GroundskeeperWillie

Great! To me it's all about exploring the design space so the more the merrier Yeah that's definitely a concern. If it's too slow it won't be fun to watch

Here's my mockup pump and regulator used for testing. Hmm, I just read the rules again, and it does seem that regarding "photos of build in progress" i misread "e.g." instead of "i.e." So Jurrs may be right. I'm gonna ask Jim.

Well, I didn't just reserve the idea, I started to discuss the design which for this kind of thing certainly is "showing progress" if that's what you mean. By all means, go ahead and make your version as well. Yes, the "controller" will definitely contain a number of valves, and possibly internal cylinders. The question I'm getting at, is whether to build a generic state machine or a minimal state machine optimized for the problem at hand. This requires a lot of tinkering to answer, it seems.

My TC-10 entry will be a Useless Box or Useless Machine. The sole purpose of such a contraption is to expose an ON/OFF switch, and whenever it is turned on, it mechanically pushes the switch to turn itself back off. There are various LEGO incantations, most notably an , but no pneumatic versions I could find.I'm thinking a simple mechanical design with two pneumatic cylinders and a switch. The bottom cylinder slides a compartment up through the roof of the box. The compartment contains the second cylinder, which can then push the switch back to its OFF position. Something like this: The mechanics are very simple but not so with controlling the cylinders. I have yet to come up with a working design, but here the things I've worked on so far. Basically the controller is a state machine. With a switch and two cylinders that makes 8 possible states, where 4-6 of them are relevant, depending of the implementation (like whether the switch is a pneumatic value or some mechanical input) Functionally, the states are: 1. Switch ON 2. Bottom cylinder extracts 3. Top cylinder extracts 4. Switch OFF 5. Top cylinder retracts 6. Bottom cylinder retracts States 3 and 4 may coincide as the cylinder pushes the switch and 1 and 6 may also coincide. My next few posts will discuss the designs I've tried (and failed) so far. Seems this project will be a risky - and learning one

This is really a great idea and execution as well

As an LDD newbie, how would you go about building Effermans version? I had a look at the generated building guide in LDD and it doesn't seem like you could actually build the model in that order. Any hints? Also, did anybody generate a parts list besides the parts of just the 42054? On a different note, here are a couple of shots of the 42054 next to my RC MOC from last year. It obviously doesn't stand up, but it could be a lot worse

Thanks for a great review! Having just built the thing, I can pretty much agree to everything in the review: Looks great, good feeling of progression in the build, lots of new and interesting techniques, well designed and working features and so on. Playability-wise, I think TLG has made good choices and compromises here. Sure, it's possible to add and even motorize more features but simplicity is an important goal here. I was just playing with the crane a bit, and the mere fact that the motor and thus PTO and crane can be so easily switched on and off makes it the experience a good one. This is important to any PTO driven implement you might dream up. One thing that one may find disappointing is the lack of front pendular suspension. Will be interesting to see whether somebody succeeds modding that into the stock steering system.

Just ordered mine today. Danish store Bilka has 35% discount on all LEGO this week

Great job, looks good! Steering is done with two servos, right?

Congratulations guys! But now it's such a long wait until november

Potato harvesters are cool and we don't see them around here much. I have considered such a contraption as well. And the connection to the BWE is very funny

This similar image of the BWE says "Exclusive Legoland® Launch"

I'd like to see the details of the back when the crane is detached. 3 point hitch? PTO? Motorized?. These details are important if we are to make our own implements.

That was an awesome set. I remember building it from photocopied instructions from my cousin. I never thought that the somewhat loose tracks was a problem. At least not compared to the complete lack of bracing of central parts like this But a great set nonetheless.

Wow, I never considered that a bushing could be used like that. Pretty sure that's not legal usage but cool nonetheless

Well done. We don't often see old cabin-less models as MOCs so I appreciate it. The gear shifting mechanism looks unconventional but clean and effective.

I've decided to back this. I really hope for bluetooth game controller support to enable phoneless operation.

I love the reckless motion of the head combined with the rhythmic broom motion. I'm sure this is somewhat accidental, but of course, these kinds of happy accidents happen when you seek them out

That's a lovely machine. Looks very authentic. Great work!

Just discovered this kickstarter project in my facebook feed - another bluetooth Lego PF? compatible system with motors, sensors, buttons and such. https://www.kickstar...tricity-and-iot Lots of options these days... Edit: Turns out its may not be PF compatible anyway. It looks like you could connect PF motors but they don't actually say it. Too bad if that's the case cause those motors really look like a neat replacement for the micro motors.

Looking good Would be nice with a few more pics and a video.

Great reverse engineering job Barman! It was a pleasure building this little thing. Maybe you should put it on Ideas as a model - my 3 year old loves it.

This post from 2011 presents a Xerion Saddle Trac with differential-based crab steering. But I doubt that's the technique used in the 42054. This video shows how it works:

I bet we'll be seeing quite a few of those as MOCs once the Xerion hits the shelves

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