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Start Data Logging. Now you can write data to the SD card. First, open the “Datalogger” example sketch (File > Examples > SD > Datalogger) and upload it to Arduino. This sketch reads the value from ...
[David] used Oboe, a high performance C++ library for Android audio apps, to create the required waveform. The 8-bit data chunks he sent can only make up 256 unique messages, so he pre-generated them.
It is an Arduino compatible board (hardware, not footprint) based on the ATMEGA1284P which can be programmed to collect and post data to internet logging sites such as Thingspeak or Xively.
The extendable Arduino GPS data logger consists of a shield, that is fitted with the GPS receiver, SDcard reader and the accelerometer, together with an Arduino UNO board ...
The Arduino compatible Pax Instruments T400 Temperature Datalogger is now available to purchase priced at $175 from Adafruit. If you liked this you might also be interested in building an Arduino ...