I mentioned in the DAQ project that Method 4 can be used to log data by using bluetooth to send data from your phone to your Circuitplayground Bluefruit (CPB) and vice versa. Once the data is on your phone you can export the data to a text file. That basically means you can use the bluetooth module as another method to save data from the CPB. There is a lot you can do with bluetooth but for starters all code required for this module is on Github. This chapter walks through how to write some example bluetooth code and get the app to receive the data on your smart phone.
