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Type: Posts; User: alibarghi

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  1. Closed: How to estimate the actual distance of the object in image?

    156327

    The camera is 3 meters away from the playground. How do I get the actual distance between the balls?
  2. Closed: Problem with multi IP camera in emgu cv?!

    I use emgu in visual Studio 2013.
    The image of one of the cameras is cut off after a few seconds.
    What is the problem?
  3. Replies
    2
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    771

    Closed: Rotating sensor from inside

    What sensor can count the number of rounds from a rotating object from inside?
    The speed of the rotating body is about 20,000 rpm
  4. Closed: Re: What is this sensor? (Can detect the clap sound)

    Thank you very much
    This is water proof ultrasonic sensor
  5. Closed: Re: What is this sensor? (Can detect the clap sound)

    Thank you for your attention
    This is not a electered microphone because it needs to be biased،but my circuit does not have any powers and is like a piezo drive
  6. Closed: What is this sensor? (Can detect the clap sound)

    This sensor can detect a shocking sound such as clapping by a amplifier.
    This is a photo of this sensor
    154472
    154473

    What is this sensor?
  7. Closed: What is this IC? Nand flash or memory? What is part number?

    What is this IC?

    147967

    And this?

    147968
  8. Replies
    1
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    318

    Closed: DC motor 6500 rpm 2kw

    I need a DC motor that work only 15 sec per time and this specification is :
    24 V DC
    2.5 hp
    Maximum dimension: 240 mm (length), 85 mm (diameter)
  9. Closed: How to to use IMU in Video processing (Optical Tracking)?

    Hi
    how to to use IMU(Gyroscope,accelerometer ,Magnetometer ) in Optical Tracking?

    The IMU is placed on the camera and object to be tracked is on the front of the camera.
  10. Closed: hard fault error stm32 while transfer with UART (Stm32F0 )

    My program will stop sending the serial while transmit UART .
    It go to hard fault error interrupt .

    What is the cause and how can I fix it?
  11. Replies
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    799

    Closed: ADC using DMA in stm32F105, zero value.

    i use DMA in STM32F105 to reading adc 8Khz.
    my DMA buffer is 1000 .
    algorithm is hear :

    1- start timer 4 cc4 -----> 8Khz Adjusted
    2- enable ADC
    3- start ADC_ch
    4- config DMA in circular...
  12. Closed: how to create power bank 10 volt using 2 power bank 5 volt?

    i have 2 power bank 5 volt 10000 mAh . how to make them one power bank with 10 volt 10000 mAh?
  13. Replies
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    1,765

    [51]Closed: Re: how to Programming cc2530?

    thank your reply
    i have problem with "TI" sit . this is producing this error :thumbsdown:

    122875
  14. Replies
    4
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    1,131

    [AVR]Closed: Re: how to drive SDRAM with Xmega A1?

    Thanks your reply
    Xmega A1 series has EBI interface
    It can handle Sdram and sram with this interface
    But not exist any schematic for this
    Can you help me please
  15. Replies
    4
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    1,131

    [AVR]Closed: how to drive SDRAM with Xmega A1?

    how to drive MT48LC16M4A2TG (SDRAM) using xmega A1?
    please give me a simple schematic to connect MT48LC16M4A2TG to Xmega.
  16. Closed: Re: how to create adhoc network using wifi module?

    thanks your replies
    All nodes are ESP8266 . all connection are wireless. All nodes have mobility .
    I want to create manually ad hoc network Using this module and a microcontroller in addition.
  17. Closed: how to create adhoc network using wifi module?

    i have ESP8266 module.
    I want create an ad hoc network for following image. Node locations maybe changed.
    I need an algorithm to solve this problem.
    Please help me.
    122510
  18. Replies
    1
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    1,098

    Closed: how to drive esp8266-07

    i use blow circuit to test ESP8266 but not worked .

    121775

    i tested with boudrate 9600 , 115200 , 128000 , 38400 , ... But no response was received .
    Where is the problem?!!
  19. Replies
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    1,765

    [51]Closed: how to Programming cc2530?

    Does anyone source or library to start with cc2530 IC?
  20. Replies
    3
    Views
    767

    [AVR]Closed: Re: how to record voice in mp3 format ?

    Thank your replies
    I'm using a computer microphone to real Time recording sound and convert to mp3 . How can I do it?(by visual studio)
    Or How can I do this on the micro controller(8bit or 32bit)?
  21. Replies
    3
    Views
    767

    [AVR]Closed: how to record voice in mp3 format ?

    hi
    is there any IC Or code for Controlers to convert sounds to MP3 or MDI Streem Output?
    how could record mp3 format by XMega?
    which IC can Do this?
    vs1003 can play mp3 but can not make mp3...
  22. [General]Closed: Re: How to drive Digital microphone ( MEMS microphone )

    thanks your replies.
    The microphone introduced by you is analog microphone. but my microphone is digital.
    datasheet is here but There is no protocol to drive it. Help me please.

    117601
    ...
  23. [General]Closed: How to drive Digital microphone ( MEMS microphone )

    How to drive digital microphone?
    ||
    ||
    \/
    117499
  24. [AVR]Closed: How to create AD HOC network with NRF24L01+

    Hi
    How do I implement the AD HOC protocol using NRF24L01+ Modules?
    (with AVR or STM32)
  25. Replies
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    2,636

    Closed: How to soldering BGA ?

    Hi
    My Reflow soldering is shown in figure. please help me for soldering with IRDA machine . (Yaxan 862D++)

    http://obrazki.elektroda.pl/4809309500_1411309877_thumb.jpg
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