Difference between revisions of "GPS"
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== MTK MT3318 == | == MTK MT3318 == | ||
=== Enable 5 Hz == | === Enable 5 Hz === | ||
The default update frequency is 1 Hz, or once per second, the MTK chipsets support 5 Hz. | The default update frequency is 1 Hz, or once per second, the MTK chipsets support 5 Hz. | ||
| Line 16: | Line 16: | ||
> $PMTK300,200,0,0,0,0*2F | > $PMTK300,200,0,0,0,0*2F | ||
== Hacks == | === Hacks === | ||
* [http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=81990#508553 Enable commands over Bluetooth] | * [http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=81990#508553 Enable commands over Bluetooth] | ||
Revision as of 16:38, 30 March 2008
As of today (March 2008) the two best GPS chipsets available are the SiRF Star III and MTK MT3318. They offer fast initial fix and can utilize weak GPS signals by massive parallel correlation computing power [1].
SiRF Star III
SiRF commands
MTK MT3318
Enable 5 Hz
The default update frequency is 1 Hz, or once per second, the MTK chipsets support 5 Hz.
> $PMTK300,200,0,0,0,0*2F > $PMTK251,115200*1F > $PMTK300,200,0,0,0,0*2F
Hacks
MTK commands
Other chipset brands
- SkyTraq
- Nemerix
- uBlox
- uNav
- Sony
- Fujitsu
