So, I am looking to make a very simple device that can work as a secondary screen for the maps app on my phone so that I can attach it to my bike and see the direction with having to use a cellphone holder.

The maps will use the GPS from the phone and will transmit the direction to the pi's display. and the communication will be over Bluetooth.

thanks for the help.

  • For the secondary screen, you can use any small screen like this one: (1) raspberrypi.stackexchange.com/questions/105364/…, (2) Rpi BlueTooth BlueZ5.x is still buggy, so perhaps you can use a cheapie GPS module and use Rpi GPSD to get more useful data direct from GSP module: raspberrypi.stackexchange.com/questions/98840/….
    – tlfong01
    Commented Nov 17, 2019 at 7:52
  • 1
    The reason I dont want to have a gps module is the I want to keep it really light weight , in terms of processing, complexity and literally. Commented Nov 17, 2019 at 9:26
  • I agree with you that space and weight are important factors to trade off. But human time, I mean unreliable, often intermittently Bluetooth pairing but then disconnecting time wasting problem is a always problem that won't go away. Anyway, I am waiting for perhaps one more year for coming Rpi5 and BT6 to smooth out things. Cheers.
    – tlfong01
    Commented Nov 17, 2019 at 9:53
  • 1
    Hope ! .Working on it ! Commented Nov 17, 2019 at 10:44
  • 1
    I'll keep you posted, 👍 Commented Nov 17, 2019 at 12:43


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