Multiple readers more than 9

[cybersersupremo]

Hi, im having a lot of problems with connectin 9 readers.
For the moment i have working 9 but sometimes 1 dont response, not always the same , but only if i connect to the computer.
But if i connect to the power supply,only works 4 or 5 ,but no more.

i tried a lot of things, i want to try tomorrow to slow down the SPI_CLOCK, where i can t o put the CLOCK DIVIDER, i can use in my sketch after the init of the SPI. or do i have to change in the library?

Any more ideas?
Regards

[Rotzbua]

9 devices are a lot. I think you operate on the physical maximum of supply and signal.

[cybersersupremo]

And what can i do? can i use an external power supply or something?

Now i have working perfectly with usb, but if i use a power supply does not work, possible noise?
any idea for solve it?
thanks

Date: Wed, 3 Aug 2016 15:16:08 -0700
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CC: migu3l_ang3l@hotmail.com; author@noreply.github.com
Subject: Re: [miguelbalboa/rfid] Multiple readers more than 9 (#227)

9 devices are a lot. I think you operate on the physical maximum of supply and signal.

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[Rotzbua]

No, idea. It is not a software problem, so please close this issue.
Ask https://forum.arduino.cc/ ..