Search found 150 matches

by Raess
Mon Apr 30, 2018 7:54 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

Maybe around 7-8kg :)

Project update:
Drive system assembly test. Everything fits perfectly. Some welding left and we are good to go
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by Raess
Fri Apr 27, 2018 6:24 am
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

Left wheel arch part 1/2 completed late last night!
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Test assembly. The covers fits nicely! Not so many parts left to print! I need to order more filament!
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by Raess
Thu Apr 26, 2018 7:11 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

So today the rear wheel arch part 2 finished. 37 hours print that consumed around 450grams filament. I have to say that I was a bit nervous when printing this. 5mm thickness and around 250mm heigh, not much bed surface, but the raise managed to print it with success! 52EBB69D-4F2F-4486-880A-52E521FB...
by Raess
Thu Apr 26, 2018 7:08 am
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

I just uploaded a behind the scene step by step modeling Autodesk Fusion360 video on YouTube. See the birth of the robot from scratch.

https://youtu.be/TroIcguRpW0
by Raess
Wed Apr 25, 2018 7:00 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

olala, Today all parts for the drive system is completed.
Some parts will be welded together and then the assembly will begin next week!
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by Raess
Tue Apr 24, 2018 7:04 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

Timber Haint wrote:Another suggestion would be to also use a raft. I always error on the side of a raft if I think the print will come off due to bed adhesion issues and they come out great.


I have tried rafts and they usually create more problems rather then helping me :)
by Raess
Tue Apr 24, 2018 7:03 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

Here is some pictures printing part 1/2 of the wheel arch. Sometimes the support structures fails to stick enough to the bed and to save the print and a bunch of filament, duck tape saves the day :-) IMG_3057.jpg Have you tried Solid Base Layers under the Support settings? It creates a sturdy base ...
by Raess
Tue Apr 24, 2018 7:39 am
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

Here is some pictures printing part 1/2 of the wheel arch. IMG_3054.jpg Sometimes the support structures fails to stick enough to the bed and to save the print and a bunch of filament, duck tape saves the day :-) IMG_3057.jpg This part had very little bed surface, but it managed to stick to bed and ...
by Raess
Tue Apr 24, 2018 7:19 am
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

Update to the build: First big body cover printed. The part came out great. Running PrimaSelect PETG Solidwhite at 240C. This print was printed with 0.6mm nozzle instead of the original 0.4mm. layers looks nice and even! This part was printed at 2 shells at 10% infill and print time landed on around...
by Raess
Sat Apr 21, 2018 5:07 am
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

So yesterday, CNC milling of motor brackets was started.
The inside contour was finished. The outside contour is left. :-)
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by Raess
Thu Apr 19, 2018 7:30 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

Re: Project robot lawnmower

Today I finished with the design of the new nose. new design nose.png Before printing the new nose I decided to print only the housing for the ZR300 camera. The partly printed part came out great. The main modification from the original housing is that the housing is made deeper so the PCB can be mo...
by Raess
Tue Apr 17, 2018 7:50 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

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: 78
Views: 19438

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: 78
Views: 19438

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: 78
Views: 19438

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: 78
Views: 19438

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: 78
Views: 19438

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.

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by Raess
Mon Apr 09, 2018 10:03 pm
Forum: Others
Topic: Project robot lawnmower
Replies: 78
Views: 19438

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: 78
Views: 19438

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: 78
Views: 19438

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.
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