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My first shield back,Integrates a variety of sensors.

Discussion in 'Sensors and Actuators' started by Ninjia Chen, Nov 18, 2014.

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  1. Ninjia Chen

    Ninjia Chen

    10
    0
    Nov 7, 2014
    I had received a lot of advice.They point out my mistakes to help me improve.I am very grateful to them.After a modification over time, I sent my gerber files *SPAM REMOVED* and production. I changed a lot, I was going to use PCF2129 replacement DS1307, but PCF2129 is expensive so I had to give up.I also modified schematic.
    [​IMG] I had made a serious mistake, because avr328 output is 5V, but many modules work in 3.3V. If the direct connection, it may cause some unexpected problems. In the end, I had to drastically modify my schematic.I use the relevant characteristics of the NMOS.I made a simple level conversion circuit to make sure the system compatible with 5V and 3.3V.
    In addition, according to the recommendation of some friends, I added MPU6050 as an acceleration sensor and an acceleration sensor. Now I have a complete PCB board 9-axis motion chip, it can know your stance and direction.
    Many times, some projects need to use an SD card to store some parameters or some other data, I integrated the MicroSD card on the shield,I also set up a separate power jumper cap for each module, so that you can turn off some of the features when you does not require the use of certain modules.
    [​IMG]



    [​IMG] [​IMG] [​IMG]
    PCB board quality is very good, I designed a small PCB silk screen. It's clear.I recommend *SPAM REMOVED*, Especially its online online quote system is very convenient, as long as you enter the dimensions and other requirements, the site can calculate the quote.
    After I received my element, I will test each module. I will share my code.
     
    Last edited by a moderator: Nov 18, 2014
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    Your images don't show, you need to upload them here.

    Also, I have removed your spam.
     
  3. Ninjia Chen

    Ninjia Chen

    10
    0
    Nov 7, 2014
    OK, but I don't know how to edit posts which have been published.I can't find the edit button on the page.
     
  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,500
    2,840
    Jan 21, 2010
    Just place them in a new post.
     
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