What is an Arduino?
An Arduino is essentially a microcontroller that can be used to develop interactive products. It has both open source hardware and software. It has digital and analog inputs and outputs. It can be powered and interfaced with via USB. It can also run on its own external power source (as was done for this project). More information can be found at the following website: http://www.arduino.cc/en/Guide/Introduction.
How does the code run standalone (without connection to the computer) on the device?
The Arduino board has enough internal memory to store programs written using the Arduino IDE. However, it does not have enough memory to store outputs of programs. For this reason, an SDcard shield was required to provide space for the outputs of programs to be stored and read later.
How does the Arduino run untethered?
The Arduino is capable of handling between 7-12 V for power. For this project, a 9V battery was used. It can be directly connected into the Vin and GND. In addition, a 9V battery adapter can be adapted to a 2.1mm power plug and be plugged directly into the power input on the board. Instructions to do so can be found here: http://playground.arduino.cc/Learning/9VBatteryAdapter.
How does the accelerometer interface with the Arduino?
The accelerometer uses the first three analog input pins on the Arduino board to input data. The data is sent as a set of three numbers; the x acceleration, the y acceleration, and the z acceleration. This data can then be processed by the board or stored for later retrieval.
An Arduino is essentially a microcontroller that can be used to develop interactive products. It has both open source hardware and software. It has digital and analog inputs and outputs. It can be powered and interfaced with via USB. It can also run on its own external power source (as was done for this project). More information can be found at the following website: http://www.arduino.cc/en/Guide/Introduction.
How does the code run standalone (without connection to the computer) on the device?
The Arduino board has enough internal memory to store programs written using the Arduino IDE. However, it does not have enough memory to store outputs of programs. For this reason, an SDcard shield was required to provide space for the outputs of programs to be stored and read later.
How does the Arduino run untethered?
The Arduino is capable of handling between 7-12 V for power. For this project, a 9V battery was used. It can be directly connected into the Vin and GND. In addition, a 9V battery adapter can be adapted to a 2.1mm power plug and be plugged directly into the power input on the board. Instructions to do so can be found here: http://playground.arduino.cc/Learning/9VBatteryAdapter.
How does the accelerometer interface with the Arduino?
The accelerometer uses the first three analog input pins on the Arduino board to input data. The data is sent as a set of three numbers; the x acceleration, the y acceleration, and the z acceleration. This data can then be processed by the board or stored for later retrieval.
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