Mcu for legal use 2.Specilized in the Microwave sensor,automatic door sensor,infrared sensor
  13. 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 on what you want . ================================ 1.Extract the code for you from programed Mcu for legal use 2.Specilized in the Microwave sensor,automatic door sensor,infrared sensor 3.OEM PCB and design for you in China www.wafersensor.com wafer@waferstar.com
  14. 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 Programed Mcu For you for legal use Frank Shanghai Wafer Microelectronics Co.,Ltd www.waferstar.com wafer@waferstar.com
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