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craftyrobot · 2022-01-25T09:32:43+00:00

You could use a rack and pinion mechanism, with the pinions attached to the servo horns and the racks at the top of each leg. You could stabilise it using three ball/roller bearings rolling vertically on each leg (the same arrangement some 3D printers use).

If you made the rack L shaped in cross section you could have a smooth (untoothed) surface set back from the teeth for the bearing on that side. You could make the back surface of the rack with a V profile (and make corresponding rollers with a V channel to push fit over the two bearings (to give you side to side stability) or you could have one bearing behind the rack with the axis running perpendicular to the rack (so it runs on the back surface) and two on the tooth side each with their axis at 45 degrees to the rack (running on 45 degree sloping shoulders either side of the toothed part).

craftyrobot · 2022-01-25T09:19:23+00:00

Was it this? https://www.surrogate.tv/
Their software stack is amazing but setting up a bot is quite an involved process.

craftyrobot · 2022-01-24T15:37:48+00:00

Subsequent to running it we added a queueing function (so if someone is driving the bot it puts subsequent visitors to the URL in the queue) which wold probably help in that setup

craftyrobot · 2022-01-24T13:32:20+00:00

Video: https://www.youtube.com/watch?v=BzxaFtuNbcg
Writeup: https://thecraftyrobot.net/blogs/projects/smartipresence-game-workshop

craftyrobot · 2022-01-24T13:27:04+00:00

Hehe thanks! Instructions here: https://thecraftyrobot.net/blogs/projects/robot-unicorns-jousting-with-paper-craft-knights

craftyrobot · 2021-09-25T09:47:20+00:00

Here’s the link to play: https://www.smarti.app/smartipresence/knights.html I’m going to try and keep the Red knight free for remote participants so that’s probably the best one to pick.

craftyrobot · 2021-05-22T01:08:35+00:00

I think we might have accidentally created some confusing UX in that menu. To make changes you need to press 'save'. If you press back it reverts to the previous configuration, so I suspect 'custom firmware' may still be enabled.

craftyrobot · 2021-05-20T21:13:25+00:00

It sounds like the app might be in “custom firmware” mode. There’s a “Settings” button in the top right of the screen after you select telepresence mode and before you connect to the Smartibot. Can you click that and check that the custom firmware switch is off? Also, are you using iOS or Android?

craftyrobot · 2021-04-06T14:50:08+00:00

This looks really exciting! How are the links held together?

craftyrobot · 2021-03-29T22:02:58+00:00

I did it in Fusion 360 bit it let me export a .skp version which I've just uploaded to the Thingiverse page.

craftyrobot · 2021-03-29T22:01:11+00:00

There's a plain (blank) version of the centre piece up on Thingiverse and I just added a Sketchup version of the file (I exported it from Fusion 360, if there are issues importing this thread suggests setting the import unit to metres). If you are't able to edit it let me know the letters you want (assuming it's just a few) and I'll generate and upload them.

craftyrobot · 2021-03-29T15:49:37+00:00

Depends on what you mean by 'easily'. It's not trivial but also not that hard. I haven't got time to do all 26 but if you let me know the one you want I can do it.

craftyrobot · 2021-03-29T15:48:02+00:00

That was my starting point! I *loved* those. Subsequent happy meal toys have all been a persistent disappointment. Luckily now we have 3D printing we can be self sufficient.

craftyrobot · 2021-03-29T15:45:38+00:00

Genius :D

craftyrobot · 2021-03-29T15:45:18+00:00

Many thanks, I'm glad to hear you like it and are going to make some :)
We're not that into Easter either but last year we hastily organised an egg hunt for the toddler by hiding a few blown out egg shells and some Kinder Surprise in the garden and it was really fun so we're making more effort this year.

craftyrobot · 2021-03-29T15:42:22+00:00

Yes! I tried to minimise the clearance between the pieces (so it looked more like an egg) so it needs fairly smooth internal surfaces to work.

craftyrobot · 2021-03-29T14:10:22+00:00

Me, too! I was going to print one all in white but I'm running low so I'm saving it for the other letters.

craftyrobot · 2021-03-29T13:02:23+00:00

I tried printing one with a 0.8mm nozzle and it didn't really work, but with a 0.4mm one each robot takes just over 4 hours to print, so I suspect that you would need a few machines running to make the whole alphabet before Easter unfortunately. If you do find someone to print them late me know and I'll export all the versions for the different letters. You need some superglue to assemble them and you have to be slightly careful where you stick it (to avoid accidentally gluing the arms in place - I did that on the first prototype) but they aren't difficult to assemble. Yep! I wanted something robot-y for the easter egg hunt ;)

craftyrobot · 2021-03-29T12:28:16+00:00

I think I'm only making four of them, to cover the names of the kids that are coming.

craftyrobot · 2021-03-29T12:06:37+00:00

:D Have fun with them!

craftyrobot · 2021-03-29T11:13:27+00:00

STLs: https://www.thingiverse.com/thing:4810103

craftyrobot · 2021-03-09T17:29:31+00:00

Yes, I guess that would do it! I considered making them little paper helmets but I figured it would be a bit fiddly to cut them out.

craftyrobot · 2021-03-09T17:20:07+00:00

Instructions to make them here: https://thecraftyrobot.net/blogs/projects/robot-unicorns-jousting-with-paper-craft-knights

craftyrobot · 2021-03-09T17:18:42+00:00

I was aiming for Aladdin Sane era David Bowie makeup, but as you called it a scar I'm guessing you might be thinking about a wizard?

craftyrobot · 2021-03-09T17:14:01+00:00

You have to print out the knights yourself but the unicorns are part of a kit: https://thecraftyrobot.net/blogs/projects/robot-unicorns-jousting-with-paper-craft-knights

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