title: Do you recommend TTL, SPI or I2C with SunSPOT
body: <p>I am starting to try to interface with some external components (Skyetek M1 Mini or M1 RFID scanner) than supports the following protocols TTL, SPI or I2C. I am wondering which one of these routes you would recommend. The app that is running on the spot needs alot of processing time (a continuously running gesture matching algorithm) and is fairly resource expensive. </p>
  
  <p>Any links or sources on the topic would be greatly appreciated.</p>
  
  <p>Helpful links I found:</p>
  
  <p>TTL: </p>
  
  <ul>
  <li><a href="https://projectsunspot.com/docs/Purple/javadoc/com/sun/spot/sensorboard/EDemoController.html" rel="nofollow noreferrer">Function Listing</a> including those for
  UART control.</li>
  <li>Does not seem to have good buffer control according to <a href="https://www.sunspotworld.com/forums/viewtopic.php?t=763" rel="nofollow noreferrer">this</a></li>
  </ul>
  
  <p>Thanks for your help.</p>
  
  <hr>
  
  <p>Edit:</p>
  
  <p>If it helps the device I am trying to interface with is the Skyetek <a href="http://www.skyetek.com/ProductsServices/EmbeddedRFIDReaders/SkyeModuleM1/tabid/82/Default.aspx" rel="nofollow noreferrer">M1</a> and <a href="http://www.skyetek.com/ProductsServices/EmbeddedRFIDReaders/SkyeModuleM1mini/tabid/338/Default.aspx" rel="nofollow noreferrer">M1 mini</a>. The platform/CPU is the Sun <a href="https://www.sunspotworld.com/" rel="nofollow noreferrer">SunSPOT</a>.</p>