To prevent the system from drifting too far out of sync when it doesn’t have a lock on the GPS signal, [Cristiano] is using a DS3231 I2C real-time clock module that features a high accuracy ...

TomTom creates navigation devices and software. The company offers portable GPS units, maps and traffic services designed for easy use and precise guidance. Since its founding in 1991, TomTom has ...

It offered 10-meter accuracy and remained in use until ... Retailing for $3,000, this was the first GPS device that was truly portable. Perhaps the most notable development during this period ...