Caveat: I did not create any of these documents myself - I just collected them and published them here for easier access, because I have been unable to find a public list at Skytraq with all the documents.
Skytraq (and others) created them and own the copyright.
Note that while the documents are copyrighted, none of them are marked as confidential nor were they obtained under NDA. I am therefore free to re-publish them like this.
Official Application Notes from Skytraq.
| Name | Version | Date | Title |
|---|---|---|---|
| AN0003 | 1.4.24 | 2013/06/18 | Binary Messages of SkyTraq Venus6 GPS Receiver |
| AN0026 | 0.3 | 2014/02/19 | 4-hour ROM AGPS Extension for Venus6 & Venus8 |
| AN0028 | 1.4.42 | 2017/07/24 | Binary Messages of SkyTraq Venus8 GNSS Receiver |
| AN0030 | 1.4.33 | 2017/06/08 | Binary Messages Raw Measurement Data Extension of SkyTraq Venus8 GNSS Receiver |
| AN0031 | 3 | 2014/05/22 | I2C NMEA for Venus8 GNSS receiver |
If you have an Application Note that isn't featured on the above list (or a newer version) that you can legally pass along, make a pull request and I'll update the list.
Older SiP (System-in-Package) module with up to 10Hz (later 20Hz) update rate.
It looks like that the Venus638 has become End-Of-Life (EOL). Use the Venus838 module instead, except for a few commands, it is directly software compatible with the Venus638.
Current SiP (System-in-Package) module with up to 50Hz update rate in the Flash-based GPS-only version (see S1216F8), and up to 921.600 baud.
The are a number of PCB-module variants supporting several GNSS systems (GLONASS, Galileo, Beidou), Dead Reckoning, Raw Measurements, Disciplined Clock, and High-Precision RTK. See the [DM-V1.5.pdf](Selection Guide).
GNSS baseband processor, supporting GPS and either Beidou/GLONASS (depending on RFIC front-end used), Standard Precision, and up to 115.200 baud. Update rate is TBD.
Documentation made by other companies than SkyTraq.