Roby
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  • Robertsdale, AL
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Don't Be Ripped Off Buying RTK GPS

Started this discussion. Last reply by Roby Jul 21. 18 Replies

Guys,If you need precise GNSS for your robots then you need RTK. If you don't know much about RTK, you may lose a lot of money (and hair) on weak RTK GNSS systems. I've written a post to show the…Continue

 

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Roby replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Hyun, Have you inquired to Andy at ComNav directly? Keep in mind, if you can't get a good price on the k501g, that you can pick up Unicore's UB352 (GPS/GLONASS L1/L2 20hz) for…"
Jul 21
Hyun Yoo replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Roby, I inquired four Chinese companies the price of K501G(K100G for some of them). I asked my Chinese friend in China to do that for me. None of them suggested price you noted. not even close. actually double. Price is almost same as Trimble BD970.…"
Jul 21
Roby replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Hi Adam, Thanks for reading!  Few thoughts: Have you contacted Swift and asked for a refund?  I think you may find you'll be $1000 richer without much headache :)  I was able to do several hours of field testing with the Reach…"
Apr 30
Adam replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Hi Roby, I really enjoyed reading your blog post! Unfortunately, I also purchased the Piksi, and have not had good experiences with it. And now that both the Piksi and SBP protocol have reached their End-of-Life, I don't think there's much…"
Apr 30
Roby replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
Apr 26
Noli Sicad replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"What flight controllers working on k501g? Is Pixhawk1 working on k501g?"
Apr 25
Roby replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"600-900 USD in low quantity, depending on RTK output rate (price quoted last year -- should less now)"
Apr 25
Noli Sicad replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"How much is this unit - k501g? Less than USD 300 per unit?"
Apr 24
Roby replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Henrik -- I'm inclined to take you up on your offer. I've got access to an Emlid Reach. Looks like we need to set up a k501g vs M8P vs REACH shown down!"
Apr 22
Henrik Christophersen replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Roby, Yes x 3.  Preliminary data sheet is attached.  However, before selling it and joining your list of undesirables :), we really need to do more testing.  If you are up for it, I can get you a system. …"
Apr 21
Roby replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Henrik, Your board with the positional LEDs is super slick. I'm digging that! Did you design it? Is it open source / or are you going to market it? Hey, you're absolutely right that "tough environment" isn't at all…"
Apr 21
Henrik Christophersen replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Roby, Those are good questions and I will get you answers!  However, because GPS conditions change continuously, we'll have to come up with some measurement metrics - something meaningful to compare performance to.  For example, we…"
Apr 21
Roby replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Thanks Henrik! I'd love to hear more about the M8P's performance in tough environments. Also, can you speak to it's re-acquisition time after losing fix?"
Apr 21
Roby replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Chris, out of curiosity I tried the Piksi again a month or so back -- performance still bad."
Apr 21
Henrik Christophersen replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"Roby, Very interesting article.  Since 2000 I've used Novatel and uBlox receivers on various UAVs, particularly VTOL.  The early uBlox receivers were so-so with firmware changes from uBlox making us lose hair when one…"
Apr 21

3D Robotics
Chris Anderson replied to Roby's discussion Don't Be Ripped Off Buying RTK GPS
"BTW, I have a Piksi, too, but never got it working well. Should I give up, or have the software updates in the past year or so made it semi-usable?"
Apr 21

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About Me:
Husband of 1, Father of 3, Programmer & Roboticist
Please tell us a bit about your UAV interest
Large off road rovers
Hometown:
Robertsdale, Alabama

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