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Recent content by 313230

  1. 3

    How hard to design smartphone, tablet..?

    Hi everyone, The mobile market is rapid growth, but it seems like a closed system, i.e in the old days people can build they own PC and have great knowledge about what is inside it (PC) but not many discussion about building smartphone or tablet can be found.. IMO, building them is not rocket...
  2. 3

    Low cost, high security IC for encryption?

    Many thanks
  3. 3

    Low cost, high security IC for encryption?

    Dear tpetar, Hi security is defined by IC widely in use and hasn't been hacked yet. The device need to encode the stream of data, just normal text Data is decoded in other place, but my device need encode/decode some hi secure algorithm for activation, XTEA, AES.. etc Regards.
  4. 3

    Low cost, high security IC for encryption?

    Hi, I need a high security IC for encryption app. Normally microcontroller can be used to calculated high security algorithm, but it can be hacked by a budget less than 1000$ using many decap method. Is there any dedicated IC or microcontroller for security out there? Many thanks
  5. 3

    Tactile sensing method on uneven surface?

    Thanks, I need to detect the point of contact in the surface coordinate, like the Apple magic mouse or the Microsoft's multi touch one, they have curved surface. I don't have them or know how they work, I think they use capacitive sensor, mine is similar but I don't need the multitouch...
  6. 3

    Tactile sensing method on uneven surface?

    Hi, I need detecting the contact position on surface that isn't level, say the surface of a sphere or the like, which method should I use? Also need high resolution: sub millimeter and the cost as low as possible Thanks
  7. 3

    How to create a rectangle cut in ARES?

    Hi, I need to make rectangle sockets for a component, those pins are not in use but needed to put the component on board, although need to cut some area to make the PCB fit in the case. As all drill holes are circular, how to make a precise rectangle cut? Thanks **broken link removed**
  8. 3

    Using HID to communicate pic 18F4550 with PC via USB?

    Dear all, I tested the HID USB mouse which is plug-and-play. Is there any way to send data back to mCU using HID? Regards.
  9. 3

    Sensor for tracking distance with lower than 1mm accuracy??

    Hi everyon, I need to track a small object from a fixed position with 1mm accuracy, just need to know how far it is. What kind of solution do I need? Thanks in advance
  10. 3

    Help: Cheapest USB controller for industry???

    Hi, I need the cheapest USB controller for industry use, found microchip 18F13K50 ~ 1.5$ at quantity. Need: Under 10 I/O ports, I2C, USB full speed or low speed (in some cases) Is there any cheaper solution? Thanks in advance
  11. 3

    Newbie: I want to build a mouse with 2 sensor

    Thank you all for answer! @ The Joy of Electronics: I think that every units have input and ouput. If I know how to fill the input then take the output infos. The input is only the voltage and the current is AC or DC. Then know how to provide the output signal to USB, and deal with them by...
  12. 3

    Newbie: I want to build a mouse with 2 sensor

    Hi everyone! I have ideas like this: A normal PC mouse can track movement on 2D, x and y signals. A mouse build with 2 sensors, one provide x, y, the other provide x' and y' signals. From the amount of the movement of each sensor can point out how much the mouse has been rotated If the mouse...
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