Actions
Forum Thread Details
  • State Not Answered
  • Replies 9 replies
  • Subscribers 393 subscribers
  • Views 1391 views
  • Users 0 members are here
Related

Arduino Due with USB Shield

elizabethmath

I have just switched from using a MEGA 2560 to an Arduino DUE. I needed the DUE because the MEGA was incapable of taking on the load I as subjecting to it. I am fairly new to electronics and arduino , so I would appreciate any help. I am using a USB shield for my project and  I have come to understand that unlike MEGA, DUE operates at 3.3 V. Hence providing anything more would only damage the board. I have been trying to figure out the schematics of my USB shield, but have gotten very perplexed about it. Can anyone please tell me if it is possible for me to use the follwing USB shield :http://www.thaieasyelec.com/downloads/EFDV521/Datasheet_Keyes_USBHostShield.pdf with my Due?

Parents
  • 0

    Don't power up both boards together yet.

     

    The picture in the document shows +3V3 and +5V both linked. On a Due, I think that would connect the +5V to the +3V3 output of the +3V3 regulator and put +5V on the processor (you really, really don't want to do that). Also, your USB +5V would be connected to the Due +5V and both would be trying to power the system (unless you are scrupulous about only having one source of power connected at a time).

     

    Unfortunately, the document refers you to a non-existent 'Power Options section,' which isn't very helpful. Perhaps you should contact the manufacturer and ask them for the link configuration given that this might lead to damage of your processor board.

  • 0 in reply to jc2048

    Hi.

    Thank you so much.

    So can I just make sure I understand you. You mean to say that I cant power BOTH of them together, meaning that I would only need to power the Due.

    Can that mean that I use the barrel connection instead of the Vin port then? Would that resolve everything?

    So as James pointed out, "The Due is indeed a 3.3V, which is the same for all Arduinos based on ARM (Due, Zero, etc)", would this be true only under the condtion that 1 power option is considered?

     

    I think we can refer to the following link ( the other website seems to have leeched off this site!

    https://www.circuitsathome.com/usb-host-shield-hardware-manual/

     

    You're so kind to have helped; hope to hear from you.

    Sorry, just a bit stressed about damaging my brand new Due!!

Reply
  • 0 in reply to jc2048

    Hi.

    Thank you so much.

    So can I just make sure I understand you. You mean to say that I cant power BOTH of them together, meaning that I would only need to power the Due.

    Can that mean that I use the barrel connection instead of the Vin port then? Would that resolve everything?

    So as James pointed out, "The Due is indeed a 3.3V, which is the same for all Arduinos based on ARM (Due, Zero, etc)", would this be true only under the condtion that 1 power option is considered?

     

    I think we can refer to the following link ( the other website seems to have leeched off this site!

    https://www.circuitsathome.com/usb-host-shield-hardware-manual/

     

    You're so kind to have helped; hope to hear from you.

    Sorry, just a bit stressed about damaging my brand new Due!!

Children
No Data