I see that the [XBee Explorer Regulated has been laid out to fit the footprint of an Arduino Pro Mini… but how do I hook it up to a Teensy 3.1?](https://www.sparkfun.com/products/11373)
Sorry, I should probably be more specific, and say that its because I already own both, and don’t want to buy a [Teensy 3.1 XBee Adapter, if I can avoid it…
Also more specifically, I realize that TX/RX/GND/VCC are needed, but that doesn’t seem to account for any “data ready”, “ready to send”, or anything like that… which, as long as the Teensy operates faster than the XBee module, no problem… but any delay, and you’re hosed…
And I should probably also say that Im trying to the Explorer up to an [RN-XV WiFly Module… not that I understand whether or not that matters…](https://www.sparkfun.com/products/10822)](Teensy 3.1 XBee Adapter - BOB-13311 - SparkFun Electronics)
Which XBee? S1? S2? they are different beasts.
If your app can avoid just blasting data to the XBee without the far end responding “OK” for each 100 bytes or less, then you need no hardware (CTS) or software flow control. There’s also the XBee binary API to consider. It has inherent flow control if you use it correctly. And there are libraries based on it. There’s one on the Teensy web site.