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My first shield back,Integrates a variety of sensors.

Ninjia Chen

Nov 7, 2014
10
Joined
Nov 7, 2014
Messages
10
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.
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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.
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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:

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
Joined
Jan 21, 2010
Messages
25,510
Your images don't show, you need to upload them here.

Also, I have removed your spam.
 

Ninjia Chen

Nov 7, 2014
10
Joined
Nov 7, 2014
Messages
10
OK, but I don't know how to edit posts which have been published.I can't find the edit button on the page.
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
Joined
Jan 21, 2010
Messages
25,510
Just place them in a new post.
 
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