Journal of Sensors / 2017 / Article / Tab 5

Research Article

A Study on the Effects of Heavy Backpack and Development of a Preventative Prototype

Table 5

Arduino Uno technical specifications.

Microcontroller atmega328p

Operating voltage5 v
Input voltage (recommended)7–12 v
Input voltage (limit)6–20 v
Digital i/o pins14 (of which 6 provide PWM output)
PWM digital i/o pins6
Analogue input pins6
Dc current per i/o pin20 ma
Dc current for 3.3 v pin50 ma
Flash memory32 kb (atmega328p) of which 0.5 kb is used by bootloader
SRAM2 kb (atmega328p)
EEPROM1 kb (atmega328p)
Clock speed16 MHz
Length68.6 mm
Width53.4 mm
Weight25 g