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I am trying to determine the components I may need to use an NFC sensor to control a solenoid. The amount of space I have to work with is very small - approximately 1 inch. The solenoid I have in mind is less than 1/2" long and can be viewed here - http://www.ebay.com/itm/like/191921105068?chn=ps&dispItem=1

To clarify the problem I am trying to solve. The idea is to have a smart phone app control this entire process and to record all actions. Trying to create a "smart" personal device. The solenoid would serve to "flip a switch" on the device. Again, I have very limited space. I want the required close proximity of the NFC as a security feature to turn on the personal device. The process would be to open the app, key in a PIN, touch phone to device to turn on, touch phone to device to turn off.

The specific questions are:

  1. Which very small NFC sensor could best service the purpose of communicating with a smart phone and somehow sending the signal to the solenoid?
  2. Would I need a micro-controller to make the NFC send the signal to the solenoid? Is so, which very small controller would meet this need?
  3. Am I missing anything else? I know I need a battery source.
Aurora0001
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user25441
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1 Answers1

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  1. Let presume that you want to send info/input/command to the solenoid via smart phone with enabled NFC. In that case you need NFC reader to establish communication with NFC enabled smart phone. NFC sensor/reader can be found on amazon.com or on alibaba.com, let say device as you can find on this link.

  2. NFC reader should transmit data to the MCU/IoT Board/PC/Raspberry Pi/Arduino so you can process input data and make decision what you want to do with solenoid activate/deactivate. Cost-effective solution for board capable to do this job can be TopDuino found on link.

  3. In order to issue command to the solenoid I suggest to use RELAY device. SugerCube can do this job.

  4. So, most probably you will need architecture like bellow:

    NFC<-->IoT.Controller<-->Actuator<-->Solenoid
Amit Vujic
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