DragonOSD+ GPS modules
Posted: Thu 28 Jan 28 2010 6:32 pm
At the point of writing, there are only three viable choices of GPS families on the market that offer update rates of greater than 1Hz and still reasonably affordable. The three families are MediaTek (MTK), Antaris (u-blox) and SkyTrax (Venus). The most common of these are the MTK based modules, which include models such as LS20033, LS20031, EB-85A, and other. Many companies offer GPS'es based on the MTK chipset. They were the first to offer economical 5Hz modules and have recently updated their units to 10Hz capability.
http://www.rcgroups.com/forums/showthre ... ht=locosys
http://www.sparkfun.com/commerce/produc ... ts_id=8266
http://www.sparkfun.com/commerce/produc ... ts_id=8975
http://www.dpcav.com/xcart/product.php? ... 250&page=1
The next chipset, the Antaris, comes from Atmel, and offered up to 4Hz capability although it has been mentioned that some of the newer ones might even handle up to 10Hz. The u-blox modules uses this chipset and has been noted for its good accuracy as compared to the MTK chipset. GPS modules such as the GS407 would be an example of such a product.
http://www.sparkfun.com/commerce/produc ... ts_id=9436
http://www.sparkfun.com/commerce/produc ... ts_id=9566
http://store.diydrones.com/ProductDetai ... -GPS-GS407
The SkyTrax offering uses the Venus chipset and is capable of 10Hz update rates. This is a rather new module and it is uncertain at this point if there will be many modules based on this chipset. Sparkfun does, however, offer two boards that use the chipset and they appear to work quite well when paired with an active antenna.
http://www.sparkfun.com/commerce/produc ... ts_id=9758
http://www.sparkfun.com/commerce/produc ... ts_id=9133
http://www.sparkfun.com/commerce/produc ... ts_id=9171
Unfortunately, the previously very popular SiRF III chipset still does not support more than 1Hz update rates and so they would not be particularly suitable for use with GPS based autopilots. This would include modules such as the EM-406. Daniel
http://www.rcgroups.com/forums/showthre ... ht=locosys
http://www.sparkfun.com/commerce/produc ... ts_id=8266
http://www.sparkfun.com/commerce/produc ... ts_id=8975
http://www.dpcav.com/xcart/product.php? ... 250&page=1
The next chipset, the Antaris, comes from Atmel, and offered up to 4Hz capability although it has been mentioned that some of the newer ones might even handle up to 10Hz. The u-blox modules uses this chipset and has been noted for its good accuracy as compared to the MTK chipset. GPS modules such as the GS407 would be an example of such a product.
http://www.sparkfun.com/commerce/produc ... ts_id=9436
http://www.sparkfun.com/commerce/produc ... ts_id=9566
http://store.diydrones.com/ProductDetai ... -GPS-GS407
The SkyTrax offering uses the Venus chipset and is capable of 10Hz update rates. This is a rather new module and it is uncertain at this point if there will be many modules based on this chipset. Sparkfun does, however, offer two boards that use the chipset and they appear to work quite well when paired with an active antenna.
http://www.sparkfun.com/commerce/produc ... ts_id=9758
http://www.sparkfun.com/commerce/produc ... ts_id=9133
http://www.sparkfun.com/commerce/produc ... ts_id=9171
Unfortunately, the previously very popular SiRF III chipset still does not support more than 1Hz update rates and so they would not be particularly suitable for use with GPS based autopilots. This would include modules such as the EM-406. Daniel