联系我们

  • GPS GPRS 开发板 stc12c5a60s2 S...Alfred @ 2013-03-14 19:41Hello, we bought and received above GPS-GSM-GPRS-board from one of your distributors (laserlands). Unfortunately there was no description (user guide) of the board or any sample software included in the package. Without description we do know not what the pin-headers and jumpers mean and how to use the board. Eg what is the baud rate, etc for the serial communication, how and by which commands is the board controlled (GSM, GPS, …) and so on?

    We kindly ask you to tell us where we can download a user guide and sample software (preferably in English) to us. We tried to find this on the home page but unfortunately we cannot read Chinese.

    With best regards

    Alfred

    admin REPLY@ 2021-07-08 22:37

    send to you by email a.plicka@aon.at

  • GSM GPRS GPS STM32 Development...Marcos @ 2013-02-22 11:50Hi Jesse, it's Marcos, from Buenos Aires, Argentina.
    I want to buy the SIM908 STM32 development board on sale in taobao; this is an url of the item from a taobao agent:
    http://www.yoybuy.com/en/show/15052647745/
    but first I need to ask you several technical questions:
    * what is the 3rd MAX3232 IC for if there are only 2 serial ports to use at the same time?
    * how are the 2 serial ports, 3 MAX3232 IC's, SIM908 module and microcontroller connected?
    * can you provide the schematic for me to be sure before I buy it? (all the documentation you can give will be very useful)
    * firmware is downloaded to microcontroller via UART right?
    * serial to USB adapater is included?
    IMPORTANT: I need the external GPS and GSM antennas, are they included? if they are not, can you add them to the package? I plain to buy through a taobao agent, yoybuy.com, how can I include the antennas if they are not already included? Or maybe I can buy directly from you to make it easier.
    Thank you and best regards,
    Marcos.

    admin REPLY@ 2013-02-26 21:24

    1.3 MAX3232 can use the GPRS the GPS MCU TTL convert 232 level can then access the PC to do the test.

    1.2 Jumper MCU can access modules.

    1.3 be downloaded via the serial line, or jlink download simulation

    1.4 can use the USB to serial cable

    1.5 to send GPS antenna GPRS GSM antenna power serial line.

  • sim900工作时数据问题小王 @ 2012-11-04 15:08小弟问你个事呗,这sim900工作时,数据是在哪里存的?
    是在主控芯片的缓存里,还是在
    板子上另外加其他什么的存储设备?希望能指点下,qq上一致没人回答啊

    admin REPLY@ 2012-12-26 09:27

    GSM短信可以配置为直接输出,一般都可以先将数据存到到MCU的中.

    GPRS数据内部有缓存区,一般都可以先将数据存到到MCU的中.

  • 你要问的内容你的订单号 @ 2012-10-29 00:37这里具体

    admin REPLY@ 2012-10-29 00:38

    这是个示例,我的回答在这里

4条记录
发表留言 (* 为必填项目)
*标题:
*姓名:
*邮箱:
联系方式:
*内容: