Comments on: Let’s Build an Autonomous Large-Scale Mower https://deepsouthrobotics.com/2017/03/30/hello-world/ A Gentle Introduction to the Future Wed, 06 Jun 2018 21:15:27 +0000 hourly 1 https://wordpress.org/?v=6.4.7 By: Rainy https://deepsouthrobotics.com/2017/03/30/hello-world/#comment-3067 Wed, 06 Jun 2018 21:15:27 +0000 http://deepsouthrobotics.com/?p=1#comment-3067 Things seem to have moved along since the last post here. I found this site when searching for „gnss mower“ since this is also my dream project. Since my development plan starts with a position aware moobile platform I had previously searched and found an affordable diy robot that moves about with the necessary precision: https://custom-build-robots.com/electronic/precise-gps-gnss-positioning-with-a-raspberry-pi-and-the-rtklib-introduction/8080?lang=en The author sems to have made an impressive rover that might easily be adapted for a mower. I will certainly try to copy his project to get the navigation buttoned up before moving on to the mower.

]]> By: Roby https://deepsouthrobotics.com/2017/03/30/hello-world/#comment-131 Tue, 23 May 2017 11:48:05 +0000 http://deepsouthrobotics.com/?p=1#comment-131 In reply to Al.

Hi Al! We do have the lever controls worked out, and I plan a write up of that mower in the near future.

Regarding the Navio2, I’ll be interested to hear if you decide to use it — I haven’t used it, but have been tempted to buy it.

]]> By: Al https://deepsouthrobotics.com/2017/03/30/hello-world/#comment-128 Tue, 23 May 2017 03:39:35 +0000 http://deepsouthrobotics.com/?p=1#comment-128 Have you worked out the lever controls for your mower at https://rplstoday.com/community/threads/finally-spilling-the-beans-on-rtk-gnss.330472/page-2 ?

I’m using https://www.pololu.com/product/2327 with the 12 amp controller and using code to drive the motor controller. Its not finished yet since I decided to re-mount the actuators, stopped to get RTK figured out and I’m bouncing back and forth between Pixhawk + Arduino or Navio2 as the controller.

]]> By: Roby https://deepsouthrobotics.com/2017/03/30/hello-world/#comment-45 Wed, 26 Apr 2017 02:46:40 +0000 http://deepsouthrobotics.com/?p=1#comment-45 In reply to Lee.

Hi Lee — That’s way too expensive. Check the RTK prices listed here: http://deepsouthrobotics.com/2017/04/20/spilling-the-beans-on-rtk/

$450-$900 Is the latest prices I’ve heard for good Chinese L1/L2 GPS/GNSS w/ RTK @ 10hz-20z.

Have you talked with ComNav or Unicore? Those guys are a disruptive force.

Hey man thanks for weighing in! I’m going to be creeping your blog — you better keep it updated!

–Roby

]]> By: Lee https://deepsouthrobotics.com/2017/03/30/hello-world/#comment-44 Wed, 26 Apr 2017 02:02:18 +0000 http://deepsouthrobotics.com/?p=1#comment-44 In reply to Roby.

Commercial L1/L2 isn’t cheap yet 🙁 My setup is 2 receivers (one base, one rover) with RTK @ 20Hz looking at $5k and that doesn’t include GNSS antennas, enclosures, interfaces, or the correction link which may be cellular or RF. If you want dual receiver for heading at 0 velocity you are looking at $5k for the receiver alone.

It is def not cheap, the best bet is the Swift in your RTK post, whenever that starts to support more than one constellation (GPS). Another option if you are around the $5k mark for a complete setup is RTKite, kit includes everything you need to get going including RF link (http://gnssrtkmodule.com/).

]]> By: Roby https://deepsouthrobotics.com/2017/03/30/hello-world/#comment-42 Tue, 25 Apr 2017 16:50:35 +0000 http://deepsouthrobotics.com/?p=1#comment-42 In reply to Lee.

Lee,

Your progress is OUTSTANDING! Can you advise any specific prices you’ve heard for L1/L2 receivers?

Keep up the innovating, bro!

–Roby

]]> By: Lee https://deepsouthrobotics.com/2017/03/30/hello-world/#comment-41 Tue, 25 Apr 2017 16:37:43 +0000 http://deepsouthrobotics.com/?p=1#comment-41 Nice and looking forward to see how it is going. If you get a chance we should def talk!

I started on this same path about a year ago (http://mr337.com/blog/robotic-mower/) and has the same issues with GNSS setup (http://mr337.com/blog/unmaned-robotic-mower-navigation-part-2/). In the end I needed something reliable so went with a commercial L1/L2 setup.

Here is where I am at today, https://youtu.be/uVTaHwCqPgw.

]]> By: Roby https://deepsouthrobotics.com/2017/03/30/hello-world/#comment-9 Tue, 11 Apr 2017 12:36:07 +0000 http://deepsouthrobotics.com/?p=1#comment-9 In reply to Golfman.

Thanks Golfman!

]]> By: Golfman https://deepsouthrobotics.com/2017/03/30/hello-world/#comment-6 Sun, 09 Apr 2017 18:30:05 +0000 http://deepsouthrobotics.com/?p=1#comment-6 Cool project! Looking forward to following it.

]]>