Characterization of Urban Bus Acceleration Cycles for Fatigue Analysis with a Portable Low-Cost Acquisition System

Table 3

Arduino UNO features.

Characteristic	Value
Supply voltage	7-12 V
Processor	Atmega 328
Clock frequency	16 MHz
Flash memory	32 kB
Analog input pins	6
Digital I/O pins	14 (6 provide PWD output)
ADC converter	10 bits
Analog signal range^1	0 V to 3.3 V
Analog signal resolution^1	0.0032 V

¹Reference voltage 3.3 V selected, in accordance with accelerometer output voltage.