Search found 119 matches

by Raess
Tue Apr 17, 2018 7:50 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Always happy to share Timber Haint. :-)

Update:
The robot got eyes! Before mowing along with the design of the nose I needed to confirm the field of view. Running Intel® RealSense™ ZR300 over ROS.
Video of test here:
https://www.youtube.com/watch?v=fTPpbqmSl9k
by Raess
Tue Apr 17, 2018 12:16 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Testing the 3D printed front nose. Looks quite good. Minor adjustments needs to be done. Printed with PrimaSelect PETG @240C, 85C bed, 3shells and 15% infill (Very solid outcome). Countersink need to be adjusted to cut the body. The Integrated ZR300 camera need some cover on the back. Check if one c...
by Raess
Sat Apr 14, 2018 7:43 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Saturday's fun. Printed mounting brackets for the front wheels (Please note that this is only test wheels before I make an effort the design some new ones with bearings etc. The brackets came out great. Following the contours of the body and blended in quite good. This parts was also printed with PE...
by Raess
Sat Apr 14, 2018 7:40 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

@zemlin I am sure you are right. This was the first time for me printing Carbon. But my conclusions are that is not worth spending these extras bucks because the overall strength is not as good as one should expect. :/
by Raess
Fri Apr 13, 2018 4:45 am
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Testing to print with PrimaSelect Carbon. A PETG mix with 20% carbon fibers. This Filament is a bit stiffer then the normal PETG. But I am not sure it´s worth the extra bucks compered to PETG. a whopping 95USD/kg VS 35USD/kg This was my first print running almost same settings as the Normal PETG, I ...
by Raess
Wed Apr 11, 2018 11:44 am
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

New AS5048A encoder mount printed. HE-14 header fits great and I installed pull relief for the cables on the back.

IMG_2839.JPG
by Raess
Mon Apr 09, 2018 10:03 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

This week, CNC milling of motor brackets begins. :-) Here are the final brackets and the plan for gearing belt drive.jpeg a quick render on the drive system render.jpeg In the meantime I keep the printer busy with printing pulleys. Sizes printed today is XL 10T, 50T and a 55T. Took a few test prints...
by Raess
Fri Apr 06, 2018 6:30 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Friday fun! Testing the AS5048A encoder with 16384 positions per revolution and with the temporary drive system. Motor brackets are 3D printed and not perfect, therefore some annoying noises! Running VESC FOC Mode @10% Duty. With the rotary position sensor I get a very smooth start and better torque...
by Raess
Wed Mar 28, 2018 11:09 am
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

The appearance grows part by part. The Wheels made a huge difference on the size and the contours of the body.
IMG_2631.jpg
IMG_2632.jpg
IMG_2633.jpg
IMG_2634.jpg
by Raess
Tue Mar 27, 2018 1:04 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

A quick Drive system/wheel assembly.
IMG_2597.jpg


Things are coming together quite nicely.
Here is a small video on the drive system in action with wheel:
https://www.youtube.com/watch?v=tMZNToO2TvU
by Raess
Tue Mar 27, 2018 10:49 am
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Thanks. But still a very long way ahead. :)

The display is driven buy a Nvidia Jetson TX2.
More info here: https://www.nvidia.com/en-us/autonomous ... s-modules/


You can see the display in action here
https://www.youtube.com/watch?v=TBCq1r_XWo4

Cheers
by Raess
Mon Mar 26, 2018 9:43 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Today I received the touchscreen for the robot. Did a quick and dirty prototype of the mouting bracket and printed it. Here is how how it looks mounted on the robot. (Did not have 90-degree HDMI connectors at home, thats why is lifted when powered on). IMG_2572.jpg IMG_2563.jpg Read full post here: ...
by Raess
Sat Mar 24, 2018 9:28 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

3D printed wheels, Drive shaft nav and wheel nav. Everything fits perfect. 8mm Drive shaft in Silver steel, Ultra silent F688ZZ bearings, 8mm clamping ring in alu. Clamping element 8 x 15. The wheel nav is only a quick and dirty concept, need to improve the looks so it follow the same lines as the w...
by Raess
Sat Mar 24, 2018 9:19 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

My printer had no tasks in the pipeline for tonight, So I 3D printed the mounting bracket I designed a couple of days ago. The mount was 3D printed with PrimaSelect PETG, 3 shells and 10% infill. Due to the different surfaces I needed to print with support. The mount came out great and everything fi...
by Raess
Sat Mar 24, 2018 12:43 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Tonight Part 10 was finished, the second wheel for the Valify Robot lawnmower. The print took around 44h and conusmed approximately 550grams of PrimaSelect PETG filament. IMG_2457.JPG I just order a tachometer so I can measure the RPM easier. For low RPM the motors are working quite good. No problem...
by Raess
Thu Mar 22, 2018 7:38 am
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Tested to control the motor with VESC over ROS and Differential drive, ROS controller and keyboard_teleop.
https://www.youtube.com/watch?v=f4ZobjZOBfo

Lets try both motors tonight.

Read full post here: http://valify.se/2018/03/21/differentia ... -ros-vesc/
by Raess
Tue Mar 20, 2018 3:52 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Jetson TX2 mount and SSD mount 3D printed.
IMG_2410.jpg
by Raess
Tue Mar 20, 2018 3:50 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

by Raess
Mon Mar 19, 2018 5:07 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Approximately 700mm ;-)
by Raess
Mon Mar 19, 2018 1:58 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 60
Views: 2225

Re: Project robot lawnmower

Today I received the new BLDC motors & the VESC controllers for the Valify robot lawnmower. Here is some pictures from test mounting on the prototype motor brackets: IMG_2373.jpg IMG_2379.jpg IMG_2376.jpg Also continued with CNC milling of parts for the Drive system: Resized_20180319_141948.jpeg...

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