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#1 2017-08-13 15:07:09

wohaj
Contributor
Registered: 2017-08-12
Posts: 4

[solved] Use acr122u as 13.56MHz antenna?

Hi all,
Just wondering whether it is possible to use acr122u as a 13.56 MHz Antenna for pm3.
I understand that acr122u is designed to work individually. Since it does a good job reading and writing at 13.56Mhz, I suppose its antenna could work with pm3. But acr122u comes with USB Type A instead of 4 pin connector, so I’m not sure how I can connect acr122u to the antenna connector on pm3.  Has anyone tried this? Did it work? How many volts did it reach?
Thanks in advance!

Last edited by wohaj (2017-08-28 16:04:17)

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#2 2017-08-28 13:35:11

app_o1
Contributor
Registered: 2013-06-22
Posts: 239

Re: [solved] Use acr122u as 13.56MHz antenna?

You need to take the antenna "out of" the acr122u.
Open it and have a look inside. Is it a PCB printed antenna?

Have a look here, that will give you a decent antenna.
Or here if you want to go hardcore level.

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#3 2017-08-28 16:03:55

wohaj
Contributor
Registered: 2017-08-12
Posts: 4

Re: [solved] Use acr122u as 13.56MHz antenna?

app_o1 wrote:

You need to take the antenna "out of" the acr122u.
Open it and have a look inside. Is it a PCB printed antenna?

Have a look here, that will give you a decent antenna.
Or here if you want to go hardcore level.

Thanks! I successfully took the antenna out of acr122u and made a 4 pin connector for it. It works fine with my pm3.

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#4 2017-08-28 19:43:20

Dot.Com
Contributor
From: Hong Kong
Registered: 2016-10-05
Posts: 176
Website

Re: [solved] Use acr122u as 13.56MHz antenna?

Send a photo across. I believe some guys will be interested in this too.


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