Hello everybody to this fine forum and sorry for my bad english.I have bought the above Sanav GPS module for my UAV quadrotor project, but i noticed that when i moved 5-10 meters horizontaly nothing changed at the lat/long/altitude indications. This test made in clear sky with 8-9 sattelites, 3D fix, and good signal.While i was going with my car the indications was running. This is very bad for UAV application.Has anyone tested the above receiver (or even Etek EB-85A)?If this receiver is not ok have you to suggest me any GPS that when you move 1 meter to show that you have moved 1 meter horizontal or/and vertical (even inaccurate), like my old Carcomm bluetooth GPS receiver which was instantly (atfer 1 second change the indications even if i was moving for centimeters). EM-406 maybe?Before i bought it i had read the best words for this module on internet (fast 5Hz, accurate, sensitive) and now i m dissapointed...Please help me , this is my second GPS module after GPS-41M which was not working.
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Well, just informed by Sanav that the receiver is not operating well at all at 5Hz at speeds lower than 7km/h . So we have to set it up at 1Hz !!! So if you need to just hover and retain possition of a heli you must forget 5Hz. For airplane these specifications are not a problem cause it is moving all the time (of course >7km/h).
I still dont know what is happening when you are moving slowly only at vertical direction.
Please give me your experimental results if you have.
I m keeping testing the module and i ll come back when i have more results
ahh....i had just ordered 2 FV-M8 gps modules...
Hmm, in overall, comments for the FV-M8 (formerly known as EB-85A) are positive.
fyi, the default setting of it is 1Hz, and you need to change it to 5Hz everytime u powered it up unless u have a backup batt or a microC to do the job.
Look Here for more info.
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Havent used it, but it claims 5Hz and <2.5m accuracy.
I would like to find a gps with a good deal of relative accuracy.
Please send to uni_utec@yahoo.com
Thanks and regards.
I still dont know what is happening when you are moving slowly only at vertical direction.
Please give me your experimental results if you have.
I m keeping testing the module and i ll come back when i have more results
Hmm, in overall, comments for the FV-M8 (formerly known as EB-85A) are positive.
fyi, the default setting of it is 1Hz, and you need to change it to 5Hz everytime u powered it up unless u have a backup batt or a microC to do the job.
Look Here for more info.