GitHub - dlebed/STM32-GPS-Tracker: Mirror of the ChibiOS SVN repository (updated every 10 minutes)
GE863 GPS Tracker : X893
Free Shipping STM32 product level GPRS, GSM and GPS integrated secondary development platform supports Keil direct development|gps navigation system for car|gps germangps gsm car - AliExpress
A DIY GPS tracking device for hikers | Embedded Lab