Changing GPS update rate (Sparkfun GPS Logger Shield)

Hi there,

I’ve got a Sparkfun GPS Logger Shield ("The shield is based around a GP3906-TLP GPS Module – a 66-channel GPS receiver featuring a MediaTek MT3339 architecture and an up to 10Hz update rate. ")

How do I increase the update frequency from the default 1Hz, to something closer to the advertised 10Hz? The datasheet that Sparkfun provide (https://cdn.sparkfun.com/assets/learn_t … ev_A01.pdf) does not address this.

Thanks for any assistance.

Unfortunately I don’t have a manual specific to the GPS receiver on our shield and I can’t confirm this manual works, but the link below is the NMEA manual for a MediTek receiver and it might work. Best I can tell our shield uses a module with the MediTek chipset.

  • https://whitebream.nl/files/product/Fas … Manual.pdf
  • Keep in mind that you need to calculate a checksum for every command you send your GPS and if the checksum is wrong, the GPS will not accept your command. [This calculator will help you with calculate the correct checksum for your NMEA command string.](https://nmeachecksum.eqth.net/)