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Never Ride Alone
NRA allows us, in case of bike accident, to locate the injured person through the Sigfox network. It also improves visibility on the road. For this build, I am using an Arduino MKR1200, a Neo 6-m GPS, a button, 2 leds, one 1k Ohm resistor, a buzzer, a vibration sensor and a 3.7v 150mah battery.